diff options
| author | Jingoo Han <jg1.han@samsung.com> | 2012-04-04 16:00:00 +0900 |
|---|---|---|
| committer | Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | 2012-04-16 04:18:38 +0000 |
| commit | 8f802da33a842bc9e511d2a9c8259fbee8a6d17e (patch) | |
| tree | 735cb5dfbf57a4bd994b36411aa9d1bbbdc19db6 /drivers/video/exynos | |
| parent | b5cfeed6cf90a4bb619b7ac640ba1a6dd002364d (diff) | |
| download | linux-8f802da33a842bc9e511d2a9c8259fbee8a6d17e.tar.bz2 | |
video: exynos_dp: replace char pointer with char array for adjust_request variable
The char pointer for adjust_request variable is replaced with char array
to fix possible null pointer dereference when clock recovery is failed.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Diffstat (limited to 'drivers/video/exynos')
| -rw-r--r-- | drivers/video/exynos/exynos_dp_core.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/video/exynos/exynos_dp_core.c b/drivers/video/exynos/exynos_dp_core.c index 2a4481cf260c..6e9f3ce2a4b1 100644 --- a/drivers/video/exynos/exynos_dp_core.c +++ b/drivers/video/exynos/exynos_dp_core.c @@ -478,7 +478,7 @@ static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp) int lane_count; u8 buf[5]; - u8 *adjust_request; + u8 adjust_request[2]; u8 voltage_swing; u8 pre_emphasis; u8 training_lane; @@ -493,8 +493,8 @@ static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp) /* set training pattern 2 for EQ */ exynos_dp_set_training_pattern(dp, TRAINING_PTN2); - adjust_request = link_status + (DPCD_ADDR_ADJUST_REQUEST_LANE0_1 - - DPCD_ADDR_LANE0_1_STATUS); + adjust_request[0] = link_status[4]; + adjust_request[1] = link_status[5]; exynos_dp_get_adjust_train(dp, adjust_request); @@ -566,7 +566,7 @@ static int exynos_dp_process_equalizer_training(struct exynos_dp_device *dp) u8 buf[5]; u32 reg; - u8 *adjust_request; + u8 adjust_request[2]; udelay(400); @@ -575,8 +575,8 @@ static int exynos_dp_process_equalizer_training(struct exynos_dp_device *dp) lane_count = dp->link_train.lane_count; if (exynos_dp_clock_recovery_ok(link_status, lane_count) == 0) { - adjust_request = link_status + (DPCD_ADDR_ADJUST_REQUEST_LANE0_1 - - DPCD_ADDR_LANE0_1_STATUS); + adjust_request[0] = link_status[4]; + adjust_request[1] = link_status[5]; if (exynos_dp_channel_eq_ok(link_status, lane_count) == 0) { /* traing pattern Set to Normal */ |