Re: [PATCH 5.4 000/367] 5.4.257-rc1 review

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On 2023/9/21 20:08, Naresh Kamboju wrote:
On Wed, 20 Sept 2023 at 14:25, Greg Kroah-Hartman
<gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
This is the start of the stable review cycle for the 5.4.257 release.
There are 367 patches in this series, all will be posted as a response
to this one.  If anyone has any issues with these being applied, please
let me know.

Responses should be made by Fri, 22 Sep 2023 11:28:09 +0000.
Anything received after that time might be too late.

The whole patch series can be found in one patch at:
or in the git tree and branch at:
         git:// linux-5.4.y
and the diffstat can be found below.


greg k-h
Following build warnings noticed while building arm64 with allmodconfig
on stable-rc 5.4 with gcc-8 and gcc-12 toolchains.

Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>

drivers/gpu/drm/mediatek/mtk_drm_gem.c: In function 'mtk_drm_gem_prime_vmap':
drivers/gpu/drm/mediatek/mtk_drm_gem.c:273:10: warning: returning
'int' from a function with return type 'void *' makes pointer from
integer without a cast [-Wint-conversion]
    return -ENOMEM;

Well, this is easy to solve.
For the Linux-5.4 kernel, we should use "return -ERR_PTR(-ENOMEM)" instead of "return -ENOMEM".
Since, newer version kernel prefer to return error code instead of error pointer.
See below commit for more information.

commit <7e542ff8b463>  ("drm/mediatek: Use struct dma_buf_map in GEM vmap ops") commit <49a3f51dfeee> ("drm/gem: Use struct dma_buf_map in GEM vmap ops and convert GEM backends")


Following commit is causing this build warning.

drm/mediatek: Fix potential memory leak if vmap() fail
[ Upstream commit 379091e0f6d179d1a084c65de90fa44583b14a70 ]

Linaro LKFT

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