diff options
Diffstat (limited to 'patches.tizen/0803-WIP-extcon-do-not-update-cable-state-if-notifier-can.patch')
| -rw-r--r-- | patches.tizen/0803-WIP-extcon-do-not-update-cable-state-if-notifier-can.patch | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/patches.tizen/0803-WIP-extcon-do-not-update-cable-state-if-notifier-can.patch b/patches.tizen/0803-WIP-extcon-do-not-update-cable-state-if-notifier-can.patch new file mode 100644 index 00000000000..950c9a7fcb7 --- /dev/null +++ b/patches.tizen/0803-WIP-extcon-do-not-update-cable-state-if-notifier-can.patch @@ -0,0 +1,46 @@ +From 5c4726c8b8261f1ee23754218a2ac179fce93226 Mon Sep 17 00:00:00 2001 +From: Chanho Park <chanho61.park@samsung.com> +Date: Wed, 25 Sep 2013 16:47:33 +0900 +Subject: [PATCH 0803/1302] WIP: extcon: do not update cable state if notifier + cannot handle it + +During probing a extcon-max77693 driver, extcon-port driver can't receive nb +callback due to initializing sequences. +Thus, if the callback can't be handled, we do not update the cable state. +I'm not sure this patch is good solution :) + +Signed-off-by: Chanho Park <chanho61.park@samsung.com> +Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> +--- + drivers/extcon/extcon-class.c | 8 +++++++- + 1 file changed, 7 insertions(+), 1 deletion(-) + +diff --git a/drivers/extcon/extcon-class.c b/drivers/extcon/extcon-class.c +index 60adc04..e7b851b 100644 +--- a/drivers/extcon/extcon-class.c ++++ b/drivers/extcon/extcon-class.c +@@ -229,6 +229,7 @@ int extcon_update_state(struct extcon_dev *edev, u32 mask, u32 state) + int env_offset = 0; + int length; + unsigned long flags; ++ int ret; + + spin_lock_irqsave(&edev->lock, flags); + +@@ -244,7 +245,12 @@ int extcon_update_state(struct extcon_dev *edev, u32 mask, u32 state) + edev->state &= ~mask; + edev->state |= state & mask; + +- raw_notifier_call_chain(&edev->nh, old_state, edev); ++ ret = raw_notifier_call_chain(&edev->nh, old_state, edev); ++ if ((ret & ~NOTIFY_STOP_MASK) != NOTIFY_OK) { ++ edev->state = old_state; ++ spin_unlock_irqrestore(&edev->lock, flags); ++ return -ENODEV; ++ } + + /* This could be in interrupt handler */ + prop_buf = (char *)get_zeroed_page(GFP_ATOMIC); +-- +1.8.3.2 + |