Re: [PATCH 5/8] dt-bindings: nt35510: add compatible for FRIDA FRD400B25025-A-CTK

2023-12-31 Thread kernel test robot
Hi Dario,

kernel test robot noticed the following build warnings:

[auto build test WARNING on atorgue-stm32/stm32-next]
[also build test WARNING on drm-misc/drm-misc-next lee-mfd/for-mfd-next 
robh/for-next linus/master v6.7-rc7 next-20231222]
[cannot apply to lee-mfd/for-mfd-fixes]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:
https://github.com/intel-lab-lkp/linux/commits/Dario-Binacchi/dt-bindings-mfd-stm32f7-Add-binding-definition-for-DSI/20231229-215601
base:   https://git.kernel.org/pub/scm/linux/kernel/git/atorgue/stm32.git 
stm32-next
patch link:
https://lore.kernel.org/r/20231229135154.675946-6-dario.binacchi%40amarulasolutions.com
patch subject: [PATCH 5/8] dt-bindings: nt35510: add compatible for FRIDA 
FRD400B25025-A-CTK
:: branch date: 20 hours ago
:: commit date: 20 hours ago
compiler: loongarch64-linux-gcc (GCC) 13.2.0
reproduce: 
(https://download.01.org/0day-ci/archive/20231230/202312301748.2brgs7xs-...@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot 
| Closes: https://lore.kernel.org/r/202312301748.2brgs7xs-...@intel.com/

dtcheck warnings: (new ones prefixed by >>)
>> Documentation/devicetree/bindings/display/panel/novatek,nt35510.yaml:21:7: 
>> [error] duplication of key "items" in mapping (key-duplicates)
--
>> Documentation/devicetree/bindings/display/panel/novatek,nt35510.yaml:21:7: 
>> found duplicate key "items" with value "[]" (original value: "[]")
   Documentation/devicetree/bindings/iio/pressure/honeywell,mprls0025pa.yaml: 
properties:honeywell,pmin-pascal: '$ref' should not be valid under {'const': 
'$ref'}
hint: Standard unit suffix properties don't need a type $ref
from schema $id: http://devicetree.org/meta-schemas/core.yaml#
   Documentation/devicetree/bindings/iio/pressure/honeywell,mprls0025pa.yaml: 
properties:honeywell,pmax-pascal: '$ref' should not be valid under {'const': 
'$ref'}
hint: Standard unit suffix properties don't need a type $ref
from schema $id: http://devicetree.org/meta-schemas/core.yaml#
--
>> Documentation/devicetree/bindings/display/panel/novatek,nt35510.yaml: 
>> ignoring, error parsing file
   Documentation/devicetree/bindings/net/snps,dwmac.yaml: mac-mode: missing 
type definition

vim +/items +21 
Documentation/devicetree/bindings/display/panel/novatek,nt35510.yaml

5ce96fe032f43e Linus Walleij  2020-02-23   8  
5ce96fe032f43e Linus Walleij  2020-02-23   9  maintainers:
5ce96fe032f43e Linus Walleij  2020-02-23  10- Linus Walleij 

5ce96fe032f43e Linus Walleij  2020-02-23  11  
5ce96fe032f43e Linus Walleij  2020-02-23  12  allOf:
5ce96fe032f43e Linus Walleij  2020-02-23  13- $ref: panel-common.yaml#
5ce96fe032f43e Linus Walleij  2020-02-23  14  
5ce96fe032f43e Linus Walleij  2020-02-23  15  properties:
5ce96fe032f43e Linus Walleij  2020-02-23  16compatible:
859f1d9e26606c Dario Binacchi 2023-12-29  17  oneOf:
5ce96fe032f43e Linus Walleij  2020-02-23  18items:
5ce96fe032f43e Linus Walleij  2020-02-23  19  - const: hydis,hva40wv1
5ce96fe032f43e Linus Walleij  2020-02-23  20  - const: novatek,nt35510
859f1d9e26606c Dario Binacchi 2023-12-29 @21items:
859f1d9e26606c Dario Binacchi 2023-12-29  22  - const: 
frida,frd400b25025
859f1d9e26606c Dario Binacchi 2023-12-29  23  - const: novatek,nt35510
5ce96fe032f43e Linus Walleij  2020-02-23  24description: This indicates 
the panel manufacturer of the panel
5ce96fe032f43e Linus Walleij  2020-02-23  25  that is in turn using the 
NT35510 panel driver. The compatible
5ce96fe032f43e Linus Walleij  2020-02-23  26  string determines how the 
NT35510 panel driver shall be configured
5ce96fe032f43e Linus Walleij  2020-02-23  27  to work with the 
indicated panel. The novatek,nt35510 compatible shall
5ce96fe032f43e Linus Walleij  2020-02-23  28  always be provided as a 
fallback.
5ce96fe032f43e Linus Walleij  2020-02-23  29reg: true
5ce96fe032f43e Linus Walleij  2020-02-23  30reset-gpios: true
5ce96fe032f43e Linus Walleij  2020-02-23  31vdd-supply:
5ce96fe032f43e Linus Walleij  2020-02-23  32  description: regulator that 
supplies the vdd voltage
5ce96fe032f43e Linus Walleij  2020-02-23  33vddi-supply:
5ce96fe032f43e Linus Walleij  2020-02-23  34  description: regulator that 
supplies the vddi voltage
5ce96fe032f43e Linus Walleij  2020-02-23  35backlight: true
5ce96fe032f43e Linus Walleij  2020-02-23  36  
5ce96fe032f43e Linus Walleij  2020-02-23  37  required:
5ce96fe032f43e Linus Walleij  2020-02-23  38- compatible
5ce96fe032f43e Linus Walleij  2020-02-23  39- reg
5ce96fe032f43e Linus Walleij  2020-02-23  40  

-- 
0-DAY CI 

[PATCH] drm/amd/display: dcn35_hwseq: use common comment to prevent kernel-doc warnings

2023-12-31 Thread Randy Dunlap
Change non-kernel-doc comments to use "/*" to prevent warnings from
scripts/kernel-doc.

dcn35_hwseq.c:1124: warning: This comment starts with '/**', but isn't a 
kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
 * power down sequence
dcn35_hwseq.c:1124: warning: missing initial short description on line:
 * power down sequence
dcn35_hwseq.c:1176: warning: This comment starts with '/**', but isn't a 
kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
 * power up sequence
dcn35_hwseq.c:1176: warning: missing initial short description on line:
 * power up sequence

Signed-off-by: Randy Dunlap 
Cc: Harry Wentland 
Cc: Leo Li 
Cc: Rodrigo Siqueira 
Cc: Alex Deucher 
Cc: Christian König 
Cc: "Pan, Xinhui" 
Cc: amd-...@lists.freedesktop.org
Cc: Maarten Lankhorst 
Cc: Maxime Ripard 
Cc: Thomas Zimmermann 
---
I thought that I sent this patch but it's not in the lore archive
so I'm sending it again. Apologies if you get it twice.

 drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c |4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff -- a/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c 
b/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c
@@ -1120,7 +1120,7 @@ void dcn35_calc_blocks_to_ungate(struct
update_state->pg_res_update[PG_HPO] = true;
 
 }
-/**
+/*
 * power down sequence
 * ONO Region 3, DCPG 25: hpo - SKIPPED
 * ONO Region 4, DCPG 0: dchubp0, dpp0
@@ -1172,7 +1172,7 @@ void dcn35_hw_block_power_down(struct dc
//domain22, 23, 25 currently always on.
 
 }
-/**
+/*
 * power up sequence
 * ONO Region 0, DCPG 22: dccg dio dcio - SKIPPED
 * ONO Region 2, DCPG 24: mpc opp optc dwb


[syzbot] [dri?] [media?] memory leak in get_sg_table

2023-12-31 Thread syzbot
Hello,

syzbot found the following issue on:

HEAD commit:fbafc3e621c3 Merge tag 'for_linus' of git://git.kernel.org..
git tree:   upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=10ae11cee8
kernel config:  https://syzkaller.appspot.com/x/.config?x=e81921f96ae24ec0
dashboard link: https://syzkaller.appspot.com/bug?extid=9b4adfed366b14496e7e
compiler:   gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 
2.40
syz repro:  https://syzkaller.appspot.com/x/repro.syz?x=1635d436e8
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15e8171ae8

Downloadable assets:
disk image: 
https://storage.googleapis.com/syzbot-assets/76e4a40f41aa/disk-fbafc3e6.raw.xz
vmlinux: 
https://storage.googleapis.com/syzbot-assets/a2f88511ce98/vmlinux-fbafc3e6.xz
kernel image: 
https://storage.googleapis.com/syzbot-assets/2b21933ed8f1/bzImage-fbafc3e6.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+9b4adfed366b14496...@syzkaller.appspotmail.com

Warning: Permanently added '10.128.0.162' (ED25519) to the list of known hosts.
executing program
executing program
BUG: memory leak
unreferenced object 0x88810af03840 (size 16):
  comm "syz-executor111", pid 5038, jiffies 4294942820 (age 13.250s)
  hex dump (first 16 bytes):
80 8b 89 0b 81 88 ff ff 04 00 00 00 04 00 00 00  
  backtrace:
[] kmemleak_alloc_recursive include/linux/kmemleak.h:42 
[inline]
[] slab_post_alloc_hook mm/slab.h:766 [inline]
[] slab_alloc_node mm/slub.c:3478 [inline]
[] __kmem_cache_alloc_node+0x2dd/0x3f0 mm/slub.c:3517
[] kmalloc_trace+0x25/0x90 mm/slab_common.c:1098
[] kmalloc include/linux/slab.h:600 [inline]
[] kzalloc include/linux/slab.h:721 [inline]
[] get_sg_table.isra.0+0x2a/0xe0 
drivers/dma-buf/udmabuf.c:93
[] begin_cpu_udmabuf+0x63/0xa0 
drivers/dma-buf/udmabuf.c:156
[] dma_buf_begin_cpu_access+0x3b/0xc0 
drivers/dma-buf/dma-buf.c:1402
[] dma_buf_ioctl+0x550/0x660 drivers/dma-buf/dma-buf.c:475
[] vfs_ioctl fs/ioctl.c:51 [inline]
[] __do_sys_ioctl fs/ioctl.c:871 [inline]
[] __se_sys_ioctl fs/ioctl.c:857 [inline]
[] __x64_sys_ioctl+0xf2/0x140 fs/ioctl.c:857
[] do_syscall_x64 arch/x86/entry/common.c:52 [inline]
[] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:83
[] entry_SYSCALL_64_after_hwframe+0x63/0x6b

BUG: memory leak
unreferenced object 0x88810b898b80 (size 128):
  comm "syz-executor111", pid 5038, jiffies 4294942820 (age 13.250s)
  hex dump (first 32 bytes):
c0 09 2a 04 00 ea ff ff 00 00 00 00 00 10 00 00  ..*.
00 70 82 0a 01 00 00 00 00 10 00 00 00 00 00 00  .p..
  backtrace:
[] kmemleak_alloc_recursive include/linux/kmemleak.h:42 
[inline]
[] slab_post_alloc_hook mm/slab.h:766 [inline]
[] slab_alloc_node mm/slub.c:3478 [inline]
[] __kmem_cache_alloc_node+0x2dd/0x3f0 mm/slub.c:3517
[] __do_kmalloc_node mm/slab_common.c:1006 [inline]
[] __kmalloc+0x4b/0x150 mm/slab_common.c:1020
[] kmalloc_array include/linux/slab.h:637 [inline]
[] sg_kmalloc lib/scatterlist.c:167 [inline]
[] get_next_sg lib/scatterlist.c:402 [inline]
[] sg_alloc_append_table_from_pages+0x35f/0x770 
lib/scatterlist.c:526
[] sg_alloc_table_from_pages_segment+0x8c/0x120 
lib/scatterlist.c:586
[] sg_alloc_table_from_pages 
include/linux/scatterlist.h:477 [inline]
[] get_sg_table.isra.0+0x5e/0xe0 
drivers/dma-buf/udmabuf.c:96
[] begin_cpu_udmabuf+0x63/0xa0 
drivers/dma-buf/udmabuf.c:156
[] dma_buf_begin_cpu_access+0x3b/0xc0 
drivers/dma-buf/dma-buf.c:1402
[] dma_buf_ioctl+0x550/0x660 drivers/dma-buf/dma-buf.c:475
[] vfs_ioctl fs/ioctl.c:51 [inline]
[] __do_sys_ioctl fs/ioctl.c:871 [inline]
[] __se_sys_ioctl fs/ioctl.c:857 [inline]
[] __x64_sys_ioctl+0xf2/0x140 fs/ioctl.c:857
[] do_syscall_x64 arch/x86/entry/common.c:52 [inline]
[] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:83
[] entry_SYSCALL_64_after_hwframe+0x63/0x6b



---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkal...@googlegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title

If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.

If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)

If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report

If you want to undo deduplication, reply with:
#syz undup


[PATCH 4/4] drm/nouveau/volt/gk20a: don't misuse kernel-doc comments

2023-12-31 Thread Randy Dunlap
Change kernel-doc "/**" comments to common "/*" comments to prevent
kernel-doc warnings:

gk20a.c:49: warning: This comment starts with '/**', but isn't a kernel-doc 
comment. Refer Documentation/doc-guide/kernel-doc.rst
 * cvb_mv = ((c2 * speedo / s_scale + c1) * speedo / s_scale + c0)
gk20a.c:49: warning: missing initial short description on line:
 * cvb_mv = ((c2 * speedo / s_scale + c1) * speedo / s_scale + c0)
gk20a.c:62: warning: This comment starts with '/**', but isn't a kernel-doc 
comment. Refer Documentation/doc-guide/kernel-doc.rst
 * cvb_t_mv =
gk20a.c:62: warning: missing initial short description on line:
 * cvb_t_mv =

Signed-off-by: Randy Dunlap 
Cc: Karol Herbst 
Cc: Lyude Paul 
Cc: Danilo Krummrich 
Cc: nouv...@lists.freedesktop.org
Cc: Maarten Lankhorst 
Cc: Maxime Ripard 
Cc: Thomas Zimmermann 
---
 drivers/gpu/drm/nouveau/nvkm/subdev/volt/gk20a.c |4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff -- a/drivers/gpu/drm/nouveau/nvkm/subdev/volt/gk20a.c 
b/drivers/gpu/drm/nouveau/nvkm/subdev/volt/gk20a.c
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/volt/gk20a.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/volt/gk20a.c
@@ -45,7 +45,7 @@ static const struct cvb_coef gk20a_cvb_c
/* 852 */ { 1608418, -21643, -269, 0,763,  -48},
 };
 
-/**
+/*
  * cvb_mv = ((c2 * speedo / s_scale + c1) * speedo / s_scale + c0)
  */
 static inline int
@@ -58,7 +58,7 @@ gk20a_volt_get_cvb_voltage(int speedo, i
return mv;
 }
 
-/**
+/*
  * cvb_t_mv =
  * ((c2 * speedo / s_scale + c1) * speedo / s_scale + c0) +
  * ((c3 * speedo / s_scale + c4 + c5 * T / t_scale) * T / t_scale)


[PATCH 2/4] drm/nouveau: don't misuse kernel-doc comments

2023-12-31 Thread Randy Dunlap
Change kernel-doc "/**" comments to common "/*" comments to prevent
kernel-doc warnings:

nouveau_ioc32.c:2: warning: Cannot understand  * \file mga_ioc32.c
 on line 2 - I thought it was a doc line
nouveau_ioc32.c:52: warning: Function parameter or member 'filp' not described 
in 'nouveau_compat_ioctl'
nouveau_ioc32.c:52: warning: Function parameter or member 'cmd' not described 
in 'nouveau_compat_ioctl'
nouveau_ioc32.c:52: warning: Function parameter or member 'arg' not described 
in 'nouveau_compat_ioctl'
nouveau_ioc32.c:52: warning: expecting prototype for Called whenever a 32-bit 
process running under a 64(). Prototype was for nouveau_compat_ioctl() instead

Signed-off-by: Randy Dunlap 
Cc: Karol Herbst 
Cc: Lyude Paul 
Cc: Danilo Krummrich 
Cc: nouv...@lists.freedesktop.org
Cc: Maarten Lankhorst 
Cc: Maxime Ripard 
Cc: Thomas Zimmermann 
---
 drivers/gpu/drm/nouveau/nouveau_ioc32.c |4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff -- a/drivers/gpu/drm/nouveau/nouveau_ioc32.c 
b/drivers/gpu/drm/nouveau/nouveau_ioc32.c
--- a/drivers/gpu/drm/nouveau/nouveau_ioc32.c
+++ b/drivers/gpu/drm/nouveau/nouveau_ioc32.c
@@ -1,4 +1,4 @@
-/**
+/*
  * \file mga_ioc32.c
  *
  * 32-bit ioctl compatibility routines for the MGA DRM.
@@ -38,7 +38,7 @@
 
 #include "nouveau_ioctl.h"
 
-/**
+/*
  * Called whenever a 32-bit process running under a 64-bit kernel
  * performs an ioctl on /dev/dri/card.
  *


[PATCH 3/4] drm/nouveau/gr/gf100: don't misuse kernel-doc comments

2023-12-31 Thread Randy Dunlap
Change kernel-doc "/**" comments to common "/*" comments to prevent
kernel-doc warnings:

gf100.c:1044: warning: This comment starts with '/**', but isn't a kernel-doc 
comment. Refer Documentation/doc-guide/kernel-doc.rst
 * Wait until GR goes idle. GR is considered idle if it is disabled by the
gf100.c:1044: warning: missing initial short description on line:
 * Wait until GR goes idle. GR is considered idle if it is disabled by the

Signed-off-by: Randy Dunlap 
Cc: Karol Herbst 
Cc: Lyude Paul 
Cc: Danilo Krummrich 
Cc: nouv...@lists.freedesktop.org
Cc: Maarten Lankhorst 
Cc: Maxime Ripard 
Cc: Thomas Zimmermann 
---
 drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c |2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c 
b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
@@ -1040,7 +1040,7 @@ gf100_gr_zbc_init(struct gf100_gr *gr)
}
 }
 
-/**
+/*
  * Wait until GR goes idle. GR is considered idle if it is disabled by the
  * MC (0x200) register, or GR is not busy and a context switch is not in
  * progress.


[PATCH 1/4] drm/nouveau/disp: don't misuse kernel-doc comments

2023-12-31 Thread Randy Dunlap
Change kernel-doc "/**" comments to common "/*" comments to prevent
kernel-doc warnings:

crtc.c:453: warning: This comment starts with '/**', but isn't a kernel-doc 
comment. Refer Documentation/doc-guide/kernel-doc.rst
 * Sets up registers for the given mode/adjusted_mode pair.
crtc.c:453: warning: missing initial short description on line:
 * Sets up registers for the given mode/adjusted_mode pair.
crtc.c:629: warning: This comment starts with '/**', but isn't a kernel-doc 
comment. Refer Documentation/doc-guide/kernel-doc.rst
 * Sets up registers for the given mode/adjusted_mode pair.
crtc.c:629: warning: missing initial short description on line:
 * Sets up registers for the given mode/adjusted_mode pair.

Signed-off-by: Randy Dunlap 
Cc: Karol Herbst 
Cc: Lyude Paul 
Cc: Danilo Krummrich 
Cc: nouv...@lists.freedesktop.org
Cc: Maarten Lankhorst 
Cc: Maxime Ripard 
Cc: Thomas Zimmermann 
---
 drivers/gpu/drm/nouveau/dispnv04/crtc.c |4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff -- a/drivers/gpu/drm/nouveau/dispnv04/crtc.c 
b/drivers/gpu/drm/nouveau/dispnv04/crtc.c
--- a/drivers/gpu/drm/nouveau/dispnv04/crtc.c
+++ b/drivers/gpu/drm/nouveau/dispnv04/crtc.c
@@ -449,7 +449,7 @@ nv_crtc_mode_set_vga(struct drm_crtc *cr
regp->Attribute[NV_CIO_AR_CSEL_INDEX] = 0x00;
 }
 
-/**
+/*
  * Sets up registers for the given mode/adjusted_mode pair.
  *
  * The clocks, CRTCs and outputs attached to this CRTC must be off.
@@ -625,7 +625,7 @@ nv_crtc_swap_fbs(struct drm_crtc *crtc,
return ret;
 }
 
-/**
+/*
  * Sets up registers for the given mode/adjusted_mode pair.
  *
  * The clocks, CRTCs and outputs attached to this CRTC must be off.


[PATCH] drm/amdkfd: fixes for HMM mem allocation

2023-12-31 Thread Dafna Hirschfeld
Few fixes to amdkfd and the doc of
devm_request_free_mem_region.

Signed-off-by: Dafna Hirschfeld 
---
 drivers/gpu/drm/amd/amdkfd/kfd_migrate.c | 6 +++---
 kernel/resource.c| 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c 
b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
index 6c25dab051d5..b8680e0753ca 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
@@ -1021,7 +1021,7 @@ int kgd2kfd_init_zone_device(struct amdgpu_device *adev)
} else {
res = devm_request_free_mem_region(adev->dev, _resource, 
size);
if (IS_ERR(res))
-   return -ENOMEM;
+   return PTR_ERR(res);
pgmap->range.start = res->start;
pgmap->range.end = res->end;
pgmap->type = MEMORY_DEVICE_PRIVATE;
@@ -1037,10 +1037,10 @@ int kgd2kfd_init_zone_device(struct amdgpu_device *adev)
r = devm_memremap_pages(adev->dev, pgmap);
if (IS_ERR(r)) {
pr_err("failed to register HMM device memory\n");
-   /* Disable SVM support capability */
-   pgmap->type = 0;
if (pgmap->type == MEMORY_DEVICE_PRIVATE)
devm_release_mem_region(adev->dev, res->start, 
resource_size(res));
+   /* Disable SVM support capability */
+   pgmap->type = 0;
return PTR_ERR(r);
}
 
diff --git a/kernel/resource.c b/kernel/resource.c
index 866ef3663a0b..fe890b874606 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -1905,8 +1905,8 @@ get_free_mem_region(struct device *dev, struct resource 
*base,
  * devm_request_free_mem_region - find free region for device private memory
  *
  * @dev: device struct to bind the resource to
- * @size: size in bytes of the device memory to add
  * @base: resource tree to look in
+ * @size: size in bytes of the device memory to add
  *
  * This function tries to find an empty range of physical address big enough to
  * contain the new resource, so that it can later be hotplugged as ZONE_DEVICE
-- 
2.34.1



Re: [PATCH 4/5] clk: sunxi-ng: a64: Add constraints on PLL-VIDEO0's n/m ratio

2023-12-31 Thread Frank Oltmanns


On 2023-12-19 at 17:54:19 +0100, Jernej Škrabec  
wrote:
> Dne ponedeljek, 18. december 2023 ob 14:35:22 CET je Frank Oltmanns 
> napisal(a):
>> The Allwinner A64 manual lists the following constraint for the
>> PLL-VIDEO0 clock: 8 <= N/M <= 25
>>
>> Use this constraint.
>>
>> Signed-off-by: Frank Oltmanns 
>> ---
>>  drivers/clk/sunxi-ng/ccu-sun50i-a64.c | 8 ++--
>>  1 file changed, 6 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/clk/sunxi-ng/ccu-sun50i-a64.c 
>> b/drivers/clk/sunxi-ng/ccu-sun50i-a64.c
>> index c034ac027d1c..75d839da446c 100644
>> --- a/drivers/clk/sunxi-ng/ccu-sun50i-a64.c
>> +++ b/drivers/clk/sunxi-ng/ccu-sun50i-a64.c
>> @@ -68,7 +68,8 @@ static SUNXI_CCU_NM_WITH_SDM_GATE_LOCK(pll_audio_base_clk, 
>> "pll-audio-base",
>> BIT(28), /* lock */
>> CLK_SET_RATE_UNGATE);
>>
>> -static SUNXI_CCU_NM_WITH_FRAC_GATE_LOCK_MIN_MAX_CLOSEST(pll_video0_clk, 
>> "pll-video0",
>> +static 
>> SUNXI_CCU_NM_WITH_FRAC_GATE_LOCK_MIN_MAX_FEAT_NM_RATIO(pll_video0_clk,
>> +"pll-video0",
>>  "osc24M", 0x010,
>>  19200,  /* Minimum rate 
>> */
>>  100800, /* Maximum rate 
>> */

I just realized that adding the whole ratio limits for ccu_nm is
superfluous as you could just as well express them in for of a minimum
and maximum range:
Since 8 <= N/M <= 25 and parent_rate = 24 MHz, therefore
  192 MHz <= rate <= 600 MHz.

These absolute limits are also listed in Allwinner's A64 manual.

BUT, here the upper limit was raised to 1008 MHz:
5de39acaf34604bd04834f092479cf4dcc946dd "clk: sunxi-ng: a64: Add max.
rate constraint to video PLL"

With this upper limit the ratio limitation is effectively:
8 <= N/M <= 42

Icenowy Zheng (added to CC) had the reasonable explanation that this was
used in the BSP kernel, so we should probably stick to that and ditch
the two PLL-VIDEO0 related patches. What are your thoughts on that?

>> @@ -80,7 +81,10 @@ static 
>> SUNXI_CCU_NM_WITH_FRAC_GATE_LOCK_MIN_MAX_CLOSEST(pll_video0_clk, "pll-vid
>>  29700,  /* frac rate 1 
>> */
>>  BIT(31),/* gate */
>>  BIT(28),/* lock */
>> -CLK_SET_RATE_UNGATE);
>> +CLK_SET_RATE_UNGATE,
>> +CCU_FEATURE_FRACTIONAL |
>> +CCU_FEATURE_CLOSEST_RATE,
>
> Above flags are unrelated change, put them in new patch if needed.
>
> Best regards,
> Jernej
>
>> +8, 25); /* min/max nm 
>> ratio */
>>
>>  static SUNXI_CCU_NM_WITH_FRAC_GATE_LOCK(pll_ve_clk, "pll-ve",
>>  "osc24M", 0x018,
>>
>>