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Subject[PATCH v2 1/3] video: ssd1307fb: Use gpiod_set_value_cansleep() for reset
Date
The reset signal can be produced by GPIO expander that can sleep.
In that case the probe function fails. Allow using GPIO expanders for
the reset signal by using the non-atomic gpiod_set_value_cansleep()
function.

Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com>
---
v2 changes: none

drivers/video/fbdev/ssd1307fb.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c
index ba66c02..e7ae135 100644
--- a/drivers/video/fbdev/ssd1307fb.c
+++ b/drivers/video/fbdev/ssd1307fb.c
@@ -728,9 +728,9 @@ static int ssd1307fb_probe(struct i2c_client *client,

if (par->reset) {
/* Reset the screen */
- gpiod_set_value(par->reset, 0);
+ gpiod_set_value_cansleep(par->reset, 0);
udelay(4);
- gpiod_set_value(par->reset, 1);
+ gpiod_set_value_cansleep(par->reset, 1);
udelay(4);
}

--
2.1.4
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