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

HID: add hid_hw_open/close/power() handlers

Browse Source 
Instead of exposing the guts of hid->ll_driver relationship to HID
sub-drivers provide these helpers to encapsulate the details.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Dmitry Torokhov
2010-12-07 23:02:48 -08:00
committed by Jiri Kosina
parent 33d6eb570b
commit 5bea7660bb
5 changed files with 68 additions and 34 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/hid/hidraw.c
View File

@@ -193,15 +193,13 @@ static int hidraw_open(struct inode *inode, struct file *file)
dev = hidraw_table[minor];
if (!dev->open++) {
if (dev->hid->ll_driver->power) {
err = dev->hid->ll_driver->power(dev->hid, PM_HINT_FULLON);
if (err < 0)
goto out_unlock;
}
err = dev->hid->ll_driver->open(dev->hid);
err = hid_hw_power(dev->hid, PM_HINT_FULLON);
if (err < 0)
goto out_unlock;
err = hid_hw_open(dev->hid);
if (err < 0) {
if (dev->hid->ll_driver->power)
dev->hid->ll_driver->power(dev->hid, PM_HINT_NORMAL);
hid_hw_power(dev->hid, PM_HINT_NORMAL);
dev->open--;
}
}
@@ -230,9 +228,8 @@ static int hidraw_release(struct inode * inode, struct file * file)
dev = hidraw_table[minor];
if (!--dev->open) {
if (list->hidraw->exist) {
if (dev->hid->ll_driver->power)
dev->hid->ll_driver->power(dev->hid, PM_HINT_NORMAL);
dev->hid->ll_driver->close(dev->hid);
hid_hw_power(dev->hid, PM_HINT_NORMAL);
hid_hw_close(dev->hid);
} else {
kfree(list->hidraw);
}
@@ -434,7 +431,7 @@ void hidraw_disconnect(struct hid_device *hid)
device_destroy(hidraw_class, MKDEV(hidraw_major, hidraw->minor));
if (hidraw->open) {
hid->ll_driver->close(hid);
hid_hw_close(hid);
wake_up_interruptible(&hidraw->wait);
} else {
kfree(hidraw);