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authorJingoo Han <jg1.han@samsung.com>2012-04-04 16:00:00 +0900
committerFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>2012-04-16 04:18:38 +0000
commit8f802da33a842bc9e511d2a9c8259fbee8a6d17e (patch)
tree735cb5dfbf57a4bd994b36411aa9d1bbbdc19db6 /drivers/video/exynos
parentb5cfeed6cf90a4bb619b7ac640ba1a6dd002364d (diff)
downloadblackbird-op-linux-8f802da33a842bc9e511d2a9c8259fbee8a6d17e.tar.gz
blackbird-op-linux-8f802da33a842bc9e511d2a9c8259fbee8a6d17e.zip
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.c12
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 */
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