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path: root/drivers/media/usb/em28xx/em28xx-i2c.c
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Diffstat (limited to 'drivers/media/usb/em28xx/em28xx-i2c.c')
-rw-r--r--drivers/media/usb/em28xx/em28xx-i2c.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-i2c.c b/drivers/media/usb/em28xx/em28xx-i2c.c
index b58d4ebf6419..1048c1a23fb6 100644
--- a/drivers/media/usb/em28xx/em28xx-i2c.c
+++ b/drivers/media/usb/em28xx/em28xx-i2c.c
@@ -501,6 +501,12 @@ static int em28xx_i2c_xfer(struct i2c_adapter *i2c_adap,
int addr, rc, i;
u8 reg;
+ /* prevent i2c xfer attempts after device is disconnected
+ some fe's try to do i2c writes/reads from their release
+ interfaces when called in disconnect path */
+ if (dev->disconnected)
+ return -ENODEV;
+
rc = rt_mutex_trylock(&dev->i2c_bus_lock);
if (rc < 0)
return rc;