diff options
Diffstat (limited to 'drivers/video/s3fb.c')
| -rw-r--r-- | drivers/video/s3fb.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/drivers/video/s3fb.c b/drivers/video/s3fb.c index d11735895a01..7d53bc23b9c7 100644 --- a/drivers/video/s3fb.c +++ b/drivers/video/s3fb.c @@ -400,11 +400,17 @@ static int s3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) { struct s3fb_info *par = info->par; int rv, mem, step; + u16 m, n, r; /* Find appropriate format */ rv = svga_match_format (s3fb_formats, var, NULL); - if ((rv < 0) || ((par->chip == CHIP_988_VIRGE_VX) ? (rv == 7) : (rv == 6))) - { /* 24bpp on VIRGE VX, 32bpp on others */ + + /* 32bpp mode is not supported on VIRGE VX, + 24bpp is not supported on others */ + if ((par->chip == CHIP_988_VIRGE_VX) ? (rv == 7) : (rv == 6)) + rv = -EINVAL; + + if (rv < 0) { printk(KERN_ERR "fb%d: unsupported mode requested\n", info->node); return rv; } @@ -422,20 +428,26 @@ static int s3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) /* Check whether have enough memory */ mem = ((var->bits_per_pixel * var->xres_virtual) >> 3) * var->yres_virtual; - if (mem > info->screen_size) - { + if (mem > info->screen_size) { printk(KERN_ERR "fb%d: not enough framebuffer memory (%d kB requested , %d kB available)\n", info->node, mem >> 10, (unsigned int) (info->screen_size >> 10)); return -EINVAL; } rv = svga_check_timings (&s3_timing_regs, var, info->node); - if (rv < 0) - { + if (rv < 0) { printk(KERN_ERR "fb%d: invalid timings requested\n", info->node); return rv; } + rv = svga_compute_pll(&s3_pll, PICOS2KHZ(var->pixclock), &m, &n, &r, + info->node); + if (rv < 0) { + printk(KERN_ERR "fb%d: invalid pixclock value requested\n", + info->node); + return rv; + } + return 0; } |