[PATCH] fb_videomode_to_var: reset virtual screen parameters
fb_videomode_to_var(): reset the virtual screen parameters when converting from an fb_videomode to an fb_var_screeninfo. Without this the old virtual screen parameters are kept. Hence you cannot switch to a video mode with a lower resolution on frame buffer devices that don't support virtual screens and panning, as values are not supposed to be rounded down when they don't fit. I also reordered the assignments to match the order of the individual members. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Cc: James Simmons <jsimmons@infradead.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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1 changed files with 6 additions and 2 deletions
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@ -716,13 +716,17 @@ void fb_videomode_to_var(struct fb_var_screeninfo *var,
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{
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{
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var->xres = mode->xres;
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var->xres = mode->xres;
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var->yres = mode->yres;
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var->yres = mode->yres;
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var->xres_virtual = mode->xres;
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var->yres_virtual = mode->yres;
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var->xoffset = 0;
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var->yoffset = 0;
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var->pixclock = mode->pixclock;
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var->pixclock = mode->pixclock;
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var->left_margin = mode->left_margin;
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var->left_margin = mode->left_margin;
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var->hsync_len = mode->hsync_len;
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var->vsync_len = mode->vsync_len;
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var->right_margin = mode->right_margin;
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var->right_margin = mode->right_margin;
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var->upper_margin = mode->upper_margin;
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var->upper_margin = mode->upper_margin;
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var->lower_margin = mode->lower_margin;
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var->lower_margin = mode->lower_margin;
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var->hsync_len = mode->hsync_len;
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var->vsync_len = mode->vsync_len;
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var->sync = mode->sync;
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var->sync = mode->sync;
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var->vmode = mode->vmode & FB_VMODE_MASK;
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var->vmode = mode->vmode & FB_VMODE_MASK;
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}
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}
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