diff options
-rw-r--r-- | drivers/staging/most/aim-cdev/cdev.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/staging/most/aim-cdev/cdev.c b/drivers/staging/most/aim-cdev/cdev.c index dc3fb25b52aa..6f70ed715064 100644 --- a/drivers/staging/most/aim-cdev/cdev.c +++ b/drivers/staging/most/aim-cdev/cdev.c @@ -39,7 +39,6 @@ struct aim_channel { struct most_channel_config *cfg; unsigned int channel_id; dev_t devno; - bool keep_mbo; unsigned int mbo_offs; struct mbo *stacked_mbo; DECLARE_KFIFO_PTR(fifo, typeof(struct mbo *)); @@ -136,7 +135,7 @@ static int aim_close(struct inode *inode, struct file *filp) while (kfifo_out((struct kfifo *)&channel->fifo, &mbo, 1)) most_put_mbo(mbo); - if (channel->keep_mbo) + if (channel->stacked_mbo) most_put_mbo(channel->stacked_mbo); ret = most_stop_channel(channel->iface, channel->channel_id, &cdev_aim); atomic_dec(&channel->access_ref); @@ -227,9 +226,8 @@ aim_read(struct file *filp, char __user *buf, size_t count, loff_t *offset) struct mbo *mbo; struct aim_channel *channel = filp->private_data; - if (channel->keep_mbo) { + if (channel->stacked_mbo) { mbo = channel->stacked_mbo; - channel->keep_mbo = false; goto start_copy; } while ((!kfifo_out(&channel->fifo, &mbo, 1)) && (channel->dev)) { @@ -249,9 +247,6 @@ start_copy: return -EIO; } - if (count < mbo->processed_length) - channel->keep_mbo = true; - proc_len = min((int)count, (int)(mbo->processed_length - channel->mbo_offs)); @@ -261,12 +256,13 @@ start_copy: retval = not_copied ? proc_len - not_copied : proc_len; - if (channel->keep_mbo) { + if (count < mbo->processed_length) { channel->mbo_offs = retval; channel->stacked_mbo = mbo; } else { most_put_mbo(mbo); channel->mbo_offs = 0; + channel->stacked_mbo = NULL; } mutex_unlock(&channel->io_mutex); return retval; |