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consolidate the reassignments of ->f_op in ->open() instances

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2013-09-22 14:17:15 -04:00
parent 7b00ed6fe6
commit e84f9e57b9
8 changed files with 43 additions and 77 deletions
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6
fs/char_dev.c
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@@ -368,6 +368,7 @@ void cdev_put(struct cdev *p)
*/
static int chrdev_open(struct inode *inode, struct file *filp)
{
const struct file_operations *fops;
struct cdev *p;
struct cdev *new = NULL;
int ret = 0;
@@ -400,10 +401,11 @@ static int chrdev_open(struct inode *inode, struct file *filp)
return ret;
ret = -ENXIO;
filp->f_op = fops_get(p->ops);
if (!filp->f_op)
fops = fops_get(p->ops);
if (!fops)
goto out_cdev_put;
replace_fops(filp, fops);
if (filp->f_op->open) {
ret = filp->f_op->open(inode, filp);
if (ret)