V4L/DVB (4784): [saa7146_i2c] short_delay mode fixed for fast machines

TT DVB-C 2300 runs at 137 kHz I2C speed. short_delay mode did not work
reliably on fast machines with that speed. Increased max loop count from
20 to 50. Moved dummy access out of the loop.
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/common/saa7146_i2c.c

@@ -217,11 +217,9 @@ static int saa7146_i2c_writeout(struct saa7146_dev *dev, u32* dword, int short_d
 		}
 		/* wait until we get a transfer done or error */
 		timeout = jiffies + HZ/100 + 1; /* 10ms */
-		while(1) {
-			/**
-			 *  first read usually delivers bogus results...
-			 */
+		/* first read usually delivers bogus results... */
 		saa7146_i2c_status(dev);
+		while(1) {
 			status = saa7146_i2c_status(dev);
 			if ((status & 0x3) != 1)
 				break;
@@ -232,7 +230,7 @@ static int saa7146_i2c_writeout(struct saa7146_dev *dev, u32* dword, int short_d
 				DEB_I2C(("saa7146_i2c_writeout: timed out waiting for end of xfer\n"));
 				return -EIO;
 			}
-			if ((++trial < 20) && short_delay)
+			if (++trial < 50 && short_delay)
 				udelay(10);
 			else
 				msleep(1);