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media: em28xx - add error handling for KWORLD dvb_attach failures

Message ID 1404938183-29535-1-git-send-email-shuah.kh@samsung.com (mailing list archive)
State New, archived
Headers show

Commit Message

Shuah Khan July 9, 2014, 8:36 p.m. UTC
Add error hanlding when EM2870_BOARD_KWORLD_A340 dvb_attach()
for fe and tuner fail in em28xx_dvb_init().

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
---
 drivers/media/usb/em28xx/em28xx-dvb.c |   14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

Comments

Antti Palosaari July 12, 2014, 8:19 p.m. UTC | #1
Looks correct!
All the other devices, excluding those few PCTV ones I have added, has 
that same bug... Deadlocks if tuner attach fails.

Reviewed-by: Antti Palosaari <crope@iki.fi>

regards
Antti


On 07/09/2014 11:36 PM, Shuah Khan wrote:
> Add error hanlding when EM2870_BOARD_KWORLD_A340 dvb_attach()
> for fe and tuner fail in em28xx_dvb_init().
>
> Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
> ---
>   drivers/media/usb/em28xx/em28xx-dvb.c |   14 +++++++++++---
>   1 file changed, 11 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/media/usb/em28xx/em28xx-dvb.c b/drivers/media/usb/em28xx/em28xx-dvb.c
> index d381861..8314f51 100644
> --- a/drivers/media/usb/em28xx/em28xx-dvb.c
> +++ b/drivers/media/usb/em28xx/em28xx-dvb.c
> @@ -1213,9 +1213,17 @@ static int em28xx_dvb_init(struct em28xx *dev)
>   		dvb->fe[0] = dvb_attach(lgdt3305_attach,
>   					   &em2870_lgdt3304_dev,
>   					   &dev->i2c_adap[dev->def_i2c_bus]);
> -		if (dvb->fe[0] != NULL)
> -			dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
> -				   &dev->i2c_adap[dev->def_i2c_bus], &kworld_a340_config);
> +		if (!dvb->fe[0]) {
> +			result = -EINVAL;
> +			goto out_free;
> +		}
> +		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
> +			&dev->i2c_adap[dev->def_i2c_bus],
> +			&kworld_a340_config)) {
> +				dvb_frontend_detach(dvb->fe[0]);
> +				result = -EINVAL;
> +				goto out_free;
> +		}
>   		break;
>   	case EM28174_BOARD_PCTV_290E:
>   		/* set default GPIO0 for LNA, used if GPIOLIB is undefined */
>
diff mbox

Patch

diff --git a/drivers/media/usb/em28xx/em28xx-dvb.c b/drivers/media/usb/em28xx/em28xx-dvb.c
index d381861..8314f51 100644
--- a/drivers/media/usb/em28xx/em28xx-dvb.c
+++ b/drivers/media/usb/em28xx/em28xx-dvb.c
@@ -1213,9 +1213,17 @@  static int em28xx_dvb_init(struct em28xx *dev)
 		dvb->fe[0] = dvb_attach(lgdt3305_attach,
 					   &em2870_lgdt3304_dev,
 					   &dev->i2c_adap[dev->def_i2c_bus]);
-		if (dvb->fe[0] != NULL)
-			dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
-				   &dev->i2c_adap[dev->def_i2c_bus], &kworld_a340_config);
+		if (!dvb->fe[0]) {
+			result = -EINVAL;
+			goto out_free;
+		}
+		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
+			&dev->i2c_adap[dev->def_i2c_bus],
+			&kworld_a340_config)) {
+				dvb_frontend_detach(dvb->fe[0]);
+				result = -EINVAL;
+				goto out_free;
+		}
 		break;
 	case EM28174_BOARD_PCTV_290E:
 		/* set default GPIO0 for LNA, used if GPIOLIB is undefined */