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James Lambert
41 lines
1.7 KiB
Diff
41 lines
1.7 KiB
Diff
From 155bb242ee7f4e177386fbdec565db6d4a173d5e Mon Sep 17 00:00:00 2001
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From: Aun-Ali Zaidi <admin@kodeit.net>
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Date: Wed, 16 Sep 2020 18:31:10 -0500
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Subject: [PATCH] drm/i915/fbdev: Discard BIOS framebuffers exceeding hardware
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supported size
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On certain devices with high-DPI panels, the BIOS supplied framebuffer is larger
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than what is physically supported by the panel, resulting in overscan. A previous
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check introduced with edd586fe ("drm/i915: Discard BIOS framebuffers too small to
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accommodate chosen mode"), handles the lower bound case. We extend that check
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to include the upper bound case.
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Signed-off-by: Aun-Ali Zaidi <admin@kodeit.net>
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---
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drivers/gpu/drm/i915/display/intel_fbdev.c | 8 +++++---
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1 file changed, 5 insertions(+), 3 deletions(-)
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diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c
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index bd39eb6a21b8..1949526cbe20 100644
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--- a/drivers/gpu/drm/i915/display/intel_fbdev.c
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+++ b/drivers/gpu/drm/i915/display/intel_fbdev.c
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@@ -181,10 +181,12 @@ static int intelfb_create(struct drm_fb_helper *helper,
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int ret;
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if (intel_fb &&
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- (sizes->fb_width > intel_fb->base.width ||
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- sizes->fb_height > intel_fb->base.height)) {
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+ ((sizes->fb_width > intel_fb->base.width ||
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+ sizes->fb_height > intel_fb->base.height) ||
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+ (sizes->fb_width < intel_fb->base.width ||
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+ sizes->fb_height < intel_fb->base.height))) {
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drm_dbg_kms(&dev_priv->drm,
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- "BIOS fb too small (%dx%d), we require (%dx%d),"
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+ "BIOS fb invalid size (%dx%d), we require (%dx%d),"
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" releasing it\n",
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intel_fb->base.width, intel_fb->base.height,
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sizes->fb_width, sizes->fb_height);
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--
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2.28.0
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