Re: [PATCH] drm/panel: ilitek-ili9881c: Fix warning with GPIO controllers that sleep

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Hi Laurent,

On 17/03/2024 16:48, Laurent Pinchart wrote:
The ilitek-ili9881c controls the reset GPIO using the non-sleeping
gpiod_set_value() function. This complains loudly when the GPIO
controller needs to sleep. As the caller can sleep, use
gpiod_set_value_cansleep() to fix the issue.

Seems something buggy happened to the patchset, this patch doesn't appear
in the cover letter and insn't numbered...


Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
  drivers/gpu/drm/panel/panel-ilitek-ili9881c.c | 6 +++---
  1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c b/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
index 80b386f91320..084c37fa7348 100644
--- a/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
@@ -1276,10 +1276,10 @@ static int ili9881c_prepare(struct drm_panel *panel)
  	msleep(5);
/* And reset it */
-	gpiod_set_value(ctx->reset, 1);
+	gpiod_set_value_cansleep(ctx->reset, 1);
  	msleep(20);
- gpiod_set_value(ctx->reset, 0);
+	gpiod_set_value_cansleep(ctx->reset, 0);
  	msleep(20);
for (i = 0; i < ctx->desc->init_length; i++) {
@@ -1334,7 +1334,7 @@ static int ili9881c_unprepare(struct drm_panel *panel)
mipi_dsi_dcs_enter_sleep_mode(ctx->dsi);
  	regulator_disable(ctx->power);
-	gpiod_set_value(ctx->reset, 1);
+	gpiod_set_value_cansleep(ctx->reset, 1);
return 0;
  }

Anyway:
Reviewed-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>



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