]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
pinctrl: baytrail: Replace WARN with dev_info_once when setting direct-irq pin to...
authorHans de Goede <hdegoede@redhat.com>
Wed, 1 Jan 2020 14:52:43 +0000 (15:52 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 11 Dec 2020 12:24:59 +0000 (13:24 +0100)
commitc2e042a2e44f2b3506f4dbb633814296a690c1fd
treeafe6084122e6735d5d1cfe357bb1ae4a1abda468
parent4abf26854aade9732a215a168205fa9fecd6149a
pinctrl: baytrail: Replace WARN with dev_info_once when setting direct-irq pin to output

commit e2b74419e5cc7cfc58f3e785849f73f8fa0af5b3 upstream

Suspending Goodix touchscreens requires changing the interrupt pin to
output before sending them a power-down command. Followed by wiggling
the interrupt pin to wake the device up, after which it is put back
in input mode.

On Cherry Trail device the interrupt pin is listed as a GpioInt ACPI
resource so we can do this without problems as long as we release the
IRQ before changing the pin to output mode.

On Bay Trail devices with a Goodix touchscreen direct-irq mode is used
in combination with listing the pin as a normal GpioIo resource. This
works fine, but this triggers the WARN in byt_gpio_set_direction-s output
path because direct-irq support is enabled on the pin.

This commit replaces the WARN call with a dev_info_once call, fixing a
bunch of WARN splats in dmesg on each suspend/resume cycle.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/pinctrl/intel/pinctrl-baytrail.c