Re: [GIT PULL] exynos-drm-fixes

[Inki Dae <daeinki@gmail.com>]

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Hi Dave,

2023년 11월 24일 (금) 오전 10:14, Dave Airlie <airlied@gmail.com>님이 작성:

> On Tue, 21 Nov 2023 at 09:00, Inki Dae <inki.dae@samsung.com> wrote:
> >
> > Hi Dave and Daniel,
> >
> >    Two fixups - fixing a potential error pointer dereference and wrong
> >    error checking.
> Hi Inki,
>
> This fails to build on arm32, and it seems one of the fixes is wrong
>
> [airlied@dreadlord drm-fixes]$ make ARCH=arm
> CROSS_COMPILE=arm-linux-gnu- O=../../arm-build-fixes/  -j16
> make[1]: Entering directory '/home/airlied/devel/kernel/arm-build-fixes'
>   GEN     Makefile
>       CALL
> /home/airlied/devel/kernel/dim/drm-fixes/scripts/checksyscalls.sh
>   CC [M]  drivers/gpu/drm/exynos/exynos_drm_dma.o
>
> /home/airlied/devel/kernel/dim/drm-fixes/drivers/gpu/drm/exynos/exynos_drm_dma.c:
> In function ‘exynos_drm_register_dma’:
>
> /home/airlied/devel/kernel/dim/drm-fixes/drivers/gpu/drm/exynos/exynos_drm_dma.c:119:40:
> error: passing argument 1 of ‘PTR_ERR’ makes pointer from integer
> without a cast [-Werror=int-conversion]
>   119 |                         return PTR_ERR(-ENODEV);
> In file included from
> /home/airlied/devel/kernel/dim/drm-fixes/include/linux/string.h:9,
>                  from
> /home/airlied/devel/kernel/dim/drm-fixes/include/linux/dma-mapping.h:7,
>                  from
> /home/airlied/devel/kernel/dim/drm-fixes/include/linux/dma-map-ops.h:9,
>                  from
>
> /home/airlied/devel/kernel/dim/drm-fixes/drivers/gpu/drm/exynos/exynos_drm_dma.c:7:
> /home/airlied/devel/kernel/dim/drm-fixes/include/linux/err.h:49:61:
> note: expected ‘const void *’ but argument is of type ‘int’
>    49 | static inline long __must_check PTR_ERR(__force const void *ptr)
>       |                                                 ~~~~~~~~~~~~^~~
> cc1: all warnings being treated as errors
>
> I think it should just be return -ENODEV, since the function returns an
> int.
>
> Please fix it up and resend.
>

Really sorry for this. Will resend after fixing it.

Thanks,
Inki Dae


> Thanks,
> Dave.
>
>
>
> >
> >    Ps. regarding the first patch, I had sent a GIT-PULL[1] but it seems
> >        you missed.
> >    [1]
> https://lore.kernel.org/dri-devel/20231006040950.4397-1-inki.dae@samsung.com/T/#u
> >
> >    Please kindly let me know if there is any problem.
> >
> > Thanks,
> > Inki Dae
> >
> > The following changes since commit
> 98b1cc82c4affc16f5598d4fa14b1858671b2263:
> >
> >   Linux 6.7-rc2 (2023-11-19 15:02:14 -0800)
> >
> > are available in the Git repository at:
> >
> >   git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos
> tags/exynos-drm-fixes-for-v6.7-rc3
> >
> > for you to fetch changes up to a30ba4bd7cdb5726d86a557c5df8df71c7bc7fad:
> >
> >   drm/exynos: fix a wrong error checking (2023-11-21 07:41:11 +0900)
> >
> > ----------------------------------------------------------------
> > Two fixups
> > - Fix a potential error pointer dereference by checking the return value
> >   of exynos_drm_crtc_get_by_type() function before accessing to crtc
> >   object.
> > - Fix a wrong error checking in exynos_drm_dma.c modules, which was
> reported
> >   by Dan[1]
> >
> > [1]
> https://lore.kernel.org/all/33e52277-1349-472b-a55b-ab5c3462bfcf@moroto.mountain/
> >
> > ----------------------------------------------------------------
> > Inki Dae (1):
> >       drm/exynos: fix a wrong error checking
> >
> > Xiang Yang (1):
> >       drm/exynos: fix a potential error pointer dereference
> >
> >  drivers/gpu/drm/exynos/exynos_drm_dma.c | 8 +++-----
> >  drivers/gpu/drm/exynos/exynos_hdmi.c    | 2 ++
> >  2 files changed, 5 insertions(+), 5 deletions(-)
>
>

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