Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 3437b2b8 authored by Daniel Mack's avatar Daniel Mack Committed by Tomi Valkeinen
Browse files

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: default avatarDaniel Mack <zonque@gmail.com>
Acked-by: default avatarHaojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@ti.com>
parent 9e4f9675

drivers/video/pxa3xx-gcu.c

+10 −0
Original line number Diff line number Diff line
@@ -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,