diff options
| author | Daniel Mack <zonque@gmail.com> | 2014-03-05 17:12:48 +0100 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-03-07 14:04:49 +0100 |
| commit | 3437b2b83f3bdb99ae4ffc2fd1e1608d6e06fffe (patch) | |
| tree | 12bea9faa08c616504de609c05649448a19a92df /drivers/video/pxa3xx-gcu.c | |
| parent | video: pxa3xx-gcu: pass around struct device * (diff) | |
| download | linux-3437b2b83f3bdb99ae4ffc2fd1e1608d6e06fffe.tar.xz linux-3437b2b83f3bdb99ae4ffc2fd1e1608d6e06fffe.zip | |
video: pxa3xx-gcu: provide an empty .open call
This is necessary in order to make the core set file->private_data to
miscdev in use. We need that information later to dereference the
container of the device, so we can get access to our private struct from
other callbacks.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/video/pxa3xx-gcu.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/video/pxa3xx-gcu.c b/drivers/video/pxa3xx-gcu.c index f9961ba91430..73c29ecf080f 100644 --- a/drivers/video/pxa3xx-gcu.c +++ b/drivers/video/pxa3xx-gcu.c @@ -373,6 +373,15 @@ static inline struct pxa3xx_gcu_priv *to_pxa3xx_gcu_priv(struct file *file) return container_of(dev, struct pxa3xx_gcu_priv, misc_dev); } +/* + * provide an empty .open callback, so the core sets file->private_data + * for us. + */ +static int pxa3xx_gcu_open(struct inode *inode, struct file *file) +{ + return 0; +} + static ssize_t pxa3xx_gcu_write(struct file *file, const char *buff, size_t count, loff_t *offp) @@ -571,6 +580,7 @@ pxa3xx_gcu_free_buffers(struct device *dev, static const struct file_operations pxa3xx_gcu_miscdev_fops = { .owner = THIS_MODULE, + .open = pxa3xx_gcu_open, .write = pxa3xx_gcu_write, .unlocked_ioctl = pxa3xx_gcu_ioctl, .mmap = pxa3xx_gcu_mmap, |