From 82235e9170f19fa327361ee82a76618e60f2db47 Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 28 Apr 2005 10:43:52 +0100 Subject: [PATCH] ARM: Fix AMBA CLCD fb driver for 32bpp We were supporting 24bpp. However, the pixel organisation in memory was 0RGB, so it was 24bpp in 32bit words. This means we're actually supporting 32bpp and not 24bpp. Also, add a check to ensure that we don't exceed the available framebuffer when changing display resolutions. Signed-off-by: Russell King --- drivers/video/amba-clcd.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'drivers/video/amba-clcd.c') diff --git a/drivers/video/amba-clcd.c b/drivers/video/amba-clcd.c index 075d3961a11..3e386fd4c5c 100644 --- a/drivers/video/amba-clcd.c +++ b/drivers/video/amba-clcd.c @@ -146,7 +146,7 @@ clcdfb_set_bitfields(struct clcd_fb *fb, struct fb_var_screeninfo *var) var->blue.offset = 10; } break; - case 24: + case 32: if (fb->panel->cntl & CNTL_LCDTFT) { var->red.length = 8; var->green.length = 8; @@ -178,6 +178,12 @@ static int clcdfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) if (fb->board->check) ret = fb->board->check(fb, var); + + if (ret == 0 && + var->xres_virtual * var->bits_per_pixel / 8 * + var->yres_virtual > fb->fb.fix.smem_len) + ret = -EINVAL; + if (ret == 0) ret = clcdfb_set_bitfields(fb, var); -- cgit v1.2.3