When binding the TCON, we were checking the reset control status and
asserting reset if it wasn't in reset. The check failed to account for
the reset control API returning error codes if the status callback was
not implemented.
Since we want the TCON to be reset in all cases, and re-asserting the
reset control does no harm, just assert the reset unconditionally.
Fixes: 9026e0d122ac ("drm: Add Allwinner A10 Display Engine support")
Signed-off-by: Chen-Yu Tsai <w...@csie.org>
---
drivers/gpu/drm/sun4i/sun4i_tcon.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c
b/drivers/gpu/drm/sun4i/sun4i_tcon.c
index d9791292553e..eb32676d5b01 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
@@ -530,8 +530,7 @@ static int sun4i_tcon_bind(struct device *dev, struct
device *master,
}
/* Make sure our TCON is reset */
- if (!reset_control_status(tcon->lcd_rst))
- reset_control_assert(tcon->lcd_rst);
+ reset_control_assert(tcon->lcd_rst);
ret = reset_control_deassert(tcon->lcd_rst);
if (ret) {
--
2.14.1
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