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video: fbdev: stifb: handle NULL return value from ioremap_nocache
Add missing error check for ioremap_nocache() failure (prevents NULL pointer dereference on error). Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> [b.zolnierkie: minor fixes] Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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@ -1294,6 +1294,10 @@ static int __init stifb_init_fb(struct sti_struct *sti, int bpp_pref)
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strcpy(fix->id, "stifb");
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info->fbops = &stifb_ops;
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info->screen_base = ioremap_nocache(REGION_BASE(fb,1), fix->smem_len);
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if (!info->screen_base) {
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printk(KERN_ERR "stifb: failed to map memory\n");
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goto out_err0;
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}
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info->screen_size = fix->smem_len;
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info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA;
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info->pseudo_palette = &fb->pseudo_palette;
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