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sm501fb: use display information in info not in var for panning 

We must not use any information in the passed var besides xoffset,
yoffset and vmode as otherwise applications might abuse it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
hifive-unleashed-5.1
Laurent Pinchart 2011-05-25 11:34:52 +02:00
parent 8e42a962a2
commit 0aa76b0ce1
1 changed files with 3 additions and 3 deletions
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6
drivers/video/sm501fb.c
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@ -582,7 +582,7 @@ static int sm501fb_pan_crt(struct fb_var_screeninfo *var,
{
struct sm501fb_par *par = info->par;
struct sm501fb_info *fbi = par->info;
unsigned int bytes_pixel = var->bits_per_pixel / 8;
unsigned int bytes_pixel = info->var.bits_per_pixel / 8;
unsigned long reg;
unsigned long xoffs;
@ -614,10 +614,10 @@ static int sm501fb_pan_pnl(struct fb_var_screeninfo *var,
struct sm501fb_info *fbi = par->info;
unsigned long reg;
reg = var->xoffset | (var->xres_virtual << 16);
reg = var->xoffset | (info->var.xres_virtual << 16);
smc501_writel(reg, fbi->regs + SM501_DC_PANEL_FB_WIDTH);
reg = var->yoffset | (var->yres_virtual << 16);
reg = var->yoffset | (info->var.yres_virtual << 16);
smc501_writel(reg, fbi->regs + SM501_DC_PANEL_FB_HEIGHT);
sm501fb_sync_regs(fbi);