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| author | Adrian Bunk <bunk@kernel.org> | 2007-11-14 16:59:02 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-11-14 18:45:38 -0800 |
| commit | a9e60e5c3c4721dd216047e4c58c4eb89789f519 (patch) | |
| tree | 889d05f1bcee8050500274f6ce695d038ee8c744 | |
| parent | 43054412db5e5b3eda1eff6c2245ff4257560340 (diff) | |
| download | linux-3.10-a9e60e5c3c4721dd216047e4c58c4eb89789f519.tar.gz linux-3.10-a9e60e5c3c4721dd216047e4c58c4eb89789f519.tar.bz2 linux-3.10-a9e60e5c3c4721dd216047e4c58c4eb89789f519.zip | |
video/sis/: fix negative array index
This patch fixes the possible usage of a negative value as an array
index spotted by the Coverity checker.
sisfb_validate_mode() could return a negative error code and we must check for
that prior to using its return value as an array index.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/video/sis/sis_main.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/video/sis/sis_main.c b/drivers/video/sis/sis_main.c index bc7d2368373..37bd24b8d83 100644 --- a/drivers/video/sis/sis_main.c +++ b/drivers/video/sis/sis_main.c @@ -1248,7 +1248,6 @@ sisfb_do_set_var(struct fb_var_screeninfo *var, int isactive, struct fb_info *in if(found_mode) { ivideo->sisfb_mode_idx = sisfb_validate_mode(ivideo, ivideo->sisfb_mode_idx, ivideo->currentvbflags); - ivideo->mode_no = sisbios_mode[ivideo->sisfb_mode_idx].mode_no[ivideo->mni]; } else { ivideo->sisfb_mode_idx = -1; } @@ -1260,6 +1259,8 @@ sisfb_do_set_var(struct fb_var_screeninfo *var, int isactive, struct fb_info *in return -EINVAL; } + ivideo->mode_no = sisbios_mode[ivideo->sisfb_mode_idx].mode_no[ivideo->mni]; + if(sisfb_search_refresh_rate(ivideo, ivideo->refresh_rate, ivideo->sisfb_mode_idx) == 0) { ivideo->rate_idx = sisbios_mode[ivideo->sisfb_mode_idx].rate_idx; ivideo->refresh_rate = 60; |