From: Tomasz Figa
Current implementation of unbind dereferences the drvdata pointer
assuming that it's its own data, however the ownership belongs to the
analogix code, which means that the pointer is dereferenced with wrong
type. Fix this by using the recently added platform data .cleanup()
callback to do Rockchip-specific things at unbind.
Cc: Kristian H. Kristensen
Cc: Brian Norris
Signed-off-by: Tomasz Figa
[seanpaul fixed conflict keeping rockchip_dp_unbind() preserving clk_unprepare]
Signed-off-by: Sean Paul
Signed-off-by: Thierry Escande
---
drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 9 -
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
index a6a3d6f1f127..eaa025730c28 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -161,6 +161,13 @@ static int rockchip_dp_get_modes(struct
analogix_dp_plat_data *plat_data,
return 0;
}
+static void rockchip_dp_cleanup(struct analogix_dp_plat_data *plat_data)
+{
+ struct rockchip_dp_device *dp = to_dp(plat_data);
+
+ rockchip_drm_psr_unregister(>encoder);
+}
+
static bool
rockchip_dp_drm_encoder_mode_fixup(struct drm_encoder *encoder,
const struct drm_display_mode *mode,
@@ -333,6 +340,7 @@ static int rockchip_dp_bind(struct device *dev, struct
device *master,
dp->plat_data.power_on = rockchip_dp_poweron;
dp->plat_data.power_off = rockchip_dp_powerdown;
dp->plat_data.get_modes = rockchip_dp_get_modes;
+ dp->plat_data.cleanup = rockchip_dp_cleanup;
ret = rockchip_drm_psr_register(>encoder, analogix_dp_psr_set);
if (ret < 0)
@@ -358,7 +366,6 @@ static void rockchip_dp_unbind(struct device *dev, struct
device *master,
struct rockchip_dp_device *dp = dev_get_drvdata(dev);
analogix_dp_unbind(dp->adp);
- rockchip_drm_psr_unregister(>encoder);
dp->encoder.funcs->destroy(>encoder);
}
--
2.14.1
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