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staging: most: rearrange function aim_write 

This patch straightens and rearranges the code of function aim_write()
of module aim-cdev.

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 10:53:07 +01:00 committed by Greg Kroah-Hartman
parent f45b0fba43
commit 5adf5dc568
1 changed files with 14 additions and 18 deletions
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32
drivers/staging/most/aim-cdev/cdev.c
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@ -183,10 +183,9 @@ static int aim_close(struct inode *inode, struct file *filp)
static ssize_t aim_write(struct file *filp, const char __user *buf,
size_t count, loff_t *offset)
{
int ret, err;
int ret;
size_t actual_len;
size_t max_len;
ssize_t retval;
struct mbo *mbo = NULL;
struct aim_channel *c = filp->private_data;
@ -202,33 +201,30 @@ static ssize_t aim_write(struct file *filp, const char __user *buf,
}
if (unlikely(!c->dev)) {
err = -EPIPE;
goto error;
ret = -EPIPE;
goto unlock;
}
max_len = c->cfg->buffer_size;
actual_len = min(count, max_len);
mbo->buffer_length = actual_len;
retval = copy_from_user(mbo->virt_address, buf, mbo->buffer_length);
if (retval) {
err = -EIO;
goto error;
if (copy_from_user(mbo->virt_address, buf, mbo->buffer_length)) {
ret = -EFAULT;
goto put_mbo;
}
ret = most_submit_mbo(mbo);
if (ret) {
pr_info("submitting MBO to core failed\n");
err = ret;
goto error;
}
if (ret)
goto put_mbo;
mutex_unlock(&c->io_mutex);
return actual_len - retval;
error:
if (mbo)
most_put_mbo(mbo);
return actual_len;
put_mbo:
most_put_mbo(mbo);
unlock:
mutex_unlock(&c->io_mutex);
return err;
return ret;
}
/**