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authorMarek Szyprowski <m.szyprowski@samsung.com>2020-04-27 10:48:29 +0300
committerLee Jones <lee.jones@linaro.org>2020-05-26 12:51:20 +0300
commitd4f9b5428b53dd67f49ee8deed8d4366ed6b1933 (patch)
treec46c6a26540f782eee60c362b18ab04cee2d6015 /drivers/mfd
parent5037941f31516276e1e95d6aafebd6d9992b24a8 (diff)
downloadlinux-d4f9b5428b53dd67f49ee8deed8d4366ed6b1933.tar.xz
mfd: wm8994: Fix driver operation if loaded as modules
WM8994 chip has built-in regulators, which might be used for chip operation. They are controlled by a separate wm8994-regulator driver, which should be loaded before this driver calls regulator_get(), because that driver also provides consumer-supply mapping for the them. If that driver is not yet loaded, regulator core substitute them with dummy regulator, what breaks chip operation, because the built-in regulators are never enabled. Fix this by annotating this driver with MODULE_SOFTDEP() "pre" dependency to "wm8994_regulator" module. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/wm8994-core.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mfd/wm8994-core.c b/drivers/mfd/wm8994-core.c
index 1e9fe7d92597..737dede4a95c 100644
--- a/drivers/mfd/wm8994-core.c
+++ b/drivers/mfd/wm8994-core.c
@@ -690,3 +690,4 @@ module_i2c_driver(wm8994_i2c_driver);
MODULE_DESCRIPTION("Core support for the WM8994 audio CODEC");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_SOFTDEP("pre: wm8994_regulator");