video: exynos_dp: check the only INTERLANE_ALIGN_DONE bit during Link Training

The only INTERLANE_ALIGN_DONE bit should be checked for channel equalization
during Link Training. Previously, the other bits such as LINK_STATUS_UPDATED
were checked, and channel equalization procedure was repeated unnecessarily.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

diff --git a/drivers/video/exynos/exynos_dp_core.c b/drivers/video/exynos/exynos_dp_core.c
index bf55e5192f9bcec7c725385236ee34e23bb99156..0f3a64baecc940adff2352e2b840eae8efd45aac 100644 (file)
--- a/drivers/video/exynos/exynos_dp_core.c
+++ b/drivers/video/exynos/exynos_dp_core.c
@@ -336,7 +336,7 @@ static int exynos_dp_channel_eq_ok(u8 link_status[6], int lane_count)
        u8 lane_status;
 
        lane_align = link_status[2];
-       if ((lane_align == DPCD_INTERLANE_ALIGN_DONE) == 0)
+       if ((lane_align & DPCD_INTERLANE_ALIGN_DONE) == 0)
                return -EINVAL;
 
        for (lane = 0; lane < lane_count; lane++) {