From: Thomas Zimmermann <tzimmermann@suse.de>
To: jfalempe@redhat.com, javierm@redhat.com, airlied@gmail.com,
simona@ffwll.ch, maarten.lankhorst@linux.intel.com,
mripard@kernel.org, geert@linux-m68k.org, rdunlap@infradead.org
Cc: dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org,
amd-gfx@lists.freedesktop.org, rust-for-linux@vger.kernel.org,
linux-hyperv@vger.kernel.org, intel-gfx@lists.freedesktop.org,
intel-xe@lists.freedesktop.org, imx@lists.linux.dev,
linux-arm-kernel@lists.infradead.org,
nouveau@lists.freedesktop.org, linux-renesas-soc@vger.kernel.org,
virtualization@lists.linux.dev, sashiko-reviews@lists.linux.dev,
Thomas Zimmermann <tzimmermann@suse.de>
Subject: [PATCH v2 03/13] drm/panic: Return -EINVAL if font is not available
Date: Mon, 24 Aug 2026 14:43:34 +0200 [thread overview]
Message-ID: <20260824125201.218863-4-tzimmermann@suse.de> (raw)
In-Reply-To: <20260824125201.218863-1-tzimmermann@suse.de>
Font lookup does not allocate memory. Hence reporting ENOMEM on
failed lookups is misleading. Report EINVAL instead.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
---
drivers/gpu/drm/drm_panic.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_panic.c b/drivers/gpu/drm/drm_panic.c
index d28ce8878e05..62490d32019c 100644
--- a/drivers/gpu/drm/drm_panic.c
+++ b/drivers/gpu/drm/drm_panic.c
@@ -751,8 +751,10 @@ static int _draw_panic_screen_qr_code(struct drm_scanout_buffer *sb)
int qr_width, qr_canvas_width, qr_pitch, v_margin;
u8 *qr_image;
- if (!font || !qrbuf1 || !qrbuf2 || !stream.workspace)
+ if (!qrbuf1 || !qrbuf2 || !stream.workspace)
return -ENOMEM;
+ if (!font)
+ return -EINVAL;
r_screen = DRM_RECT_INIT(0, 0, sb->width, sb->height);
--
2.55.0
next prev parent reply other threads:[~2026-08-24 12:53 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-24 12:43 [PATCH v2 00/13] drm/panic: Split into core and helpers Thomas Zimmermann
2026-08-24 12:43 ` [PATCH v2 01/13] drm/panic: Do not use un-escaped URL as format string Thomas Zimmermann
2026-08-24 12:43 ` [PATCH v2 02/13] drm/panic: Test address from kmap op for NULL Thomas Zimmermann
2026-08-24 12:43 ` Thomas Zimmermann [this message]
2026-08-24 12:43 ` [PATCH v2 04/13] drm/panic: Return errno codes if panic output fails Thomas Zimmermann
2026-08-24 12:43 ` [PATCH v2 05/13] drm/panic: Pass colors to draw_panic_dispatch() Thomas Zimmermann
2026-08-24 12:43 ` [PATCH v2 06/13] drm/panic: Pass global module parameters to drm_panic_dispatch() Thomas Zimmermann
2026-08-24 12:43 ` [PATCH v2 07/13] drm/panic: Retry in dispatch function if panic output fails Thomas Zimmermann
2026-08-24 12:43 ` [PATCH v2 08/13] drm/panic: Split draw_panic_plane() Thomas Zimmermann
2026-08-24 12:43 ` [PATCH v2 09/13] drm/panic: Restrict to primary planes; unconditionally unregister Thomas Zimmermann
2026-08-24 12:43 ` [PATCH v2 10/13] drm/panic: Display panic screen via per-plane callback Thomas Zimmermann
2026-08-24 12:43 ` [PATCH v2 11/13] drm/panic: Internalize panic locking in DRM core and helpers Thomas Zimmermann
2026-08-24 12:43 ` [PATCH v2 12/13] drm/panic: Move panic display code into helper library Thomas Zimmermann
2026-08-24 12:43 ` [PATCH v2 13/13] drm/panic: Compile KUnit tests as module Thomas Zimmermann
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260824125201.218863-4-tzimmermann@suse.de \
--to=tzimmermann@suse.de \
--cc=airlied@gmail.com \
--cc=amd-gfx@lists.freedesktop.org \
--cc=dri-devel@lists.freedesktop.org \
--cc=geert@linux-m68k.org \
--cc=imx@lists.linux.dev \
--cc=intel-gfx@lists.freedesktop.org \
--cc=intel-xe@lists.freedesktop.org \
--cc=javierm@redhat.com \
--cc=jfalempe@redhat.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-hyperv@vger.kernel.org \
--cc=linux-renesas-soc@vger.kernel.org \
--cc=maarten.lankhorst@linux.intel.com \
--cc=mripard@kernel.org \
--cc=nouveau@lists.freedesktop.org \
--cc=rdunlap@infradead.org \
--cc=rust-for-linux@vger.kernel.org \
--cc=sashiko-reviews@lists.linux.dev \
--cc=simona@ffwll.ch \
--cc=virtualization@lists.linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox