diff mbox

[v2,12/31,media] r820t: Invert bits for read ops

Message ID 1366159362-3773-13-git-send-email-mchehab@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Mauro Carvalho Chehab April 17, 2013, 12:42 a.m. UTC 
On read, the bit order is inverted.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---
 drivers/media/tuners/r820t.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)
diff mbox

Patch

diff --git a/drivers/media/tuners/r820t.c b/drivers/media/tuners/r820t.c
index 48ff6bb..79ab2b7 100644
--- a/drivers/media/tuners/r820t.c
+++ b/drivers/media/tuners/r820t.c
@@ -35,8 +35,10 @@ 
 #include <linux/videodev2.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
-#include "tuner-i2c.h"
+#include <linux/bitrev.h>
 #include <asm/div64.h>
+
+#include "tuner-i2c.h"
 #include "r820t.h"
 
 /*
@@ -414,7 +416,7 @@  static int r820t_write_reg_mask(struct r820t_priv *priv, u8 reg, u8 val,
 
 static int r820_read(struct r820t_priv *priv, u8 reg, u8 *val, int len)
 {
-	int rc;
+	int rc, i;
 	u8 *p = &priv->buf[1];
 
 	priv->buf[0] = reg;
@@ -431,7 +433,8 @@  static int r820_read(struct r820t_priv *priv, u8 reg, u8 *val, int len)
 		  __func__, reg, len, len, p);
 
 	/* Copy data to the output buffer */
-	memcpy(val, p, len);
+	for (i = 0; i < len; i++)
+		val[i] = bitrev8(p[i]);
 
 	return 0;
 }