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authorPaul Kocialkowski <contact@paulk.fr>2016-02-05 21:42:18 +0300
committerMark Brown <broonie@kernel.org>2016-02-05 21:57:08 +0300
commit690f44badf2f44b8ec09098118b74f789f95e2c8 (patch)
tree624763eb5b055bb2fdc90cda6d144b3ccc5614d1 /drivers/regulator
parent92e963f50fc74041b5e9e744c330dca48e04f08d (diff)
downloadlinux-690f44badf2f44b8ec09098118b74f789f95e2c8.tar.xz
regulator: lp872x: Remove warning about invalid DVS GPIO
Some devices don't hook the DVS pin to a GPIO but to ground or VCC. In those cases, it is not a problem to have no DVS GPIO provided, as the current code will already switch to software-only DVS selection: When the DVS GPIO is invalid, lp872x_init_dvs jumps to the set_default_dvs_mode label, which instructs the chip not to use the DVS pin at all and do it all in software instead (by clearing the LP8720_EXT_DVS_M bit in the LP872X_GENERAL_CFG register). That is reflected later in the code, when setting the bucks (the DVS pin only applies to the bucks) by checking for the LP8720_EXT_DVS_M bit on the LP872X_GENERAL_CFG register (in lp872x_select_buck_vout_addr) to decide whether to use software or hardware DVS selection. Thus, there is no need to print a warning when the DVS GPIO is invalid. Signed-off-by: Paul Kocialkowski <contact@paulk.fr> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/lp872x.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/regulator/lp872x.c b/drivers/regulator/lp872x.c
index 19d758486553..21c49d871aba 100644
--- a/drivers/regulator/lp872x.c
+++ b/drivers/regulator/lp872x.c
@@ -738,10 +738,8 @@ static int lp872x_init_dvs(struct lp872x *lp)
goto set_default_dvs_mode;
gpio = dvs->gpio;
- if (!gpio_is_valid(gpio)) {
- dev_warn(lp->dev, "invalid gpio: %d\n", gpio);
+ if (!gpio_is_valid(gpio))
goto set_default_dvs_mode;
- }
pinstate = dvs->init_state;
ret = devm_gpio_request_one(lp->dev, gpio, pinstate, "LP872X DVS");