lkml.org 
[lkml]   [2021]   [Nov]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 1/1] extcon: deduplicate code in extcon_set_state_sync()
Date
Finding the cable index and checking for changed status is also done
in extcon_set_state(). So calling extcon_set_state_sync() will do these
checks twice. Remove them and use these checks from extcon_set_state().

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
---
I noticed this duplicated code while debugging an extcon related issue.
I do not know if it is allowed in the kernel to assume some behavior in
EXPORT_SYMBOL* functions, but as the two functions mentioned are in the
same source file it should be ok.
In the case it is not okay to assume some behaviour,
extcon_set_state_sync() is missing a check for !edev, like
extcon_set_state() does.

drivers/extcon/extcon.c | 14 +-------------
1 file changed, 1 insertion(+), 13 deletions(-)

diff --git a/drivers/extcon/extcon.c b/drivers/extcon/extcon.c
index e7a9561a826d..a09e704fd0fa 100644
--- a/drivers/extcon/extcon.c
+++ b/drivers/extcon/extcon.c
@@ -576,19 +576,7 @@ EXPORT_SYMBOL_GPL(extcon_set_state);
*/
int extcon_set_state_sync(struct extcon_dev *edev, unsigned int id, bool state)
{
- int ret, index;
- unsigned long flags;
-
- index = find_cable_index_by_id(edev, id);
- if (index < 0)
- return index;
-
- /* Check whether the external connector's state is changed. */
- spin_lock_irqsave(&edev->lock, flags);
- ret = is_extcon_changed(edev, index, state);
- spin_unlock_irqrestore(&edev->lock, flags);
- if (!ret)
- return 0;
+ int ret;

ret = extcon_set_state(edev, id, state);
if (ret < 0)
--
2.25.1
\
 
 \ /
  Last update: 2021-11-23 15:54    [W:0.060 / U:0.444 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site