[PATCH] regulator: axp20x: Mark expected switch fall-throughs

From: Gustavo A. R. Silva
Date: Wed Mar 20 2019 - 12:57:25 EST

In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.

This patch fixes the following warnings:

drivers/regulator/axp20x-regulator.c: In function âaxp20x_set_dcdc_freqâ:
drivers/regulator/axp20x-regulator.c:1023:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/regulator/axp20x-regulator.c:1025:2: note: here
case AXP806_ID:
drivers/regulator/axp20x-regulator.c: In function âaxp20x_set_dcdc_workmodeâ:
drivers/regulator/axp20x-regulator.c:1115:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/regulator/axp20x-regulator.c:1121:2: note: here
case AXP221_ID:

Notice that in this particular case, I moved the whole comment
"Fall through to the check below.", which contains the "Fall through"
comment, at the bottom of the case, which is what GCC is expecting
to find.

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enable

Signed-off-by: Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx>
drivers/regulator/axp20x-regulator.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/regulator/axp20x-regulator.c b/drivers/regulator/axp20x-regulator.c
index 07e10c8b0a22..152053361862 100644
--- a/drivers/regulator/axp20x-regulator.c
+++ b/drivers/regulator/axp20x-regulator.c
@@ -1021,7 +1021,7 @@ static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
* (See include/linux/mfd/axp20x.h)
- /* Fall through to the check below.*/
+ /* Fall through - to the check below.*/
case AXP806_ID:
* AXP806 also have DCDC work frequency setting register at a
@@ -1112,12 +1112,12 @@ static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 work

case AXP806_ID:
- reg = AXP806_DCDC_MODE_CTRL2;
* AXP806 DCDC regulator IDs have the same range as AXP22X.
- * Fall through to the check below.
* (See include/linux/mfd/axp20x.h)
+ reg = AXP806_DCDC_MODE_CTRL2;
+ /* Fall through - to the check below. */
case AXP221_ID:
case AXP223_ID:
case AXP809_ID: