From: Paul Cercueil paul@crapouillou.net

[ Upstream commit abf56fadf0e208abfb13ad1ac0094416058da0ad ]

The opaque pointer passed to the IRQ handler is a pointer to the drm_device, not a pointer to our ingenic_drm structure.

It still worked, because our ingenic_drm structure contains the drm_device as its first field, so the pointer received had the same value, but this was not semantically correct.

Cc: stable@vger.kernel.org # v5.3 Fixes: 90b86fcc47b4 ("DRM: Add KMS driver for the Ingenic JZ47xx SoCs") Signed-off-by: Paul Cercueil paul@crapouillou.net Link: https://patchwork.freedesktop.org/patch/msgid/20200516215057.392609-5-paul@c... Acked-by: Sam Ravnborg sam@ravnborg.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/ingenic/ingenic-drm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/ingenic/ingenic-drm.c b/drivers/gpu/drm/ingenic/ingenic-drm.c index 8f5077370a52..e9900e078d51 100644 --- a/drivers/gpu/drm/ingenic/ingenic-drm.c +++ b/drivers/gpu/drm/ingenic/ingenic-drm.c @@ -474,7 +474,7 @@ static int ingenic_drm_encoder_atomic_check(struct drm_encoder *encoder,

static irqreturn_t ingenic_drm_irq_handler(int irq, void *arg) { - struct ingenic_drm *priv = arg; + struct ingenic_drm *priv = drm_device_get_priv(arg); unsigned int state;

regmap_read(priv->map, JZ_REG_LCD_STATE, &state);