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 --- 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 0c472382a08b..97244462599b 100644 --- a/drivers/gpu/drm/ingenic/ingenic-drm.c +++ b/drivers/gpu/drm/ingenic/ingenic-drm.c @@ -476,7 +476,7 @@ 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);
On Sat, May 16, 2020 at 11:50:50PM +0200, Paul Cercueil wrote:
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
Acked-by: Sam Ravnborg sam@ravnborg.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 0c472382a08b..97244462599b 100644 --- a/drivers/gpu/drm/ingenic/ingenic-drm.c +++ b/drivers/gpu/drm/ingenic/ingenic-drm.c @@ -476,7 +476,7 @@ 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); -- 2.26.2
dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
Hi Sam,
Le dim. 17 mai 2020 à 8:21, Sam Ravnborg sam@ravnborg.org a écrit :
On Sat, May 16, 2020 at 11:50:50PM +0200, Paul Cercueil wrote:
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
Acked-by: Sam Ravnborg sam@ravnborg.org
Pushed to drm-misc-fixes, thanks for the review.
-Paul
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 0c472382a08b..97244462599b 100644 --- a/drivers/gpu/drm/ingenic/ingenic-drm.c +++ b/drivers/gpu/drm/ingenic/ingenic-drm.c @@ -476,7 +476,7 @@ 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);
-- 2.26.2
dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
linux-stable-mirror@lists.linaro.org
-
Paul Cercueil -
Sam Ravnborg