24 lines
1.1 KiB
Diff
24 lines
1.1 KiB
Diff
sprdfb_check_var() has two problems:
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I) it is not buffering-aware, which all Spreadtrum devices use;
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II) it checks values that are already in yres_virtual, not those that we
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are trying to overwrite.
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Those problems stop X11 and charging-sdl from working properly.
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X11 error:
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(EE) FBDEV(0): FBIOPUT_VSCREENINFO: Invalid argument
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This patch fixes first problem, however, the correct way is fixing
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the second one, as this might have less side effects.
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diff --git a/drivers/video/sprdfb/sprdfb_main.c b/drivers/video/sprdfb/sprdfb_main.c
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index 43876285..751616a1 100644
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--- a/drivers/video/sprdfb/sprdfb_main.c
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+++ b/drivers/video/sprdfb/sprdfb_main.c
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@@ -531,7 +531,8 @@ static int sprdfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fb)
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if ((var->xres != fb->var.xres) ||
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(var->yres != fb->var.yres) ||
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(var->xres_virtual != fb->var.xres_virtual) ||
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- (var->yres_virtual != fb->var.yres_virtual) ||
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+ // (var->yres_virtual != fb->var.yres_virtual) ||
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+ (fb->var.yres_virtual % var->yres_virtual != 0) ||
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(var->xoffset != fb->var.xoffset) ||
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#ifndef BIT_PER_PIXEL_SURPPORT
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(var->bits_per_pixel != fb->var.bits_per_pixel) ||
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