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H A D | ast_mode.c | b1def7fa Fri Dec 16 13:30:05 CST 2022 Thomas Zimmermann <tzimmermann@suse.de> drm/ast: Init iosys_map pointer as I/O memory for damage handling
Ast hardware scans out the primary plane from video memory, which is in I/O-memory space. Hence init the damage handler's iosys_map pointer as I/O memory.
Not all platforms support accessing I/O memory as system memory, although it's usually not a problem in ast's x86-based systems.
The error report is at [1].
Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com> Fixes: f2fa5a99ca81 ("drm/ast: Convert ast to SHMEM") Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Jocelyn Falempe <jfalempe@redhat.com> Cc: Dave Airlie <airlied@redhat.com> Cc: dri-devel@lists.freedesktop.org Link: https://lore.kernel.org/lkml/202212170111.eInM0unS-lkp@intel.com/T/#u # 1 Link: https://patchwork.freedesktop.org/patch/msgid/20221216193005.30280-1-tzimmermann@suse.de
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