date:20160315

Re: [PATCH 1/4 v3] drm: Add support of ARC PGU display controller

2016-03-15 Thread Daniel Vetter

On Tue, Mar 15, 2016 at 03:24:46PM +, Alexey Brodkin wrote:
> Hi Daniel,
> 
> On Tue, 2016-03-15 at 09:10 +0100, Daniel Vetter wrote:
> > On Mon, Mar 14, 2016 at 11:15:59AM +, Alexey Brodkin wrote:
> > > 
> > > On Mon, 2016-03-14 at 08:00 +0100, Daniel Vetter wrote:
> > > > 
> > > > On Fri, Mar 11, 2016 at 06:42:36PM +0300, Alexey Brodkin wrote:
> > > > > 
> > > > > +static int arcpgu_atomic_commit(struct drm_device *dev,
> > > > > + struct drm_atomic_state *state, 
> > > > > bool async)
> > > > > +{
> > > > > + return drm_atomic_helper_commit(dev, state, false);
> > > > Note that this isn't really async if you ever get around to implement
> > > > fence support or vblank support. Just fyi.
> > > Ok but for now should I leave it as it is?
> > Yeah ok as-is, hence just fyi.
> 
> Thanks. Just wanted to make sure we're on the same page :)
> 
> > > 
> > > > 
> > > > > 
> > > > > +static struct drm_driver arcpgu_drm_driver = {
> > > > > + .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME |
> > > > > +    DRIVER_ATOMIC,
> > > > > + .preclose = arcpgu_preclose,
> > > > > + .lastclose = arcpgu_lastclose,
> > > > > + .name = "drm-arcpgu",
> > > > > + .desc = "ARC PGU Controller",
> > > > > + .date = "20160219",
> > > > > + .major = 1,
> > > > > + .minor = 0,
> > > > > + .patchlevel = 0,
> > > > > + .fops = _drm_ops,
> > > > > + .load = arcpgu_load,
> > > > > + .unload = arcpgu_unload,
> > > > Load and unload hooks are deprecated (it's a classic midlayer mistake).
> > > > Please use drm_dev_alloc/register pairs directly instead, and put your
> > > > device setup code in-between. Similar for unloading. There's a bunch of
> > > > example drivers converted already.
> > > Ok I took "atmel-hlcdc" as example.
> > > And that's interesting.
> > > 
> > > If I put my arcpgu_load() in between drm_dev_alloc() and
> > > drm_dev_register() then I'm getting this on the driver probe:
> > > -->8---
> > > [drm] Initialized drm 1.1.0 20060810
> > > arcpgu e0017000.pgu: arc_pgu ID: 0xabbabaab
> > > [ cut here ]
> > > WARNING: CPU: 0 PID: 1 at lib/kobject.c:244 
> > > kobject_add_internal+0x17c/0x498()
> > > kobject_add_internal failed for card0-HDMI-A-1 (error: -2 parent: card0)
> > > Modules linked in:
> > > CPU: 0 PID: 1 Comm: swapper Not tainted 4.5.0-rc3-01062-ga447822-dirty #17
> > > 
> > > Stack Trace:
> > >   arc_unwind_core.constprop.1+0xa4/0x110
> > >   warn_slowpath_fmt+0x6e/0xfc
> > >   kobject_add_internal+0x17c/0x498
> > >   kobject_add+0x98/0xe4
> > >   device_add+0xc6/0x734
> > >   device_create_with_groups+0x12a/0x144
> > >   drm_sysfs_connector_add+0x54/0xe8
> > >   arcpgu_drm_hdmi_init+0xd4/0x17c
> > >   arcpgu_probe+0x138/0x24c
> > >   platform_drv_probe+0x2e/0x6c
> > >   really_probe+0x212/0x35c
> > >   __driver_attach+0x90/0x94
> > >   bus_for_each_dev+0x46/0x80
> > >   bus_add_driver+0x14e/0x1b4
> > >   driver_register+0x64/0x108
> > >   do_one_initcall+0x86/0x194
> > >   kernel_init_freeable+0xf0/0x188
> > > ---[ end trace c67166ad43ddcce2 ]---
> > > [drm:drm_sysfs_connector_add] adding "HDMI-A-1" to sysfs
> > > [drm:drm_sysfs_connector_add] *ERROR* failed to register connector 
> > > device: -2
> > > arcpgu e0017000.pgu: failed to regiter DRM connector and helper funcs
> > > arcpgu: probe of e0017000.pgu failed with error -2
> > > -->8---
> > > 
> > > But if I move arcpgu_load() after drm_dev_register() then everything
> > > starts properly and I may see HDMI screen works perfectly fine.
> > > 
> > > Any thoughts?
> > Oops, yeah missed that detail. If you look at atmel it has a loop to
> > register all the drm connectors _after_ calling drm_dev_register().
> > Totally forgot about that. Can you pls
> > - Extract a new drm_connector_register_all() function
> >   (atmel_hlcdc_dc_connector_plug_all seems to be the best template),
> >   including kerneldoc.
> > - Adjust kerneldoc of drm_dev_register() to mention
> >   drm_connector_register_all() and that ordering constraint.
> > - Roll that helper out to all the drivers that currently hand-roll it (one
> >   patch per driver).
> > 
> > I know a bit of work but imo not too much, and by doing some small
> > refactoring every time someone stumbles over a drm pitfall we keep the
> > subsystem clean to understand. You're up for this? Would be a prep
> > series, I'll happily review it to get it merged fast. Just a few weeks ago
> > I merged 20+ patches to make ->mode_fixup hooks optional and remove dummy
> > ones all over the subsystem, in other words: You'll have my full attention
> > ;-)
> 
> Sure, I'm ready to pay that price :)
> Stay tuned and patches will follow.

Awesome, looking forward to your patches.

> > > 
> > > > 
> > > > > 
> > > > > + .dumb_create = drm_gem_cma_dumb_create,
> > > > > +

Re: [PATCH 1/4 v3] drm: Add support of ARC PGU display controller

2016-03-15 Thread Alexey Brodkin

Hi Daniel,

On Tue, 2016-03-15 at 09:10 +0100, Daniel Vetter wrote:
> On Mon, Mar 14, 2016 at 11:15:59AM +, Alexey Brodkin wrote:
> > 
> > On Mon, 2016-03-14 at 08:00 +0100, Daniel Vetter wrote:
> > > 
> > > On Fri, Mar 11, 2016 at 06:42:36PM +0300, Alexey Brodkin wrote:
> > > > 
> > > > +static int arcpgu_atomic_commit(struct drm_device *dev,
> > > > +   struct drm_atomic_state *state, 
> > > > bool async)
> > > > +{
> > > > +   return drm_atomic_helper_commit(dev, state, false);
> > > Note that this isn't really async if you ever get around to implement
> > > fence support or vblank support. Just fyi.
> > Ok but for now should I leave it as it is?
> Yeah ok as-is, hence just fyi.

Thanks. Just wanted to make sure we're on the same page :)

> > 
> > > 
> > > > 
> > > > +static struct drm_driver arcpgu_drm_driver = {
> > > > +   .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME |
> > > > +      DRIVER_ATOMIC,
> > > > +   .preclose = arcpgu_preclose,
> > > > +   .lastclose = arcpgu_lastclose,
> > > > +   .name = "drm-arcpgu",
> > > > +   .desc = "ARC PGU Controller",
> > > > +   .date = "20160219",
> > > > +   .major = 1,
> > > > +   .minor = 0,
> > > > +   .patchlevel = 0,
> > > > +   .fops = _drm_ops,
> > > > +   .load = arcpgu_load,
> > > > +   .unload = arcpgu_unload,
> > > Load and unload hooks are deprecated (it's a classic midlayer mistake).
> > > Please use drm_dev_alloc/register pairs directly instead, and put your
> > > device setup code in-between. Similar for unloading. There's a bunch of
> > > example drivers converted already.
> > Ok I took "atmel-hlcdc" as example.
> > And that's interesting.
> > 
> > If I put my arcpgu_load() in between drm_dev_alloc() and
> > drm_dev_register() then I'm getting this on the driver probe:
> > -->8---
> > [drm] Initialized drm 1.1.0 20060810
> > arcpgu e0017000.pgu: arc_pgu ID: 0xabbabaab
> > [ cut here ]
> > WARNING: CPU: 0 PID: 1 at lib/kobject.c:244 
> > kobject_add_internal+0x17c/0x498()
> > kobject_add_internal failed for card0-HDMI-A-1 (error: -2 parent: card0)
> > Modules linked in:
> > CPU: 0 PID: 1 Comm: swapper Not tainted 4.5.0-rc3-01062-ga447822-dirty #17
> > 
> > Stack Trace:
> >   arc_unwind_core.constprop.1+0xa4/0x110
> >   warn_slowpath_fmt+0x6e/0xfc
> >   kobject_add_internal+0x17c/0x498
> >   kobject_add+0x98/0xe4
> >   device_add+0xc6/0x734
> >   device_create_with_groups+0x12a/0x144
> >   drm_sysfs_connector_add+0x54/0xe8
> >   arcpgu_drm_hdmi_init+0xd4/0x17c
> >   arcpgu_probe+0x138/0x24c
> >   platform_drv_probe+0x2e/0x6c
> >   really_probe+0x212/0x35c
> >   __driver_attach+0x90/0x94
> >   bus_for_each_dev+0x46/0x80
> >   bus_add_driver+0x14e/0x1b4
> >   driver_register+0x64/0x108
> >   do_one_initcall+0x86/0x194
> >   kernel_init_freeable+0xf0/0x188
> > ---[ end trace c67166ad43ddcce2 ]---
> > [drm:drm_sysfs_connector_add] adding "HDMI-A-1" to sysfs
> > [drm:drm_sysfs_connector_add] *ERROR* failed to register connector device: 
> > -2
> > arcpgu e0017000.pgu: failed to regiter DRM connector and helper funcs
> > arcpgu: probe of e0017000.pgu failed with error -2
> > -->8---
> > 
> > But if I move arcpgu_load() after drm_dev_register() then everything
> > starts properly and I may see HDMI screen works perfectly fine.
> > 
> > Any thoughts?
> Oops, yeah missed that detail. If you look at atmel it has a loop to
> register all the drm connectors _after_ calling drm_dev_register().
> Totally forgot about that. Can you pls
> - Extract a new drm_connector_register_all() function
>   (atmel_hlcdc_dc_connector_plug_all seems to be the best template),
>   including kerneldoc.
> - Adjust kerneldoc of drm_dev_register() to mention
>   drm_connector_register_all() and that ordering constraint.
> - Roll that helper out to all the drivers that currently hand-roll it (one
>   patch per driver).
> 
> I know a bit of work but imo not too much, and by doing some small
> refactoring every time someone stumbles over a drm pitfall we keep the
> subsystem clean to understand. You're up for this? Would be a prep
> series, I'll happily review it to get it merged fast. Just a few weeks ago
> I merged 20+ patches to make ->mode_fixup hooks optional and remove dummy
> ones all over the subsystem, in other words: You'll have my full attention
> ;-)

Sure, I'm ready to pay that price :)
Stay tuned and patches will follow.

> > 
> > > 
> > > > 
> > > > +   .dumb_create = drm_gem_cma_dumb_create,
> > > > +   .dumb_map_offset = drm_gem_cma_dumb_map_offset,
> > > > +   .dumb_destroy = drm_gem_dumb_destroy,
> > > > +   .get_vblank_counter = drm_vblank_no_hw_counter,
> > > > +   .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
> > > > +   .prime_fd_to_handle = drm_gem_prime_fd_to_handle,

Re: [PATCH] ARC: axs10x - add Ethernet PHY description in .dts

2016-03-15 Thread Alexey Brodkin

Hi Sergei,

On Tue, 2016-03-15 at 17:38 +0300, Sergei Shtylyov wrote:
> Hello.
> 
> On 3/15/2016 12:29 PM, Alexey Brodkin wrote:
> 
> > 
> > Following commit broke DW GMAC functionality on AXS10x boards:
> > http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e34d65696d2ef13dc32f2a162556c86c461ed763
> > 
> > That's what happens on eth0 up:
> > --->8
> > libphy: PHY stmmac-0: not found
> > eth0: Could not attach to PHY
> > stmmac_open: Cannot attach to PHY (error: -19)
> > --->8
> > 
> > Simplest solution is to add PHY description in board's .dts.
> > And so we do here.
> > 
> > Signed-off-by: Alexey Brodkin 
> > Cc: Rob Herring 
> > Cc: Phil Reid 
> > Cc: David S. Miller 
> > Cc: linux-ker...@vger.kernel.org
> > Cc: net...@vger.kernel.org
> > Cc: sta...@vger.kernel.org # 4.5.x
> > ---
> >   arch/arc/boot/dts/axs10x_mb.dtsi | 8 
> >   1 file changed, 8 insertions(+)
> > 
> > diff --git a/arch/arc/boot/dts/axs10x_mb.dtsi 
> > b/arch/arc/boot/dts/axs10x_mb.dtsi
> > index 44a578c..04b999e 100644
> > --- a/arch/arc/boot/dts/axs10x_mb.dtsi
> > +++ b/arch/arc/boot/dts/axs10x_mb.dtsi
> > @@ -47,6 +47,14 @@
> >     clocks = <>;
> >     clock-names = "stmmaceth";
> >     max-speed = <100>;
> > +   mdio0 {
> > +   #address-cells = <1>;
> > +   #size-cells = <0>;
> > +   compatible = "snps,dwmac-mdio";
> > +   phy0: ethernet-phy@0 {
> The naming is inconsistent with the "reg" prop specified, should be @1.

Makes sense.
Will re-send it with mentioned fix.

-Alexey
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Re: [PATCH] ARC: axs10x - add Ethernet PHY description in .dts

2016-03-15 Thread Sergei Shtylyov


Hello.

On 3/15/2016 12:29 PM, Alexey Brodkin wrote:


Following commit broke DW GMAC functionality on AXS10x boards:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e34d65696d2ef13dc32f2a162556c86c461ed763

That's what happens on eth0 up:
--->8
libphy: PHY stmmac-0: not found
eth0: Could not attach to PHY
stmmac_open: Cannot attach to PHY (error: -19)
--->8

Simplest solution is to add PHY description in board's .dts.
And so we do here.

Signed-off-by: Alexey Brodkin 
Cc: Rob Herring 
Cc: Phil Reid 
Cc: David S. Miller 
Cc: linux-ker...@vger.kernel.org
Cc: net...@vger.kernel.org
Cc: sta...@vger.kernel.org # 4.5.x
---
  arch/arc/boot/dts/axs10x_mb.dtsi | 8 
  1 file changed, 8 insertions(+)

diff --git a/arch/arc/boot/dts/axs10x_mb.dtsi b/arch/arc/boot/dts/axs10x_mb.dtsi
index 44a578c..04b999e 100644
--- a/arch/arc/boot/dts/axs10x_mb.dtsi
+++ b/arch/arc/boot/dts/axs10x_mb.dtsi
@@ -47,6 +47,14 @@
clocks = <>;
clock-names = "stmmaceth";
max-speed = <100>;
+   mdio0 {
+   #address-cells = <1>;
+   #size-cells = <0>;
+   compatible = "snps,dwmac-mdio";
+   phy0: ethernet-phy@0 {


   The naming is inconsistent with the "reg" prop specified, should be @1.

MBR, Sergei


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Re: [PATCH] Remove the inclusion of pci-bridge.h and pci-dma-compat.h

2016-03-15 Thread Joao Pinto


No problem! Thanks!

On 3/15/2016 1:51 PM, Bjorn Helgaas wrote:
> On Tue, Mar 15, 2016 at 11:06:02AM +, Joao Pinto wrote:
>> While building linux-next the test robot detected that the pci.h was 
>> including
>> two removed header files (pci-dma-compat.h and pci-bridge.h) causing the
>> process to fail:
>> http://lists.infradead.org/pipermail/linux-snps-arc/2016-March/000711.html
>>
>> This patch has the goal to fix the build problem.
>>
>> Signed-off-by: Joao Pinto 
> 
> Thanks, Joao, I folded this fix into the original commit.  I should have
> caught this myself, since I'm the one who removed pci-bridge.h.
> 
>> ---
>>  arch/arc/include/asm/pci.h | 3 ---
>>  1 file changed, 3 deletions(-)
>>
>> diff --git a/arch/arc/include/asm/pci.h b/arch/arc/include/asm/pci.h
>> index 2f2011c..ba56c23 100644
>> --- a/arch/arc/include/asm/pci.h
>> +++ b/arch/arc/include/asm/pci.h
>> @@ -10,9 +10,6 @@
>>  #define _ASM_ARC_PCI_H
>>  
>>  #ifdef __KERNEL__
>> -#include 
>> -#include 
>> -
>>  #include 
>>  
>>  #define PCIBIOS_MIN_IO 0x100
>> -- 
>> 1.8.1.5
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-pci" in
>> the body of a message to majord...@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html


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Re: [PATCH] Remove the inclusion of pci-bridge.h and pci-dma-compat.h

2016-03-15 Thread Bjorn Helgaas

On Tue, Mar 15, 2016 at 11:06:02AM +, Joao Pinto wrote:
> While building linux-next the test robot detected that the pci.h was including
> two removed header files (pci-dma-compat.h and pci-bridge.h) causing the
> process to fail:
> http://lists.infradead.org/pipermail/linux-snps-arc/2016-March/000711.html
> 
> This patch has the goal to fix the build problem.
> 
> Signed-off-by: Joao Pinto 

Thanks, Joao, I folded this fix into the original commit.  I should have
caught this myself, since I'm the one who removed pci-bridge.h.

> ---
>  arch/arc/include/asm/pci.h | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/arch/arc/include/asm/pci.h b/arch/arc/include/asm/pci.h
> index 2f2011c..ba56c23 100644
> --- a/arch/arc/include/asm/pci.h
> +++ b/arch/arc/include/asm/pci.h
> @@ -10,9 +10,6 @@
>  #define _ASM_ARC_PCI_H
>  
>  #ifdef __KERNEL__
> -#include 
> -#include 
> -
>  #include 
>  
>  #define PCIBIOS_MIN_IO 0x100
> -- 
> 1.8.1.5
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-pci" in
> the body of a message to majord...@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

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[PATCH] ARC: Don't source drivers/pci/pcie/Kconfig ourselves

2016-03-15 Thread Andreas Ziegler

Commit 5f8fc43217a0 ("PCI: Include pci/pcie/Kconfig directly from
pci/Kconfig") in linux-next changed drivers/pci/Kconfig to include
drivers/pci/pcie/Kconfig itself, so that architectures do not need
to source both files themselves. ARC just recently gained PCI support
through commit 6b3fb77998dd ("ARC: Add PCI support"), but this change
was based on the old behaviour of the Kconfig files. This makes
Kconfig now spit out the following warnings:

drivers/pci/pcie/Kconfig:61:warning: choice value used outside its choice group
drivers/pci/pcie/Kconfig:67:warning: choice value used outside its choice group
drivers/pci/pcie/Kconfig:74:warning: choice value used outside its choice group

This change updates the Kconfig file for ARC, dropping the now
unnecessary 'source' statement, which makes the warning disappear.

Signed-off-by: Andreas Ziegler 
---
 arch/arc/Kconfig | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 69d05f5..282efec 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -592,7 +592,6 @@ config PCI_SYSCALL
def_bool PCI
 
 source "drivers/pci/Kconfig"
-source "drivers/pci/pcie/Kconfig"
 
 endmenu
 
-- 
1.9.1


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Re: [PATCH] Remove the inclusion of pci-bridge.h and pci-dma-compat.h

2016-03-15 Thread Vineet Gupta

On Tuesday 15 March 2016 04:36 PM, Joao Pinto wrote:
> While building linux-next the test robot detected that the pci.h was including
> two removed header files (pci-dma-compat.h and pci-bridge.h) causing the
> process to fail:
> http://lists.infradead.org/pipermail/linux-snps-arc/2016-March/000711.html
>
> This patch has the goal to fix the build problem.
>
> Signed-off-by: Joao Pinto 

Acked-by: Vineet Gupta 

@Bjorn since the ARC PCI support is still not upstream, and was slated to go via
you, please pick this one up as well.

Thx,
-Vineet

> ---
>  arch/arc/include/asm/pci.h | 3 ---
>  1 file changed, 3 deletions(-)
>
> diff --git a/arch/arc/include/asm/pci.h b/arch/arc/include/asm/pci.h
> index 2f2011c..ba56c23 100644
> --- a/arch/arc/include/asm/pci.h
> +++ b/arch/arc/include/asm/pci.h
> @@ -10,9 +10,6 @@
>  #define _ASM_ARC_PCI_H
>  
>  #ifdef __KERNEL__
> -#include 
> -#include 
> -
>  #include 
>  
>  #define PCIBIOS_MIN_IO 0x100


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[PATCH] ARC: axs10x - add Ethernet PHY description in .dts

2016-03-15 Thread Alexey Brodkin

Following commit broke DW GMAC functionality on AXS10x boards:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e34d65696d2ef13dc32f2a162556c86c461ed763

That's what happens on eth0 up:
--->8
libphy: PHY stmmac-0: not found
eth0: Could not attach to PHY
stmmac_open: Cannot attach to PHY (error: -19)
--->8

Simplest solution is to add PHY description in board's .dts.
And so we do here.

Signed-off-by: Alexey Brodkin 
Cc: Rob Herring 
Cc: Phil Reid 
Cc: David S. Miller 
Cc: linux-ker...@vger.kernel.org
Cc: net...@vger.kernel.org
Cc: sta...@vger.kernel.org # 4.5.x
---
 arch/arc/boot/dts/axs10x_mb.dtsi | 8 
 1 file changed, 8 insertions(+)

diff --git a/arch/arc/boot/dts/axs10x_mb.dtsi b/arch/arc/boot/dts/axs10x_mb.dtsi
index 44a578c..04b999e 100644
--- a/arch/arc/boot/dts/axs10x_mb.dtsi
+++ b/arch/arc/boot/dts/axs10x_mb.dtsi
@@ -47,6 +47,14 @@
clocks = <>;
clock-names = "stmmaceth";
max-speed = <100>;
+   mdio0 {
+   #address-cells = <1>;
+   #size-cells = <0>;
+   compatible = "snps,dwmac-mdio";
+   phy0: ethernet-phy@0 {
+   reg = <1>;
+   };
+   };
};
 
ehci@0x4 {
-- 
2.5.0


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Re: [PATCH 1/4 v3] drm: Add support of ARC PGU display controller

Re: [PATCH 1/4 v3] drm: Add support of ARC PGU display controller

Re: [PATCH] ARC: axs10x - add Ethernet PHY description in .dts

Re: [PATCH] ARC: axs10x - add Ethernet PHY description in .dts

Re: [PATCH] Remove the inclusion of pci-bridge.h and pci-dma-compat.h

Re: [PATCH] Remove the inclusion of pci-bridge.h and pci-dma-compat.h

[PATCH] ARC: Don't source drivers/pci/pcie/Kconfig ourselves

Re: [PATCH] Remove the inclusion of pci-bridge.h and pci-dma-compat.h

[PATCH] ARC: axs10x - add Ethernet PHY description in .dts

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