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staging: most: remove redundant call to wake_up_interruptible

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This patch prevents the cdev module from rousing the channel wait queue in
case the channel is about to be closed. It is safe to do so, because the
application can not be waiting within read or write and at the same time
be calling close.

Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christian Gromm 2015-12-22 10:53:00 +01:00 • committed by Greg Kroah-Hartman
parent 61f6bfcbae
commit 0ccaa6de8e
1 changed files with 0 additions and 2 deletions
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2
drivers/staging/most/aim-cdev/cdev.c
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@ -127,7 +127,6 @@ static int aim_close(struct inode *inode, struct file *filp)
kfifo_free(&channel->fifo);
list_del(&channel->list);
ida_simple_remove(&minor_id, MINOR(channel->devno));
wake_up_interruptible(&channel->wq);
kfree(channel);
return 0;
}
@ -139,7 +138,6 @@ static int aim_close(struct inode *inode, struct file *filp)
most_put_mbo(channel->stacked_mbo);
ret = most_stop_channel(channel->iface, channel->channel_id, &cdev_aim);
atomic_dec(&channel->access_ref);
wake_up_interruptible(&channel->wq);
return ret;
}