From: Thomas Zimmermann <tzimmermann@suse.de>
To: oushixiong1025@163.com
Cc: Javier Martinez Canillas <javierm@redhat.com>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
Shixiong Ou <oushixiong@kylinos.cn>
Subject: Re: [PATCH v2] drm/sysfb: ofdrm: Fix is_avivo() constant comparison bug
Date: Wed, 26 Aug 2026 08:57:55 +0200 [thread overview]
Message-ID: <615f2d00-a29a-4c09-8c1f-9c910609736d@suse.de> (raw)
In-Reply-To: <20260731111729.703116-1-oushixiong1025@163.com>
Merged into drm-misc-fixes
Am 31.07.26 um 13:17 schrieb oushixiong1025@163.com:
> From: Shixiong Ou <oushixiong@kylinos.cn>
>
> The is_avivo() function has a logic error where it compares a constant
> to another constant instead of checking the device parameter:
>
> (PCI_VENDOR_ID_ATI_R600 >= 0x9400)
>
> Signed-off-by: Shixiong Ou <oushixiong@kylinos.cn>
> ---
> drivers/gpu/drm/sysfb/ofdrm.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/sysfb/ofdrm.c b/drivers/gpu/drm/sysfb/ofdrm.c
> index 819aed466727..1d95df522ad5 100644
> --- a/drivers/gpu/drm/sysfb/ofdrm.c
> +++ b/drivers/gpu/drm/sysfb/ofdrm.c
> @@ -238,7 +238,7 @@ static bool is_avivo(u32 vendor, u32 device)
> /* This will match most R5xx */
> return (vendor == PCI_VENDOR_ID_ATI) &&
> ((device >= PCI_VENDOR_ID_ATI_R520 && device < 0x7800) ||
> - (PCI_VENDOR_ID_ATI_R600 >= 0x9400));
> + (device >= PCI_VENDOR_ID_ATI_R600));
> }
>
> static enum ofdrm_model display_get_model_of(struct drm_device *dev, struct device_node *of_node)
--
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstr. 146, 90461 Nürnberg, Germany, www.suse.com
GF: Jochen Jaser, Andrew McDonald, (HRB 36809, AG Nürnberg)
prev parent reply other threads:[~2026-08-26 6:58 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-31 11:17 oushixiong1025
2026-08-25 11:20 ` Thomas Zimmermann
2026-08-26 6:57 ` Thomas Zimmermann [this message]
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