From: Yuxi Sun <b36102@freescale.com>
Date: Thu, 12 Apr 2012 07:23:08 +0000 (+0800)
Subject: ENGR00179510 ipu capture: fix system hang when running capture
X-Git-Tag: v3.0.35-fsl_4.1.0~1355
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b3a74afe44aeb3f93f3de9ae33cc489843fc5788;p=karo-tx-linux.git

ENGR00179510 ipu capture: fix system hang when running capture

Add _ipu_get() and _ipu_put() when calling ipu_csi_get_sensor_protocol
function.

Signed-off-by: Yuxi Sun <b36102@freescale.com>
---

diff --git a/drivers/mxc/ipu3/ipu_capture.c b/drivers/mxc/ipu3/ipu_capture.c
index 2b818a0276a0..c4eac45a6152 100644
--- a/drivers/mxc/ipu3/ipu_capture.c
+++ b/drivers/mxc/ipu3/ipu_capture.c
@@ -215,9 +215,13 @@ EXPORT_SYMBOL(ipu_csi_init_interface);
  */
 int32_t ipu_csi_get_sensor_protocol(struct ipu_soc *ipu, uint32_t csi)
 {
-	return (ipu_csi_read(ipu, csi, CSI_SENS_CONF) &
+	int ret;
+	_ipu_get(ipu);
+	ret = (ipu_csi_read(ipu, csi, CSI_SENS_CONF) &
 		CSI_SENS_CONF_SENS_PRTCL_MASK) >>
 		CSI_SENS_CONF_SENS_PRTCL_SHIFT;
+	_ipu_put(ipu);
+	return ret;
 }
 EXPORT_SYMBOL(ipu_csi_get_sensor_protocol);