[media] rtl2832: print reg number on error case

It is hard to debug possible I2C failures without knowing the
possible register itself. Add register number to error printing.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/dvb-frontends/rtl2832.c b/drivers/media/dvb-frontends/rtl2832.c
index 78b87b2..60250cc 100644 (file)
--- a/drivers/media/dvb-frontends/rtl2832.c
+++ b/drivers/media/dvb-frontends/rtl2832.c
@@ -976,7 +976,8 @@ static int rtl2832_regmap_read(void *context, const void *reg_buf,
 
        ret = __i2c_transfer(client->adapter, msg, 2);
        if (ret != 2) {
-               dev_warn(&client->dev, "i2c reg read failed %d\n", ret);
+               dev_warn(&client->dev, "i2c reg read failed %d reg %02x\n",
+                        ret, *(u8 *)reg_buf);
                if (ret >= 0)
                        ret = -EREMOTEIO;
                return ret;
@@ -999,7 +1000,8 @@ static int rtl2832_regmap_write(void *context, const void *data, size_t count)
 
        ret = __i2c_transfer(client->adapter, msg, 1);
        if (ret != 1) {
-               dev_warn(&client->dev, "i2c reg write failed %d\n", ret);
+               dev_warn(&client->dev, "i2c reg write failed %d reg %02x\n",
+                        ret, *(u8 *)data);
                if (ret >= 0)
                        ret = -EREMOTEIO;
                return ret;
@@ -1028,7 +1030,8 @@ static int rtl2832_regmap_gather_write(void *context, const void *reg,
 
        ret = __i2c_transfer(client->adapter, msg, 1);
        if (ret != 1) {
-               dev_warn(&client->dev, "i2c reg write failed %d\n", ret);
+               dev_warn(&client->dev, "i2c reg write failed %d reg %02x\n",
+                        ret, *(u8 const *)reg);
                if (ret >= 0)
                        ret = -EREMOTEIO;
                return ret;