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gpio: mxc: add check to return defer probe if clock tree NOT ready
authorAnson Huang <anson.huang@nxp.com>
Sat, 23 Feb 2019 03:18:25 +0000 (03:18 +0000)
committerLinus Walleij <linus.walleij@linaro.org>
Mon, 25 Feb 2019 12:42:46 +0000 (13:42 +0100)
commita329bbe707cee2cf8c660890ef2ad0d00ec7e8a3
treee62ccaf8b7ce2ea9d9c7a397dceee4edca319cc8
parentaf39459b896d732dd0ff9ef00ee59fe4ef6d1981
gpio: mxc: add check to return defer probe if clock tree NOT ready

On i.MX8MQ platform, clock driver uses platform driver
model and it is probed after GPIO driver, so when GPIO
driver fails to get clock, it should check the error type
to decide whether to return defer probe or just ignore
the clock operation.

Fixes: 2808801aab8a ("gpio: mxc: add clock operation")
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
drivers/gpio/gpio-mxc.c