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authorLothar Waßmann <LW@KARO-electronics.de>2012-12-25 15:58:37 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-01-07 12:27:51 -0800
commit4d27b2ca154eff58f4d7f34e4cd374c1070a56fc (patch)
tree7e24151297e636d8d73f79b93658a07f17bd9ee9 /drivers/staging/imx-drm
parent412fc87093df7d40d187f6f167524221ae8080b2 (diff)
downloadblackbird-op-linux-4d27b2ca154eff58f4d7f34e4cd374c1070a56fc.tar.gz
blackbird-op-linux-4d27b2ca154eff58f4d7f34e4cd374c1070a56fc.zip
staging: drm/imx: check return value of ipu_reset()
ipu_reset() can fail with a timeout. Check the return value and act appropriately. Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/imx-drm')
-rw-r--r--drivers/staging/imx-drm/ipu-v3/ipu-common.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/staging/imx-drm/ipu-v3/ipu-common.c b/drivers/staging/imx-drm/ipu-v3/ipu-common.c
index 677e665ca86d..f7059cddd7fd 100644
--- a/drivers/staging/imx-drm/ipu-v3/ipu-common.c
+++ b/drivers/staging/imx-drm/ipu-v3/ipu-common.c
@@ -1104,7 +1104,9 @@ static int ipu_probe(struct platform_device *pdev)
if (ret)
goto out_failed_irq;
- ipu_reset(ipu);
+ ret = ipu_reset(ipu);
+ if (ret)
+ goto out_failed_reset;
/* Set MCU_T to divide MCU access window into 2 */
ipu_cm_write(ipu, 0x00400000L | (IPU_MCU_T_DEFAULT << 18),
@@ -1129,6 +1131,7 @@ failed_add_clients:
ipu_submodules_exit(ipu);
failed_submodules_init:
ipu_irq_exit(ipu);
+out_failed_reset:
out_failed_irq:
clk_disable_unprepare(ipu->clk);
failed_clk_get:
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