ARM: omap1/ams-delta: warn about failed regulator enable
authorArnd Bergmann <arnd@arndb.de>
Fri, 15 Jan 2016 13:41:03 +0000 (14:41 +0100)
committerArnd Bergmann <arnd@arndb.de>
Thu, 27 Jul 2017 20:57:40 +0000 (22:57 +0200)
commit595a9f9a570f0372228f1f0cca95583043e54a4b
tree4c5a287827898327008624c5afb3644b19ebe11e
parent47589c4af939bcc01da5d9a803fe0413c72a31c2
ARM: omap1/ams-delta: warn about failed regulator enable

The modem pm handler in the ams-delta board uses regulator_enable()
but does not check for a successful return code:

board-ams-delta.c:521:3: error: ignoring return value of 'regulator_enable', declared with attribute warn_unused_result [-Werror=unused-result]

It is not easy to propagate that return code to the callers in
uart_configure_port/uart_suspend_port/uart_resume_port, unless
we change all UART drivers, and it is unclear what those would
do with the return code.

Instead, this patch uses a runtime warning to replace the
compiletime warning. I have checked that the regulator in question
is hardcoded to a fixed-voltage GPIO regulator, and that should
never fail to get enabled if I understand the code right.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Link: https://patchwork.kernel.org/patch/8391981/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
arch/arm/mach-omap1/board-ams-delta.c