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[2/4] drm: exynos: mixer: fix using usleep() in atomic context

Message ID 1397487622-3577-3-git-send-email-t.stanislaws@samsung.com (mailing list archive)
State New, archived
Headers show

Commit Message

Tomasz Stanislawski April 14, 2014, 3 p.m. UTC
This patch fixes calling usleep_range() after taking reg_slock
using spin_lock_irqsave(). The mdelay() is used instead.
Waiting in atomic context is not the best idea in general.
Hopefully, waiting occurs only when Video Processor fails
to reset correctly.

Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_mixer.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index ce28881..e3306c8 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -615,7 +615,7 @@  static void vp_win_reset(struct mixer_context *ctx)
 		/* waiting until VP_SRESET_PROCESSING is 0 */
 		if (~vp_reg_read(res, VP_SRESET) & VP_SRESET_PROCESSING)
 			break;
-		usleep_range(10000, 12000);
+		mdelay(10);
 	}
 	WARN(tries == 0, "failed to reset Video Processor\n");
 }