Re: [PATCH -next] soc: ixp4xx: qmgr: Use DEFINE_SPINLOCK() for spinlock

2021-03-31 Thread Krzysztof Hałasa
_lock); > > dev_info(dev, "IXP4xx Queue Manager initialized.\n"); > return 0; -- Krzysztof Hałasa Sieć Badawcza Łukasiewicz Przemysłowy Instytut Automatyki i Pomiarów PIAP Al. Jerozolimskie 202, 02-486 Warszawa

Re: RFC: MEDIA: Driver for ON Semi AR0521 camera sensor

2021-03-30 Thread Krzysztof Hałasa
nts on the pixel clock as well (the active scanning must be as fast as possible, which means fast pixel clock, minimum possible hblank and thus long vblank). All comments are appreciated. -- Krzysztof Hałasa Sieć Badawcza Łukasiewicz Przemysłowy Instytut Automatyki i Pomiarów PIAP Al. Jerozolimskie 202, 02-486 Warszawa

Re: RFC: dt-binding: media: document ON Semi AR0521 sensor bindings

2021-03-30 Thread Krzysztof Hałasa
ny of the regexes: 'pinctrl-[0-9]+' From schema: /usr/src/linux/imx6/Documentation/devicetree/bindings/media/i2c/onnn,ar0521.yaml Thus I'm currently leaving it as is. -- Krzysztof Hałasa Sieć Badawcza Łukasiewicz Przemysłowy Instytut Automatyki i Pomiarów PIAP Al. Jerozolimskie 202, 02-486 Warszawa

Re: RFC: MEDIA: Driver for ON Semi AR0521 camera sensor

2021-03-16 Thread Krzysztof Hałasa
gulators when starting streaming ? > > I forgot to mention in the review of the DT bindings that regulators > should be specified in DT. Why? The hw using this driver doesn't have capability to disable regulators. If someone produces hw with means to control power, the sw support can be trivially added. When I last checked, we didn't add driver code for functionality for which no hw support exists, did we? -- Krzysztof Hałasa Sieć Badawcza Łukasiewicz Przemysłowy Instytut Automatyki i Pomiarów PIAP Al. Jerozolimskie 202, 02-486 Warszawa

Re: RFC: dt-binding: media: document ON Semi AR0521 sensor bindings

2021-03-16 Thread Krzysztof Hałasa
Laurent, Laurent Pinchart writes: >> +const: on-semi,ar0521 > > That's not the correct prefix for ON Semiconductor. See > Documentation/devicetree/bindings/vendor-prefixes.yaml. Or just the name > of this file :-) Right, just missed this one. Thanks for the comments. -- Krzysztof Halasa S

RFC: MEDIA: Driver for ON Semi AR0521 camera sensor

2021-03-16 Thread Krzysztof Hałasa
Is there a reliable way to include national unicode characters in the kernel sources? For review only. This will be signed off when (if) the driver is accepted. diff --git a/MAINTAINERS b/MAINTAINERS index bfc1b86e3e73..20514c00909b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1294,6 +1294,12 @

RFC: dt-binding: media: document ON Semi AR0521 sensor bindings

2021-03-16 Thread Krzysztof Hałasa
This file documents DT bindings for the AR0521 camera sensor driver. Signed-off-by: Krzysztof Halasa diff --git a/Documentation/devicetree/bindings/media/i2c/onnn,ar0521.yaml b/Documentation/devicetree/bindings/media/i2c/onnn,ar0521.yaml new file mode 100644 index ..f649d4cbcb37 ---

Re: [v2] Old platforms: bring out your dead

2021-01-13 Thread Krzysztof Hałasa
Arnd, Arnd Bergmann writes: > For these I received no reply yet. Again, these will stay for the moment > unless I get a reply, but if anyone has more information, please reply > here to document the status (adding a few more people to Cc): > > * cns3xxx -- added in 2010, last fixed in 2019, prob

Re: [PATCH net v2] drivers/net/wan/hdlc_fr: Add needed_headroom for PVC devices

2020-09-13 Thread Krzysztof Hałasa
Xie He writes: > The HDLC device is not actually prepending any header when it is used > with this driver. When the PVC device has prepended its header and > handed over the skb to the HDLC device, the HDLC device just hands it > over to the hardware driver for transmission without prepending any

Re: [PATCH net] drivers/net/wan/hdlc_cisco: Add hard_header_len

2020-08-28 Thread Krzysztof Hałasa
Hello Xie, Xie He writes: > This driver didn't set hard_header_len. This patch sets hard_header_len > for it according to its header_ops->create function. BTW it's 4 bytes long: struct hdlc_header { u8 address; u8 control; __be16 protocol; }__packed; OTOH hdlc_setup_de

[PATCH] 802.11n IBSS: wlan0 stops receiving packets due to aggregation after sender reboot

2019-10-21 Thread Krzysztof Hałasa
rcu_read_unlock(); goto end; -- Krzysztof Hałasa ŁUKASIEWICZ Research Network Industrial Research Institute for Automation and Measurements PIAP Al. Jerozolimskie 202, 02-486 Warsaw, Poland

802.11n IBSS: wlan0 stops receiving packets due to aggregation after sender reboot

2019-10-21 Thread Krzysztof Hałasa
KERN_DEBUG "SEQ BAD: %u vs %u\n", mpdu_seq_num, head_seq_num); dev_kfree_skb(skb); goto out; - } + } else + printk(KERN_DEBUG "SEQ OK: %u vs %u\n", mpdu_seq_num, head_seq_num); /* * If frame the sequence number exceed

[PATCH] 802.11n IBSS: wlan0 stops receiving packets due to aggregation after sender reboot

2019-10-21 Thread Krzysztof Hałasa
tid_rx->head_seq_num = start_seq_num; status = WLAN_STATUS_SUCCESS; - else + } else status = WLAN_STATUS_REQUEST_DECLINED; rcu_read_unlock();

Re: [PATCH] arch: arm: Kconfig: pedantic formatting

2019-03-14 Thread Krzysztof Hałasa
"Enrico Weigelt, metux IT consult" writes: > Formatting of Kconfig files doesn't look so pretty, so let the > Great White Handkerchief come around and clean it up. > > Signed-off-by: Enrico Weigelt, metux IT consult > --- > arch/arm/mach-ixp4xx/Kconfig | 32 ++--- Acked

[PATCH] ARM i.MX: Fix a kernel panic in i2c_imx_clk_notifier_call().

2018-12-17 Thread Krzysztof Hałasa
90ad2cbe88c22d0215225ab9594eeead0eb24fde changed the i.MX I2C bus driver to use a notifier whenever the base clock ("ipg" - 66 MHz peripheral clock) rate changes. Unfortunately one can't use the container_of() macro this way - the first argument has to point to a member of the bigger struct (last

Re: [PATCH] ARM i.MX: Fix a kernel panic in i2c_imx_clk_notifier_call().

2018-12-03 Thread Krzysztof Hałasa
Hi Fabio, Fabio Estevam writes: > Please provide a commit log, giving some context to your fix. Well, I hope Lucas could add something here. I am uncertain how it was supposed to work, the ndata->clk (the pointer, not the clk pointed by it) can't be at the same time a member of imx_i2c_struct,

[PATCH] ARM i.MX: Fix a kernel panic in i2c_imx_clk_notifier_call().

2018-12-03 Thread Krzysztof Hałasa
Signed-off-by: Krzysztof Halasa --- a/drivers/i2c/busses/i2c-imx.c +++ b/drivers/i2c/busses/i2c-imx.c @@ -510,9 +510,9 @@ static int i2c_imx_clk_notifier_call(struct notifier_block *nb, unsigned long action, void *data) { struct clk_notifier_data *nd

Re: [PATCH 2/2] ARM: ixp4xx: include linux/mtd/platnand.h

2018-10-01 Thread Krzysztof Hałasa
Arnd Bergmann writes: > The platform_nand_data structure definition is required for ixdp425 > but has now moved to a new header file: > > arch/arm/mach-ixp4xx/ixdp425-setup.c:98:15: error: variable > 'ixdp425_flash_nand_data' has initializer but incomplete type > static struct platform_nand_dat

Re: [PATCH 01/12] ARM: ixp4xx: fix ioport_unmap definition

2017-07-21 Thread Krzysztof Hałasa
Arnd Bergmann writes: > An empty macro definition can cause unexpected behavior, in > case of the ixp4xx ioport_unmap, we get two warnings: > > drivers/net/wireless/marvell/libertas/if_cs.c: In function 'if_cs_release': > drivers/net/wireless/marvell/libertas/if_cs.c:826:3: error: suggest braces

Re: [PATCH] ARM: remove duplicate 'const' annotations'

2017-05-11 Thread Krzysztof Hałasa
ot;, > &cns3xxx_usb_ehci_pdata }, > { "intel,usb-ohci", CNS3XXX_USB_OHCI_BASE, "ohci-platform", > &cns3xxx_usb_ohci_pdata }, > { "cavium,cns3420-ahci", CNS3XXX_SATA2_BASE, "ahci", NULL }, Acked-by: Krzysztof Hałasa -- Krzysztof Halasa Industrial Research Institute for Automation and Measurements PIAP Al. Jerozolimskie 202, 02-486 Warsaw, Poland

Re: [i.MX6 DRM IPUv3] Regression 4.9-rc5: greenish screen with YUV420 video

2016-12-02 Thread Krzysztof Hałasa
Philipp Zabel writes: > I had already (accidentally) fixed this with 3fd8b292ae6b ("drm/imx: > ipuv3-plane: merge ipu_plane_atomic_set_base into atomic_update"). Thanks, I've merged your pza/imx-drm/next and it now works. -- Krzysztof Halasa Industrial Research Institute for Automation and Mea

Re: [PATCH 4.9.0-rc5] AR9300 calibration problems with antenna selected

2016-11-21 Thread Krzysztof Hałasa
miaoq...@codeaurora.org writes: >> rmmod ath9k >> modprobe ath9k >> iw dev wlan0 set type ibss >> iw phy phyX set antenna 2 > > 2 is a bad mask. We use bitmap, the valid masks are 1, 3, 7. Thanks for your response. I have two antenna connections (and a single antenna). Is it possible to select t

Re: [PATCH 01/15] net: phy: Add phy_ethtool_nway_reset

2016-11-17 Thread Krzysztof Hałasa
Hi, Florian Fainelli writes: > This function just calls into genphy_restart_aneg() to perform an > autonegotation restart. > > +int phy_ethtool_nway_reset(struct net_device *ndev) > +{ > + struct phy_device *phydev = ndev->phydev; > + > + if (!phydev) > + return -ENODEV; > +

[i.MX6 DRM IPUv3] Regression 4.9-rc5: greenish screen with YUV420 video

2016-11-17 Thread Krzysztof Hałasa
Hi, The following GStreamer pipeline causes screen to become green with v4.9-rc4+: gst-launch-1.0 udpsrc uri=udp://239.1.2.2:5100 reuse=true caps="application/x-rtp,media=(string)video,clock-rate=(int)9,encoding-name=(string)H264" ! rtph264depay ! h264parse ! v4l2video1dec capture-io-mode=d

[PATCH 4.9.0-rc5] AR9300 calibration problems with antenna selected

2016-11-15 Thread Krzysztof Hałasa
Hi, I recently tried to select a single antenna on AR9300 and it works for 30 seconds only. The subsequent calibration makes the RX signal level to drop from the usual -30/-40 dBm to -70/-80 dBm, and the transmission practically stops. With the attached patch it works, though selecting the antenn

Super Top USB SD card reader resets and corruption - XHCI

2016-10-31 Thread Krzysztof Hałasa
Hi, I came across a problem with an USB SD card reader apparently causing USB resets and corrupting data on the card. The reader in question is a very cheap: 14cd:1212 Super Top microSD card reader (SY-T18) The card is an old SDHC, 32 GB, Sandisk brand. The problems don't seem to exist now if I

Re: [PATCH v2] media: solo6x10: fix lockup by avoiding delayed register write

2016-10-23 Thread Krzysztof Hałasa
Andrey Utkin writes: > --- a/drivers/media/pci/solo6x10/solo6x10.h > +++ b/drivers/media/pci/solo6x10/solo6x10.h > @@ -284,7 +284,10 @@ static inline u32 solo_reg_read(struct solo_dev > *solo_dev, int reg) > static inline void solo_reg_write(struct solo_dev *solo_dev, int reg, >

Re: [PATCH net-next 3/6] net: use core MTU range checking in WAN drivers

2016-10-21 Thread Krzysztof Hałasa
Jarod Wilson writes: > - set min/max_mtu in all hdlc drivers, remove hdlc_change_mtu > - sent max_mtu in lec driver, remove lec_change_mtu > drivers/net/wan/c101.c| 1 - > drivers/net/wan/hdlc.c| 11 ++- > drivers/net/wan/hdlc_fr.c | 3 ++- > drivers/ne

Re: solo6010 modprobe lockup since e1ceb25a (v4.3 regression)

2016-09-27 Thread Krzysztof Hałasa
Andrey Utkin writes: > Lockup happens only on 6010. In provided log you can see that 6110 > passes just fine right before 6010. Also if 6010 PCI ID is removed from > solo6x10 driver's devices list, the freeze doesn't happen. Probably explains why I don't see lockups :-) I will have a look. --

Re: solo6010 modprobe lockup since e1ceb25a (v4.3 regression)

2016-09-27 Thread Krzysztof Hałasa
Andrey Utkin writes: >> Can you share some details about the machine you are experiencing the >> problems on? CPU, chipset? I'd try to see if I can recreate the problem. > > See solo.txt.gz attached. Thanks. I can see you have quite a set of video devices there. I will see what I can do with thi

Re: solo6010 modprobe lockup since e1ceb25a (v4.3 regression)

2016-09-26 Thread Krzysztof Hałasa
Andrey Utkin writes: >> Does (only) adding the >> >> pci_read_config_word(solo_dev->pdev, PCI_STATUS, &val); >> >> in solo_reg_write() help? > > Yes. > I have posted a patch with this change few days ago, I thought you have > noticed it. Well, I think you haven't sent me a copy. Anyway, i

Re: solo6010 modprobe lockup since e1ceb25a (v4.3 regression)

2016-09-25 Thread Krzysztof Hałasa
Andrey Utkin writes: > On Thu, Sep 22, 2016 at 10:51:37AM +0200, Krzysztof Hałasa wrote: >> I wonder if the following fixes the problem (completely untested). > > I have given this a run, and it still hangs. Does (only) adding the pci_read_config_word(solo_dev->pdev

Re: solo6010 modprobe lockup since e1ceb25a (v4.3 regression)

2016-09-22 Thread Krzysztof Hałasa
Andrey Utkin writes: > It happens in solo_disp_init at uploading default motion thresholds > array. > > I've got a prints trace with solo6010-fix-lockup branch > https://github.com/bluecherrydvr/linux/tree/solo6010-fix-lockup/drivers/media/pci/solo6x10 > the trace itself in jpg: > https://decent.

Re: solo6010 modprobe lockup since e1ceb25a (v4.3 regression)

2016-09-21 Thread Krzysztof Hałasa
Hans Verkuil writes: > That was probably the reason for the pci_read_config_word in the reg_write > code. Try putting that back (and just that). Yes. I guess a single pci_read_config_word() would suffice. Though it would obviously be much better to identify the place in the driver which needs t

Re: Aw: BUG: Wrong dma queue handling in ixp4 driver

2016-07-22 Thread Krzysztof Hałasa
Hi Lino, "Lino Sanfilippo" writes: >> maybe I miss something, but the ixp4 ethernet driver seems to handle dma >> pools >> in a wrong way: In init_queues() it creates a dma pool for descriptors and >> then >> only allocates a single descriptor from this pool. The author seems to >> assume t

Re: [PATCH] [media] tw686x-kh: Delete an unnecessary check before the function call "video_unregister_device"

2016-07-22 Thread Krzysztof Hałasa
SF Markus Elfring writes: > The video_unregister_device() function tests whether its argument is NULL > and then returns immediately. Thus the test around the call is not needed. > > This issue was detected by using the Coccinelle software. > > Signed-off-by: Markus Elfring > --- > drivers/stag

Re: [PATCH] Revert "ARM: cns3xxx: pci: avoid potential stack overflow"

2016-06-15 Thread Krzysztof Hałasa
Arnd Bergmann writes: > I'd start by copying the relevant nodes from > arch/arm/boot/dts/arm-realview-pb11mp.dts, which is the closest > I can think of. I've put together something completely untested > below. Thanks. I will try to handle that. 3+ weeks, unfortunately. Now, what do we do with t

Re: [PATCH] Revert "ARM: cns3xxx: pci: avoid potential stack overflow"

2016-06-10 Thread Krzysztof Hałasa
Arnd Bergmann writes: > Before that, we were always setting both mrrs and mps. As we don't know > who uses PCIE_BUS_PEER2PEER, maybe another option would be to add yet > another pcie_bus_config value for this particular quirk? It would be a safe approach. Or, maybe another non-pcie_bus_config th

Re: [PATCH] Revert "ARM: cns3xxx: pci: avoid potential stack overflow"

2016-06-08 Thread Krzysztof Hałasa
Payload Size set to 128/ 128 (was 128), Max Read Rq 128 Signed-off-by: Krzysztof Hałasa Fixes: 498a92d42596 ("ARM: cns3xxx: pci: avoid potential stack overflow") diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 6d7ab9b..91713b6 100644 --- a/drivers/pci/probe.c +++ b/driv

Re: [PATCH] Revert "ARM: cns3xxx: pci: avoid potential stack overflow"

2016-06-01 Thread Krzysztof Hałasa
: Arnd Bergmann > CC: Krzysztof Hałasa > --- > arch/arm/mach-cns3xxx/pcie.c | 71 > -- > 1 file changed, 41 insertions(+), 30 deletions(-) This, applied to v4.7-rc1, fixes the problem on my Laguna boards. Tested-by: Krzysztof Hałasa And

Re: [PATCH REPOST] Extend PCIE_BUS_PEER2PEER to set MRSS=128 to fix CNS3xxx BM DMA.

2016-05-04 Thread Krzysztof Hałasa
Bjorn Helgaas writes: > It looks like 498a92d42596 merely fixed a warning, at the expense of > breaking DMA on Cavium. Reverting it would bring the warning back, but > that's better than broken DMA. Perhaps we should change PCIE_BUS_PEER2PEER to also write MRRS anyway. I realize the CNS3xxx pa

Re: [PATCH 4/4] ARM: remove duplicate const qualifier

2016-04-26 Thread Krzysztof Hałasa
Eric Engestrom writes: > I can't confirm it (haven't tried), and don't care enough to do it :] > I guess I'm just dropping the patch then. Like I said, it can't hurt to > leave them in. Actually it may hurt (a little bit) - it makes the code less readable. -- Krzysztof Halasa Industrial Resear

Re: [PATCH] i.MX6 PCIe: Fix imx6_pcie_deassert_core_reset() polarity

2016-04-04 Thread Krzysztof Hałasa
Tim, > So perhaps there is something else going on with the tw8689 > device/driver that is causing it to not work with MSI. We have an > avc8000 miniPCIe with tw8689 here and can test if you send me your > patches that enable tw8689 with msi. I think you can use this: http://git.linuxtv.org/hverk

Re: [PATCH] i.MX6 PCIe: Fix imx6_pcie_deassert_core_reset() polarity

2016-03-30 Thread Krzysztof Hałasa
Lucas Stach writes: >> TW6869: PCI :04:00.0, IRQ 336, MMIO 0x110 >> TW686x :04:00.0: enabling device (0140 -> 0142) >> > I don't see whee the device even tries to use MSI IRQs. Even if the > infrastructure is enabled it opts to use legacy INTA. It only tries to use normal IRQ. > The

Re: [PATCH] i.MX6 PCIe: Fix imx6_pcie_deassert_core_reset() polarity

2016-03-29 Thread Krzysztof Hałasa
Lucas Stach writes: > Is this working with v4.4 and PCI_MSI enabled? I'm sure I've tested MSI > IRQs before enabling them in the defconfig and they have been working > for me for a long time before that. Tested with i210 on Gateworks > Ventana. MSI never worked for me on Ventana. I have been usi

Re: [PATCH] i.MX6 PCIe: Fix imx6_pcie_deassert_core_reset() polarity

2016-03-28 Thread Krzysztof Hałasa
> OTOH, we should fix it some day, making sure the DTS files are fixed > first: > > imx6qdl-apf6dev.dtsi: reset-gpio = <&gpio6 2 GPIO_ACTIVE_HIGH>; > imx6qdl-aristainetos2.dtsi: reset-gpio = <&gpio2 16 GPIO_ACTIVE_HIGH>; > imx6qdl-hummingboard.dtsi: reset-gpio = <&gpio3 4 0>; (I think RMK al

Re: [PATCH] i.MX6 PCIe: Fix imx6_pcie_deassert_core_reset() polarity

2016-03-28 Thread Krzysztof Hałasa
Fabio Estevam writes: > In order to keep old dtb's working we should simply ignore the GPIO > flags passed in the 'reset-gpio' property. > > That's why we need a revert. Just sent a v2, BTW. OTOH, we should fix it some day, making sure the DTS files are fixed first: imx6qdl-apf6dev.dtsi:

Re: [PATCH] i.MX6 PCIe: Fix imx6_pcie_deassert_core_reset() polarity

2016-03-28 Thread Krzysztof Hałasa
Tim Harvey writes: > It's not too easy to tell how many IMX6 boards incorrectly specify > their reset-gpio polarity. I don't know what the best way to determine > what boards use the IMX6 pcie host controller. Is there a dtc usage > that will display the compiled dtb's then we grep out 'compatibl

Re: [PATCH] i.MX6 PCIe: Fix imx6_pcie_deassert_core_reset() polarity

2016-03-28 Thread Krzysztof Hałasa
Tim Harvey writes: > ok - I'll respond there as I agree with the patch but not the wording > of the commit (It's Gateworks 'Ventana' using IMX6 not Laguna and we > do define the polarity properly as active-low in Ventana dt's). Right, it's Ventana of course (I had been working with Laguna boards

[PATCH] i.MX6 PCIe: Fix imx6_pcie_deassert_core_reset() polarity

2016-03-25 Thread Krzysztof Hałasa
0x0100, using [bus 00-ff] IO 0x01f8..0x01f8 -> 0x MEM 0x0100..0x01efffff -> 0x01000000 imx6q-pcie 1ffc000.pcie: phy link never came up Signed-off-by: Krzysztof Hałasa diff --git a/drivers/pci/host/pci-imx6.c b/drivers/pci/host/pci-imx6.c index fe60096..f17fb02 100644

Re: [PATCH] Fix NULL ptr dereference in pci_bus_assign_domain_nr() on ARM

2016-03-07 Thread Krzysztof Hałasa
Bjorn Helgaas writes: >> At least CNS3xxx doesn't boot. I haven't verified a couple of others, >> but they may be broken as well. > > Good, thanks. Also (I should have asked this before), please include a > "Fixes:" line so we know exactly when this broke and what stable kernels > need the fix.

Re: [PATCH] Fix NULL ptr dereference in pci_bus_assign_domain_nr() on ARM

2016-03-03 Thread Krzysztof Hałasa
Hi Bjorn, Bjorn Helgaas writes: > On Tue, Mar 01, 2016 at 07:07:18AM +0100, Krzysztof Hałasa wrote: >> Many ARM platforms use a wrapper: >> /* >> * Compatibility wrapper for older platforms that do not care about >> * passing the parent device. >> */ >

[PATCH] CNS3xxx: remove unused *_VIRT definitions

2016-02-29 Thread Krzysztof Hałasa
Signed-off-by: Krzysztof Hałasa diff --git a/arch/arm/mach-cns3xxx/cns3xxx.h b/arch/arm/mach-cns3xxx/cns3xxx.h index a0f5b60..a642ba5 100644 --- a/arch/arm/mach-cns3xxx/cns3xxx.h +++ b/arch/arm/mach-cns3xxx/cns3xxx.h @@ -162,13 +162,11 @@ #define CNS3XXX_L2C_BASE

[PATCH] CNS3xxx: remove unused *_VIRT definitions

2016-02-29 Thread Krzysztof Hałasa
diff --git a/arch/arm/mach-cns3xxx/cns3xxx.h b/arch/arm/mach-cns3xxx/cns3xxx.h index a0f5b60..a642ba5 100644 --- a/arch/arm/mach-cns3xxx/cns3xxx.h +++ b/arch/arm/mach-cns3xxx/cns3xxx.h @@ -162,13 +162,11 @@ #define CNS3XXX_L2C_BASE 0x9200 /* L2 Cache Control */ #

[PATCH] Fix NULL ptr dereference in pci_bus_assign_domain_nr() on ARM

2016-02-29 Thread Krzysztof Hałasa
without a parent. This patch fixes the NULL pointer dereference. Signed-off-by: Krzysztof Hałasa Cc: sta...@vger.kernel.org diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 602eb42..f89db3a 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -4772,8 +4772,10 @@ int

Re: [PATCH 3/7] usb: gadget: pxa25x_udc: use readl/writel for mmio

2016-02-17 Thread Krzysztof Hałasa
Arnd Bergmann writes: > Ok, so I guess what this means is that ixp4xx (or xscale in general) > implements its big-endian mode by adding a byteswap on its DRAM > and PCI interfaces in be32 mode, rather than by changing the behavior of > the load/store operations (as be8 mode does) or by having the

Re: [PATCH 3/7] usb: gadget: pxa25x_udc: use readl/writel for mmio

2016-02-17 Thread Krzysztof Hałasa
Arnd Bergmann writes: > ixp4xx is really special in that it performs hardware swapping for > internal devices based on CPU endianess but not on PCI devices. Again, IXP4xx does not perform hardware (nor any other) swapping for registers of on-chip devices. The registers are connected 1:1, bit 0 t

Re: [PATCH 3/7] usb: gadget: pxa25x_udc: use readl/writel for mmio

2016-02-16 Thread Krzysztof Hałasa
Arnd Bergmann writes: > Both writes leave the CPU core within the spinlock but are not serialized > with anything else, so there is no ordering between the CPUs when they > enter the shared bus, other than having address before data. You'd > expect to see address0, data0, address1, data1, but it

Re: [PATCH v2 01/15] arm: use of_platform_default_populate() to populate default bus

2016-02-16 Thread Krzysztof Hałasa
Kefeng Wang writes: > Use helper of_platform_default_populate() in linux/of_platform > when possible, instead of calling of_platform_populate() with > the default match table. > --- a/arch/arm/mach-cns3xxx/core.c > +++ b/arch/arm/mach-cns3xxx/core.c > @@ -395,8 +395,7 @@ static void __init cns3xx

Re: [PATCH 3/7] usb: gadget: pxa25x_udc: use readl/writel for mmio

2016-02-16 Thread Krzysztof Hałasa
Arnd Bergmann writes: > The barriers on a spinlock synchronize between CPUs but not an external > bus, so (on some architectures) a spinlock protecting an MMIO register > does not guarantee that two CPUs doing > > spin_lock(); > __raw_writel(address); > __raw_writel(data); >

Re: [PATCH 3/7] usb: gadget: pxa25x_udc: use readl/writel for mmio

2016-02-15 Thread Krzysztof Hałasa
Arnd Bergmann writes: > I consider the use of __raw_* accessors a bug, I don't think we should > ever do that because it hides how the hardware actually works, it doesn't > work with spinlocks, and it can lead to the compiler splitting up accesses > into byte sized ones (not on ARM with the curre

Re: [PATCH 3/7] usb: gadget: pxa25x_udc: use readl/writel for mmio

2016-02-14 Thread Krzysztof Hałasa
Arnd Bergmann writes: >> Anyway, I think readl()/writel() do the right thing: in BE mode they >> swap PCI accesses and don't swap normal registers, in LE mode nothing is >> swapped. > > This seems to be true when CONFIG_IXP4XX_INDIRECT_PCI is set, but > not otherwise. For the indirect variant, wr

Re: [PATCH 2/3] ARM: ixp4xx: avoid warning about ioport_map() macro argument processing

2016-02-14 Thread Krzysztof Hałasa
gt; around '+' in operand of '&' [-Wparentheses] > io_mem = ioport_map(ioport & ~3, NETCARD_IO_EXTENT); > > Simply adding parentheses in the macro avoids the warning > > Signed-off-by: Arnd Bergmann > --- > arch/arm/mach-ixp4xx/include/mach/io.h | 2 +-

Re: [PATCH 3/3] ARM: ixp4xx: move indirect I/O into common-pci.c

2016-02-14 Thread Krzysztof Hałasa
x/common-pci.c | 98 > ++ > arch/arm/mach-ixp4xx/include/mach/io.h | 95 +++----- > 2 files changed, 104 insertions(+), 89 deletions(-) Acked-by: Krzysztof Hałasa -- Krzysztof Halasa Industrial Research Institute for Automation and Measurements PIAP Al. Jerozolimskie 202, 02-486 Warsaw, Poland

Re: [PATCH 1/3] ARM: ixp4xx: use normal prototype for {read,write}s{b,w,l}

2016-02-14 Thread Krzysztof Hałasa
her definitions of the same functions pass void pointers, > so doing the same here avoids the warnings. > > Signed-off-by: Arnd Bergmann > --- > arch/arm/mach-ixp4xx/include/mach/io.h | 23 +-- > 1 file changed, 17 insertions(+), 6 deletions(-) Acked-by:

Re: [PATCH] ARM: drop unused Makefile.boot of Multiplatform SoCs

2016-02-14 Thread Krzysztof Hałasa
Masahiro Yamada writes: > The variable "MACHINE" is empty if CONFIG_ARCH_MULTIPLATFORM=y, > so these Makefile.boot files are never included. > > Signed-off-by: Masahiro Yamada > --- > > arch/arm/mach-cns3xxx/Makefile.boot | 3 --- Acked-by: Krzysztof Hałasa -

Re: [PATCH 3/7] usb: gadget: pxa25x_udc: use readl/writel for mmio

2016-01-29 Thread Krzysztof Hałasa
Arnd Bergmann writes: > The unclear part here is for IXP4xx, which supports both big-endian > and little-endian configurations. So far, the driver has done > no byteswap in either case. I suspect that is wrong and it would > actually need to swap in one or the other case, but I don't know > which

Re: [PATCH 1/7] usb: gadget: pxa25x_udc: move register definitions from arch

2016-01-29 Thread Krzysztof Hałasa
Arnd Bergmann writes: > This addresses both issues by moving all the definitions into the > pxa25x_udc driver itself. It turns out the only difference between > them was 'UDCCS_IO_ROF', and that could well be a mistake when it > was incorrectly copied from pxa25x to ixp4xx. > > Signed-off-by: Arn

Re: [PATCH] ARM: ixp4xx: fix read{b,w,l} return types

2015-11-25 Thread Krzysztof Hałasa
Arnd Bergmann writes: > On ixp4xx, the readl() function returns an 'unsigned long' output > when indirect I/O is used. This is unlike any other platform, and > it causes lots of harmless compiler warnings, such as: > > drivers/ata/libahci.c: In function 'ahci_show_host_version': > drivers/ata/lib

Re: [PATCH] ixp4xx_eth: Delete an unnecessary check before the function call "dma_pool_destroy"

2015-11-25 Thread Krzysztof Hałasa
SF Markus Elfring writes: > The dma_pool_destroy() function tests whether its argument is NULL > and then returns immediately. Thus the test around the call is not needed. > > This issue was detected by using the Coccinelle software. > --- a/drivers/net/ethernet/xscale/ixp4xx_eth.c > +++ b/drive

Re: [PATCH] ixp4xx_hss: Delete an unnecessary check before the function call "dma_pool_destroy"

2015-11-25 Thread Krzysztof Hałasa
SF Markus Elfring writes: > The dma_pool_destroy() function tests whether its argument is NULL > and then returns immediately. Thus the test around the call is not needed. > > This issue was detected by using the Coccinelle software. > --- a/drivers/net/wan/ixp4xx_hss.c > +++ b/drivers/net/wan/i

Re: [PATCH v2] ARM: cns3xxx: pci: avoid potential stack overflow

2015-10-08 Thread Krzysztof Hałasa
/pcie.c | 71 > + I'm ATM unable to test this change, but will do that at some point. Meanwhile, I guess there is nothing I can say against this patch. Thanks. Acked-by: Krzysztof Hałasa -- Krzysztof Halasa Industrial Research Institute for Automation and Measurements PIAP Al. J

Re: H264 headers generation for driver

2015-09-30 Thread Krzysztof Hałasa
Andrey Utkin writes: [H.264 headers] > I guess that one acceptable way is to pre-generate all headers for all > needed cases and ship them inlined; for correctness checking purpose, > it is possible to ship also a script or additional source code file > which is able to generate same headers. I

Re: [PATCH] defines modified to match the 80-char rule

2015-07-06 Thread Krzysztof Hałasa
Joe Perches writes: >> So, could we have the localized readability when it makes sense, >> and the default rules when nothing else applies? > > Then the question becomes how local. The answer seems easy to me: as much as it's needed to get the best readability. If that means 4 or 2 custom forma

Re: [PATCH] defines modified to match the 80-char rule

2015-07-05 Thread Krzysztof Hałasa
Joe Perches writes: > Nah, you're not an extremist, you're just preferring narrowly > localized readability over global consistency. > > That's fine and all, until you come up to LCONSOLE_ERROR_MSG > type use which blows the nice old formatting up. > > So what I suggested is just a simple consist

Re: [PATCH] defines modified to match the 80-char rule

2015-07-03 Thread Krzysztof Hałasa
Joe Perches writes: > -#define LCONSOLE(mask, format, ...) CDEBUG(D_CONSOLE | (mask), format, ## > __VA_ARGS__) > -#define LCONSOLE_INFO(format, ...) CDEBUG_LIMIT(D_CONSOLE, format, ## > __VA_ARGS__) > -#define LCONSOLE_WARN(format, ...) CDEBUG_LIMIT(D_CONSOLE | D_WARNING, > format, ## __VA_

Re: [PATCH] defines modified to match the 80-char rule

2015-07-01 Thread Krzysztof Hałasa
Mario Bambagini writes: > Defines have been written in more than one line to match the 80-character > rule. This error has been fixed 6 times in this file. > The file is fully compliant with respect to the coding rules now. Rules, maybe. But is it better, i.e., more readable? > --- a/drivers/st

Re: Coding style details (checkpatch)

2015-06-22 Thread Krzysztof Hałasa
Joe Perches writes: > #define VDREG8(a0) ((const u16[]){\ > a0 + 0x000, a0 + 0x010, a0 +0x020, a0 + 0x030, \ > a0 + 0x100, a0 + 0x110, a0 +0x120, a0 + 0x130}) > > as "const u16[]" is a $Type but "const u16[]" is not. > > Still, as written, the code seems fragile a

Re: Coding style details (checkpatch)

2015-06-21 Thread Krzysztof Hałasa
Joe Perches writes: > It might be better to use some base + index macro > as it could be smaller object code. > > Something like: > > #define REG_NO(base, multiplier, index) (base + (multiplier * index)) > > reg_write(vc->dev, REG_NO(0x10, 1, vc->ch), dma_cfg); > or > > #define VDMA_C

Re: [PATCH] Add PCI ID and quirk for Intersil/Techwell TW686[4589] AV capture cards.

2015-06-21 Thread Krzysztof Hałasa
Bjorn Helgaas writes: >> Intersil/Techwell TW686[4589]-based video capture cards have an empty >> (zero) class code. Fix it. >> > Applied to pci/misc for v4.2, with minor tweak as below to use > PCI_CLASS_MULTIMEDIA_OTHER instead of a bare number. Let me know > if you see any issues with this.

Re: Coding style details (checkpatch)

2015-06-21 Thread Krzysztof Hałasa
Joe Perches writes: > How is the macro used? > #define REG8_1(a0) ((const u16[8]){a0, a0 + 1, a0 + 2, a0 + 3}) #define REG8_1(a0) ((const u16[8]){a0, a0 + 1, a0 + 2, a0 + 3, a0 + 4, a0 + 5, a0 + 6, a0 + 7}) #define REG8_2(a0) ((const u16[8]){a0, a0 + 2, a0 + 4, a0 + 6, a0 + 8, a0 + 0xA, a0 + 0

Re: Coding style details (checkpatch)

2015-06-19 Thread Krzysztof Hałasa
Frans Klaver writes: > Ah, right. One might say that this is a false positive, but that's up > to Joe or Andy I guess. > > It may be valid C code, but I think this construction is slightly > funky to begin with. > > Which file is this? A new file, not yet sent anywhere. -- Krzysztof Halasa Ind

Re: Coding style details (checkpatch)

2015-06-19 Thread Krzysztof Hałasa
Frans Klaver writes: >> #define REG8_1(a0) ((const u16[8]){a0, a0 + 1, a0 + 2, a0 + 3}) >> >> vs >> >> #define REG8_1(a0) ((const u16[8]) {a0, a0 + 1, a0 + 2, a0 + 3}) >> ^ > > The prescribed style is to have no space between cast and castee. So, > the top opti

[PATCH] MEDIA PCI Kconfig ANALOG_TV -> CAMERA

2015-06-19 Thread Krzysztof Hałasa
eal camera in a laptop) but it at least doesn't select the TUNERs. Perhaps the following patch would make sense. Signed-off-by: Krzysztof Hałasa --- a/drivers/media/pci/Kconfig +++ b/drivers/media/pci/Kconfig @@ -11,16 +11,16 @@ if MEDIA_PCI_SUPPORT if MEDIA_CAMERA_SUPPORT comment &q

Coding style details

2015-06-19 Thread Krzysztof Hałasa
Hi, a simple question: which style is preferred? #define REG8_1(a0) ((const u16[8]){a0, a0 + 1, a0 + 2, a0 + 3}) vs #define REG8_1(a0) ((const u16[8]) {a0, a0 + 1, a0 + 2, a0 + 3}) ^ -- Krzysztof Halasa Industrial Research Institute for Automation and Measu

[PATCH] Add PCI ID and quirk for Intersil/Techwell TW686[4589] AV capture cards.

2015-06-19 Thread Krzysztof Hałasa
Intersil/Techwell TW686[4589]-based video capture cards have an empty (zero) class code. Fix it. Signed-off-by: Krzysztof Hałasa --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3662,6 +3662,26 @@ DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8892, quirk_use_pcie_bridge_dma_alias

Re: [PATCH] ARM: cns3xxx: pci: avoid potential stack overflow

2015-05-26 Thread Krzysztof Hałasa
Arnd Bergmann writes: > The cns3xxx_pcie_hw_init function uses excessive kernel > stack space because of a hack that puts a fake struct > pci_sys_data and struct pci_bus on the stack in order to > call the generic pci_bus_read_config accessors, which causes > a warning in ARM allmodconfig builds:

Re: On register r/w macros/procedures of drivers/media/pci

2015-04-20 Thread Krzysztof Hałasa
Andrey Utkin writes: > Please check first digit. I mean _5_864, in your post there's 6869. Ok, I just thought it may be a typo. I can now see 5864 is a H.264 encoder, while 686x are simpler frame-grabbers only. Sorry for the noise. -- Krzysztof Halasa Research Institute for Automation and Mea

Re: On register r/w macros/procedures of drivers/media/pci

2015-04-20 Thread Krzysztof Hałasa
Andrey Utkin writes: > I am starting a work on driver for techwell tw5864 media grabber&encoder. If this is tw6864 then I have a driver mostly completed. Actually I'm using tw6869 but I think this is very similar (4 channels instead of 8 and PCI instead of PCIe). I have 6864s but haven't yet tri

Re: [PATCH 14/15] ARM: cns3xxx: don't export static symbol

2015-03-12 Thread Krzysztof Hałasa
Arnd Bergmann writes: > Looks good. Krzysztof, do you want to pick this up and send me a > pull request together with other patches, or should I apply this > to the arm-soc fixes directly? The latter, please. Acked-by: Krzysztof Hałasa -- Krzysztof Halasa Research Institute for A

Re: [PATCH 08/11] ARM: ixp4xx: fix {in,out}s{bwl} data types

2015-02-16 Thread Krzysztof Hałasa
Arnd Bergmann writes: > Most platforms use void pointer arguments in these functions, but > ixp4xx does not, which triggers lots of warnings in device drivers like: > > net/ethernet/8390/ne2k-pci.c: In function 'ne2k_pci_get_8390_hdr': > net/ethernet/8390/ne2k-pci.c:503:3: warning: passing argume

Re: [PATCH] net:wan:Change location of debug printk statement in the function,hss_hdlc_poll

2015-01-28 Thread Krzysztof Hałasa
Nicholas Krause writes: > This changes the location of the printk for montioring if the stucture pointer > desc of type structure desc has a error count due to failing in the switch > statement for checking it's status from the default switch case in this switch > to the area of the function for

Re: [PATCH 06/16] ARM: cns3xxx: convert PCI to use generic config accesses

2015-01-28 Thread Krzysztof Hałasa
Rob Herring writes: > Convert the cns3xxx PCI driver to use the generic config access functions. > > This changes accesses from __raw_readl/__raw_writel to readl/writel. > > arch/arm/mach-cns3xxx/pcie.c | 52 > +--- This looks fine: A

[PATCH] Fix unbalanced mutex in dma_pool_create().

2014-09-18 Thread Krzysztof Hałasa
dma_pool_create() needs to unlock the mutex in error case. The bug has been present starting with v3.16-rc1 (cc6b664a). Signed-off-by: Krzysztof Hałasa Cc: sta...@vger.kernel.org --- a/mm/dmapool.c +++ b/mm/dmapool.c @@ -174,11 +174,11 @@ struct dma_pool *dma_pool_create(const char *name

Re: [PATCH v2] CNS3xxx: Fix PCIe early iotable_init().

2014-03-18 Thread Krzysztof Hałasa
Arnd Bergmann writes: > Applied to next/fixes-non-critical. > > Since the problem is not new and you didn't mark the patch as 'stable', > this seems to be the right place. Let us know if you need backports > to stable kernels, also fo the other patch. Sure, BTW there is also that problem with PC

[PATCH2] CNS3xxx: Fix a WARN() related to IRQ allocation.

2014-03-04 Thread Krzysztof Hałasa
off-by: Krzysztof Hałasa --- a/arch/arm/mach-cns3xxx/cns3420vb.c +++ b/arch/arm/mach-cns3xxx/cns3420vb.c @@ -246,7 +246,6 @@ static void __init cns3420_map_io(void) MACHINE_START(CNS3420VB, "Cavium Networks CNS3420 Validation Board") .atag_offset= 0x100, -

[PATCH2] CNS3xxx: Fix a WARN() related to IRQ allocation.

2014-03-04 Thread Krzysztof Hałasa
off-by: Krzysztof Hałasa -- Krzysztof Halasa Research Institute for Automation and Measurements PIAP Al. Jerozolimskie 202, 02-486 Warsaw, Poland -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majo

Re: [PATCH v2] CNS3xxx: Fix PCIe early iotable_init().

2014-03-04 Thread Krzysztof Hałasa
khal...@piap.pl (Krzysztof Hałasa) writes: > This patch fixes the following BUG: > >> kernel BUG at mm/vmalloc.c:1132! >> PC is at vm_area_add_early+0x20/0x84 >> LR is at add_static_vm_early+0xc/0x60 >> >> The problem is cns3xxx_pcie_init() (device_initcal

[PATCH v2] CNS3xxx: Fix PCIe early iotable_init().

2014-03-03 Thread Krzysztof Hałasa
This patch fixes the following BUG: > kernel BUG at mm/vmalloc.c:1132! > PC is at vm_area_add_early+0x20/0x84 > LR is at add_static_vm_early+0xc/0x60 > > The problem is cns3xxx_pcie_init() (device_initcall) calls the "early" > iotable_init(). Instead of merely calling the PCIe iotable_init() from

Re: [PATCH] CNS3xxx: Fix PCIe early iotable_init().

2014-03-03 Thread Krzysztof Hałasa
Arnd Bergmann writes: > Patch looks good, but please add the changeset description from > your first patch. I wonder if another approach would be better. I don't like the .pfn messing and the bugs that function introduces. -- Krzysztof Halasa Research Institute for Automation and Measurements

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