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authorChanwoo Choi <cw00.choi@samsung.com>2016-06-30 20:41:18 +0300
committerKishon Vijay Abraham I <kishon@ti.com>2016-09-10 14:18:49 +0300
commit84c48dc55945b4edfb63388832ebcca82d003ee7 (patch)
tree4b8b94aa8f17a857277aed05d58ce0d5196636a4 /drivers/extcon
parent0143f59de50eee70485be9b658e42495d72698dd (diff)
downloadlinux-84c48dc55945b4edfb63388832ebcca82d003ee7.tar.xz
extcon: Block the bit masking operation for cable state except for extcon core
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 <cw00.choi@samsung.com>
Diffstat (limited to 'drivers/extcon')
-rw-r--r--drivers/extcon/extcon.c20
1 files changed, 1 insertions, 19 deletions
diff --git a/drivers/extcon/extcon.c b/drivers/extcon/extcon.c
index ad5e4546f82c..5b61000cde26 100644
--- a/drivers/extcon/extcon.c
+++ b/drivers/extcon/extcon.c
@@ -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.