Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:
 "This is the first part of the media patches for v3.6.

  This patch series contain:
   - new DVB frontend: rtl2832
   - new video drivers: adv7393
   - some unused files got removed
   - a selection API cleanup between V4L2 and V4L2 subdev API's
   - a major redesign at v4l-ioctl2, in order to clean it up
   - several driver fixes and improvements."

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (174 commits)
  v4l: Export v4l2-common.h in include/linux/Kbuild
  media: Revert "[media] Terratec Cinergy S2 USB HD Rev.2"
  [media] media: Use pr_info not homegrown pr_reg macro
  [media] Terratec Cinergy S2 USB HD Rev.2
  [media] v4l: Correct conflicting V4L2 subdev selection API documentation
  [media] Feature removal: V4L2 selections API target and flag definitions
  [media] v4l: Unify selection flags documentation
  [media] v4l: Unify selection flags
  [media] v4l: Common documentation for selection targets
  [media] v4l: Unify selection targets across V4L2 and V4L2 subdev interfaces
  [media] v4l: Remove "_ACTUAL" from subdev selection API target definition names
  [media] V4L: Remove "_ACTIVE" from the selection target name definitions
  [media] media: dvb-usb: print mac address via native %pM
  [media] s5p-tv: Use module_i2c_driver in sii9234_drv.c file
  [media] media: gpio-ir-recv: add allowed_protos for platform data
  [media] s5p-jpeg: Use module_platform_driver in jpeg-core.c file
  [media] saa7134: fix spelling of detach in label
  [media] cx88-blackbird: replace ioctl by unlocked_ioctl
  [media] cx88: don't use current_norm
  [media] cx88: fix a number of v4l2-compliance violations
  ...

1 files changed, 33 insertions, 11 deletions

diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 26488aa893d5..2efa56c5ff2c 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -1312,6 +1312,37 @@ module_exit(i2c_exit);
  */
 
 /**
+ * __i2c_transfer - unlocked flavor of i2c_transfer
+ * @adap: Handle to I2C bus
+ * @msgs: One or more messages to execute before STOP is issued to
+ *      terminate the operation; each message begins with a START.
+ * @num: Number of messages to be executed.
+ *
+ * Returns negative errno, else the number of messages executed.
+ *
+ * Adapter lock must be held when calling this function. No debug logging
+ * takes place. adap->algo->master_xfer existence isn't checked.
+ */
+int __i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
+{
+        unsigned long orig_jiffies;
+        int ret, try;
+
+        /* Retry automatically on arbitration loss */
+        orig_jiffies = jiffies;
+        for (ret = 0, try = 0; try <= adap->retries; try++) {
+                ret = adap->algo->master_xfer(adap, msgs, num);
+                if (ret != -EAGAIN)
+                        break;
+                if (time_after(jiffies, orig_jiffies + adap->timeout))
+                        break;
+        }
+
+        return ret;
+}
+EXPORT_SYMBOL(__i2c_transfer);
+
+/**
  * i2c_transfer - execute a single or combined I2C message
  * @adap: Handle to I2C bus
  * @msgs: One or more messages to execute before STOP is issued to
@@ -1325,8 +1356,7 @@ module_exit(i2c_exit);
  */
 int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
 {
-        unsigned long orig_jiffies;
-        int ret, try;
+        int ret;
 
         /* REVISIT the fault reporting model here is weak:
          *
@@ -1364,15 +1394,7 @@ int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
                         i2c_lock_adapter(adap);
                 }
 
-                /* Retry automatically on arbitration loss */
-                orig_jiffies = jiffies;
-                for (ret = 0, try = 0; try <= adap->retries; try++) {
-                        ret = adap->algo->master_xfer(adap, msgs, num);
-                        if (ret != -EAGAIN)
-                                break;
-                        if (time_after(jiffies, orig_jiffies + adap->timeout))
-                                break;
-                }
+                ret = __i2c_transfer(adap, msgs, num);
                 i2c_unlock_adapter(adap);
 
                 return ret;