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Commit f928ac0a authored by Stanislaw Gruszka's avatar Stanislaw Gruszka Committed by Linus Torvalds
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atmel_lcdfb: disallow setting larger resolution than the framebuffer memory can handle 



Signed-off-by: default avatarStanislaw Gruszka <stf_xl@wp.pl>
Acked-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
Cc: Krzysztof Helt <krzysztof.h1@wp.pl>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 486ff387

drivers/video/atmel_lcdfb.c

+7 −0
Original line number Diff line number Diff line
@@ -372,6 +372,13 @@ static int atmel_lcdfb_check_var(struct fb_var_screeninfo *var, 
	var->transp.offset = var->transp.length = 0;

	var->xoffset = var->yoffset = 0;



	if (info->fix.smem_len) {

		unsigned int smem_len = (var->xres_virtual * var->yres_virtual

					 * ((var->bits_per_pixel + 7) / 8));

		if (smem_len > info->fix.smem_len)

			return -EINVAL;

	}



	/* Saturate vertical and horizontal timings at maximum values */

	var->vsync_len = min_t(u32, var->vsync_len,

			(ATMEL_LCDC_VPW >> ATMEL_LCDC_VPW_OFFSET) + 1);