A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-30 03:27:44 -04:00
Code Issues Projects Releases Packages Wiki Activity

extcon: Block the bit masking operation for cable state except for extcon core

Browse source 
This patch restrict the usage of extcon_update_state() in the extcon
core because the extcon_update_state() use the bit masking to change
the state of external connector. When this function is used in device drivers,
it may occur the probelm with the handling mistake of bit masking.

Also, this patch removes the extcon_get/set_state() functions because these
functions use the bit masking which is reluctant way. Instead, extcon
provides the extcon_set/get_cable_state_() functions.

Signed-off-by: Chanwoo Choi <[email protected]>
This commit is contained in:
Chanwoo Choi 2016-07-01 02:41:18 +09:00
commit 912465bcf8
2 changed files with 1 additions and 49 deletions
Download patch file Download diff file Expand all files Collapse all files

20
drivers/extcon/extcon.c
View file

@ -224,7 +224,7 @@ static ssize_t cable_state_show(struct device *dev,
* Note that the notifier provides which bits are changed in the state
* variable with the val parameter (second) to the callback.
*/
int extcon_update_state(struct extcon_dev *edev, u32 mask, u32 state)
static int extcon_update_state(struct extcon_dev *edev, u32 mask, u32 state)
{
char name_buf[120];
char state_buf[120];
@ -300,24 +300,6 @@ int extcon_update_state(struct extcon_dev *edev, u32 mask, u32 state)
return 0;
}
EXPORT_SYMBOL_GPL(extcon_update_state);
/**
* extcon_set_state() - Set the cable attach states of the extcon device.
* @edev: the extcon device
* @state: new cable attach status for @edev
*
* Note that notifier provides which bits are changed in the state
* variable with the val parameter (second) to the callback.
*/
int extcon_set_state(struct extcon_dev *edev, u32 state)
{
if (!edev)
return -EINVAL;
return extcon_update_state(edev, 0xffffffff, state);
}
EXPORT_SYMBOL_GPL(extcon_set_state);
/**
* extcon_get_cable_state_() - Get the status of a specific cable.