jdi_panel_init() is never called in atomic context.
Despite never getting called from atomic context, jdi_panel_init()
calls mdelay() to busily wait.
This is not necessary and can be replaced with usleep_range()
and msleep() to avoid busy waiting.
This is found by a static analysis tool named DCNS written by myself.
And I also manually check it.
Signed-off-by: Jia-Ju Bai <[email protected]>
---
drivers/gpu/drm/panel/panel-jdi-lt070me05000.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
index 5b2340e..46b12a6 100644
--- a/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
+++ b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
@@ -128,7 +128,7 @@ static int jdi_panel_init(struct jdi_panel *jdi)
return ret;
}
- mdelay(10);
+ usleep_range(10000, 11000);
/* Interface setting, video mode */
ret = mipi_dsi_generic_write(dsi, (u8[])
@@ -139,7 +139,7 @@ static int jdi_panel_init(struct jdi_panel *jdi)
return ret;
}
- mdelay(20);
+ msleep(20);
ret = mipi_dsi_generic_write(dsi, (u8[]){0xB0, 0x03}, 2);
if (ret < 0) {
--
1.9.1