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fbdev/deferred-io: Test smem_start for I/O memory
authorThomas Zimmermann <tzimmermann@suse.de>
Fri, 19 Apr 2024 08:28:58 +0000 (10:28 +0200)
committerThomas Zimmermann <tzimmermann@suse.de>
Thu, 2 May 2024 09:33:14 +0000 (11:33 +0200)
commitdcaefc82395841fa15aa70a2c8841cda4f87125f
tree5d2e740a21d5a4bc678e5205aa4772cf9b1f6d2atree | snapshot
parentabc79a0e0a3e8e900db76e0f7b1c34c6f6c4c282commit | diff
fbdev/deferred-io: Test smem_start for I/O memory

Test smem_start before looking up pages from its value. Return
NULL if it is unset. This will result in a SIGBUS signal.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-6-tzimmermann@suse.de
drivers/video/fbdev/core/fb_defio.c diff | blob | blame | history
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