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6b852620fa
Whenever write_reg() fails to open/close the demod's I2C gate, release the lock to avoid deadlocking situations. If I2c gate open failed, there's no need to hold a lock, and if close fails, the mutex_unlock() at the end of the function is never reached, leaving the mutex_lock in locked state, which in turn will cause potential for deadlocks. Thus, release the lock on failure. While we're touching gate_ctrl(), add some explanation about the need for locking and the shared I2C bus/gate. Cc: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Daniel Scheller <d.scheller@gmx.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> |
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| .. | ||
| cec | ||
| common | ||
| dvb-core | ||
| dvb-frontends | ||
| firewire | ||
| i2c | ||
| mmc | ||
| pci | ||
| platform | ||
| radio | ||
| rc | ||
| spi | ||
| tuners | ||
| usb | ||
| v4l2-core | ||
| Kconfig | ||
| Makefile | ||
| media-device.c | ||
| media-devnode.c | ||
| media-entity.c | ||