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| author | Christopher Friedt <chrisfriedt@gmail.com> | 2014-02-01 10:01:15 -0500 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2014-04-30 16:23:25 +0100 |
| commit | 8dd0cd27909f04ddb5ffb7da306643da45f42b60 (patch) | |
| tree | 41b5e076058eda2de13cffea6ebd589b06abb890 /drivers/gpu/drm | |
| parent | 078a6830af35e480d2882ad08cede954bb84ad64 (diff) | |
| download | kernel_samsung_smdk4412-8dd0cd27909f04ddb5ffb7da306643da45f42b60.zip kernel_samsung_smdk4412-8dd0cd27909f04ddb5ffb7da306643da45f42b60.tar.gz kernel_samsung_smdk4412-8dd0cd27909f04ddb5ffb7da306643da45f42b60.tar.bz2 | |
drm/vmwgfx: correct fb_fix_screeninfo.line_length
commit aa6de142c901cd2d90ef08db30ae87da214bedcc upstream.
Previously, the vmwgfx_fb driver would allow users to call FBIOSET_VINFO, but it would not adjust
the FINFO properly, resulting in distorted screen rendering. The patch corrects that behaviour.
See https://bugs.gentoo.org/show_bug.cgi?id=494794 for examples.
Signed-off-by: Christopher Friedt <chrisfriedt@gmail.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_fb.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c index 34e51a1..907c26f 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c @@ -147,7 +147,7 @@ static int vmw_fb_check_var(struct fb_var_screeninfo *var, } if (!vmw_kms_validate_mode_vram(vmw_priv, - info->fix.line_length, + var->xres * var->bits_per_pixel/8, var->yoffset + var->yres)) { DRM_ERROR("Requested geom can not fit in framebuffer\n"); return -EINVAL; @@ -162,6 +162,8 @@ static int vmw_fb_set_par(struct fb_info *info) struct vmw_private *vmw_priv = par->vmw_priv; int ret; + info->fix.line_length = info->var.xres * info->var.bits_per_pixel/8; + ret = vmw_kms_write_svga(vmw_priv, info->var.xres, info->var.yres, info->fix.line_length, par->bpp, par->depth); @@ -177,6 +179,7 @@ static int vmw_fb_set_par(struct fb_info *info) vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, info->var.yoffset); vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, info->var.xres); vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, info->var.yres); + vmw_write(vmw_priv, SVGA_REG_BYTES_PER_LINE, info->fix.line_length); vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID); } |