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Tue, 21 Jan 2025 02:42:18 -0800 (PST) Received: from localhost.localdomain ([2401:4900:8899:7ee7:e6fd:4c4f:524d:ebac]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-21c2cea0966sm76063255ad.37.2025.01.21.02.42.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 21 Jan 2025 02:42:18 -0800 (PST) From: Atharva Tiwari To: Cc: evepolonium@gmail.com, Jani Nikula , Rodrigo Vivi , Joonas Lahtinen , Tvrtko Ursulin , David Airlie , Simona Vetter , intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH] drm/i915/fbdev: Discard large BIOS framebuffers Date: Tue, 21 Jan 2025 16:12:10 +0530 Message-Id: <20250121104210.3159-1-evepolonium@gmail.com> X-Mailer: git-send-email 2.39.5 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" On certain 4K panels, the BIOS framebuffer exceeds the panel's required dimensions, leading to display corruption. This patch introduces a validation check to address the issue. Signed-off-by: Atharva Tiwari --- drivers/gpu/drm/i915/display/intel_fbdev.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i= 915/display/intel_fbdev.c index 00852ff5b247..e8cf06772c31 100644 --- a/drivers/gpu/drm/i915/display/intel_fbdev.c +++ b/drivers/gpu/drm/i915/display/intel_fbdev.c @@ -197,10 +197,10 @@ static int intelfb_create(struct drm_fb_helper *helpe= r, ifbdev->fb =3D NULL; =20 if (fb && - (sizes->fb_width > fb->base.width || - sizes->fb_height > fb->base.height)) { + (sizes->fb_width !=3D fb->base.width || + sizes->fb_height !=3D fb->base.height)) { drm_dbg_kms(&dev_priv->drm, - "BIOS fb too small (%dx%d), we require (%dx%d)," + "BIOS fb dimensions mismatch (%dx%d), we require (%dx%d)," " releasing it\n", fb->base.width, fb->base.height, sizes->fb_width, sizes->fb_height); --=20 2.39.5