kernel/linux.git/drivers/extcon/extcon.c, branch v4.14.286

extcon: Modify extcon device to be created after driver data is set

2022-06-14T14:54:00+00:00

[ Upstream commit 5dcc2afe716d69f5112ce035cb14f007461ff189 ] Currently, someone can invoke the sysfs such as state_show() intermittently before dev_set_drvdata() is done. And it can be a cause of kernel Oops because of edev is Null at that time. So modified the driver registration to after setting drviver data. - Oops's backtrace. Backtrace: [] (state_show) from [] (dev_attr_show) [] (dev_attr_show) from [] (sysfs_kf_seq_show) [] (sysfs_kf_seq_show) from [] (kernfs_seq_show) [] (kernfs_seq_show) from [] (seq_read) [] (seq_read) from [] (kernfs_fop_read) [] (kernfs_fop_read) from [] (__vfs_read) [] (__vfs_read) from [] (vfs_read) [] (vfs_read) from [] (ksys_read) [] (ksys_read) from [] (sys_read) [] (sys_read) from [] (__sys_trace_return) Signed-off-by: bumwoo lee Signed-off-by: Chanwoo Choi Signed-off-by: Sasha Levin

extcon: Fix error handling in extcon_dev_register

2021-04-07T10:47:03+00:00

[ Upstream commit d3bdd1c3140724967ca4136755538fa7c05c2b4e ] When devm_kcalloc() fails, we should execute device_unregister() to unregister edev->dev from system. Fixes: 046050f6e623e ("extcon: Update the prototype of extcon_register_notifier() with enum extcon") Signed-off-by: Dinghao Liu Signed-off-by: Chanwoo Choi Signed-off-by: Sasha Levin

extcon: Release locking when sending the notification of connector state

2018-09-09T17:55:56+00:00

commit 8a9dbb779fe882325b9a0238494a7afaff2eb444 upstream. Previously, extcon used the spinlock before calling the notifier_call_chain to prevent the scheduled out of task and to prevent the notification delay. When spinlock is locked for sending the notification, deadlock issue occured on the side of extcon consumer device. To fix this issue, extcon consumer device should always use the work. it is always not reasonable to use work. To fix this issue on extcon consumer device, release locking when sending the notification of connector state. Fixes: ab11af049f88 ("extcon: Add the synchronization extcon APIs to support the notification") Cc: stable@vger.kernel.org Cc: Roger Quadros Cc: Kishon Vijay Abraham I Signed-off-by: Chanwoo Choi Signed-off-by: Greg Kroah-Hartman

extcon: Correct description to improve the readability

2017-08-16T00:27:55+00:00

The extcon files explains the detailed operation for functions and what is meaning of extcon structure. There are different explanation even if the same argument. So, it modifies the description for both functions and structures in order to improve the readability and guide the role of functions more well. Also, this patch fixes the mismatching license info as a GPL v2 and removes the inactive author information. Signed-off-by: Chanwoo Choi

extcon: Remove unused CABLE_NAME_MAX definition

2017-08-16T00:27:55+00:00

This patch removes the unused CABLE_NAME_MAX definition. Signed-off-by: Chanwoo Choi

extcon: Convert to using %pOF instead of full_name

2017-07-19T01:37:10+00:00

Now that we have a custom printf format specifier, convert users of full_name to use %pOF instead. This is preparation to remove storing of the full path string for each node. Signed-off-by: Rob Herring Signed-off-by: Chanwoo Choi

extcon: Fix a typo in three comment lines

2017-05-23T09:32:02+00:00

Adjust three words in this description for a function. Signed-off-by: Markus Elfring Signed-off-by: Chanwoo Choi

extcon: Use devm_kcalloc() in extcon_dev_register()

2017-05-23T09:32:02+00:00

A multiplication for the size determination of a memory allocation indicated that an array data structure should be processed. Thus use the corresponding function "devm_kcalloc". Signed-off-by: Markus Elfring Signed-off-by: Chanwoo Choi

extcon: Use BIT() macro for the left-shift operation

2017-04-06T02:12:45+00:00

This patch just uses the BIT() macro to make the code simple. Signed-off-by: Chanwoo Choi

extcon: Remove porting compatibility of swich class

2017-04-06T01:55:24+00:00

This patch removes the porting compatibility for switch class because there is no any usage and requirement of swich class over a couple of years. Signed-off-by: Chanwoo Choi