mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 00:10:09 +00:00
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>
This commit is contained in:
parent
b0e999c955
commit
ec7f6aad57
1 changed files with 2 additions and 0 deletions
|
@ -285,6 +285,8 @@ static int hga_card_detect(void)
|
|||
hga_vram_len = 0x08000;
|
||||
|
||||
hga_vram = ioremap(0xb0000, hga_vram_len);
|
||||
if (!hga_vram)
|
||||
goto error;
|
||||
|
||||
if (request_region(0x3b0, 12, "hgafb"))
|
||||
release_io_ports = 1;
|
||||
|
|
Loading…
Reference in a new issue