From: Sam Ravnborg <sam@ravnborg.org>
To: Paul Cercueil <paul@crapouillou.net>
Cc: David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
Rob Herring <robh+dt@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J . Wysocki" <rafael@kernel.org>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
stable@vger.kernel.org, od@zcrc.me,
dri-devel@lists.freedesktop.org
Subject: Re: [PATCH 05/12] gpu/drm: Ingenic: Fix opaque pointer casted to wrong type
Date: Sun, 17 May 2020 08:21:05 +0200 [thread overview]
Message-ID: <20200517062105.GD609600@ravnborg.org> (raw)
In-Reply-To: <20200516215057.392609-5-paul@crapouillou.net>
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
next prev parent reply other threads:[~2020-05-17 6:21 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-16 21:50 [PATCH 01/12] dt-bindings: display: Convert ingenic,lcd.txt to YAML Paul Cercueil
2020-05-16 21:50 ` [PATCH 02/12] dt-bindings: display: Add ingenic,ipu.yaml Paul Cercueil
2020-05-17 6:17 ` Sam Ravnborg
2020-05-17 11:06 ` Paul Cercueil
2020-05-16 21:50 ` [PATCH 03/12] component: Support binding with no matches Paul Cercueil
2020-05-16 21:50 ` [PATCH 04/12] gpu/drm: ingenic: Fix bogus crtc_atomic_check callback Paul Cercueil
2020-05-17 6:17 ` Sam Ravnborg
2020-05-17 12:19 ` Paul Cercueil
2020-05-16 21:50 ` [PATCH 05/12] gpu/drm: Ingenic: Fix opaque pointer casted to wrong type Paul Cercueil
2020-05-17 6:21 ` Sam Ravnborg [this message]
2020-05-17 12:19 ` Paul Cercueil
2020-05-16 21:50 ` [PATCH 06/12] gpu/drm: Ingenic: Fix incorrect assumption about plane->index Paul Cercueil
2020-05-16 21:50 ` [PATCH 07/12] gpu/drm: ingenic: Set DMA descriptor chain address in probe Paul Cercueil
2020-05-16 21:50 ` [PATCH 08/12] gpu/drm: Ingenic: Move register definitions to ingenic-drm.h Paul Cercueil
2020-05-16 21:50 ` [PATCH 09/12] gpu/drm: Ingenic: Add support for OSD mode Paul Cercueil
2020-05-16 21:50 ` [PATCH 10/12] gpu/drm: Ingenic: Register driver as component master Paul Cercueil
2020-05-16 21:50 ` [PATCH 11/12] gpu/drm: Ingenic: Add support for the IPU Paul Cercueil
2020-05-18 10:48 ` Emil Velikov
2020-05-18 11:26 ` Paul Cercueil
2020-05-19 17:10 ` Paul Boddie
2020-05-16 21:50 ` [PATCH 12/12] gpu/drm: Ingenic: Support multiple panels/bridges Paul Cercueil
2020-05-17 6:12 ` [PATCH 01/12] dt-bindings: display: Convert ingenic,lcd.txt to YAML Sam Ravnborg
2020-05-28 20:17 ` Rob Herring
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