xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

uio: add resource managed devm_uio_register_device() function

Browse Source 
This change adds a resource managed equivalent of uio_register_device().
Not adding devm_uio_unregister_device(), since the intent is to discourage
it's usage. Having such a function may allow some bad driver designs. Most
users of devm_*register*() functions rarely use the unregister equivalents.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20200306161853.25368-1-alexandru.ardelean@analog.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexandru Ardelean
2020-03-06 18:18:52 +02:00
committed by Greg Kroah-Hartman
parent 05d67ec3ca
commit 86a78b1cfc
2 changed files with 47 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
include/linux/uio_driver.h
View File

@@ -123,6 +123,15 @@ extern int __must_check
extern void uio_unregister_device(struct uio_info *info);
extern void uio_event_notify(struct uio_info *info);
extern int __must_check
__devm_uio_register_device(struct module *owner,
struct device *parent,
struct uio_info *info);
/* use a define to avoid include chaining to get THIS_MODULE */
#define devm_uio_register_device(parent, info) \
__devm_uio_register_device(THIS_MODULE, parent, info)
/* defines for uio_info->irq */
#define UIO_IRQ_CUSTOM -1
#define UIO_IRQ_NONE 0