[PATCH 2/2] atmel_lcdfb: Disallow to set larger resolution than framebuffer memory can handle
flat view
STALE6606d
From: Stanislaw Gruszka <stf_xl@wp.pl>
Date: 2008-09-03 13:36:48
Subsystem:
framebuffer layer, the rest · Maintainers:
Helge Deller, Linus Torvalds
Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl> CC: Nicolas Ferre <redacted> --- drivers/video/atmel_lcdfb.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c
index 3376f35..5d6cf33 100644
--- a/drivers/video/atmel_lcdfb.c
+++ b/drivers/video/atmel_lcdfb.c@@ -342,6 +342,13 @@ 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);
--
1.5.2.5
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