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video: hgafb: fix potential NULL pointer dereference
authorKangjie Lu <kjlu@umn.edu>
Mon, 1 Apr 2019 15:46:58 +0000 (17:46 +0200)
committerBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Mon, 1 Apr 2019 15:46:58 +0000 (17:46 +0200)
commitd52c68732e00f8f3354c4c5471d41849af5336a2
tree8edf09c212e2ff769f36d345702bccc4c4ebbc17tree | snapshot
parent9ce98d2fc82e687e239cce9faee53c9338d8e447commit | diff
video: hgafb: fix potential NULL pointer dereference

When ioremap fails, hga_vram should not be dereferenced. The fix
check the failure to avoid NULL pointer dereference.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Cc: Aditya Pakki <pakki001@umn.edu>
Cc: Ferenc Bakonyi <fero@drama.obuda.kando.hu>
[b.zolnierkie: minor patch summary fixup]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
drivers/video/fbdev/hgafb.c diff | blob | history
Linux Kernel Source Tree.