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lxfb: properly alloc cmap in all cases and don't leak the memory

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We weren't properly allocating the cmap for depths greater than 8bpp,
which caused pain for things like DirectFB.  Also, we never freed the cmap
memory upon module unload..

[dilinger@debian.org: dropped unnecessary code and clean up patch]
[dilinger@debian.org: add error checking and handling]
Signed-off-by: Andres Salomon <dilinger@debian.org>
Cc: Jordan Crouse <jordan@cosmicpenguin.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Marco La Porta 2009-02-11 13:04:20 -08:00 committed by Linus Torvalds
parent 57f63bc8fe
commit 067f1293cc
1 changed files with 11 additions and 6 deletions
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17
drivers/video/geode/lxfb_core.c
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@ -278,13 +278,10 @@ static int lxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
static int lxfb_set_par(struct fb_info *info)
{
if (info->var.bits_per_pixel > 8) {
if (info->var.bits_per_pixel > 8)
info->fix.visual = FB_VISUAL_TRUECOLOR;
fb_dealloc_cmap(&info->cmap);
} else {
else
info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
fb_alloc_cmap(&info->cmap, 1<<info->var.bits_per_pixel, 0);
}
info->fix.line_length = lx_get_pitch(info->var.xres,
info->var.bits_per_pixel);
@ -451,6 +448,11 @@ static struct fb_info * __init lxfb_init_fbinfo(struct device *dev)
info->pseudo_palette = (void *)par + sizeof(struct lxfb_par);
if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
framebuffer_release(info);
return NULL;
}
info->var.grayscale = 0;
return info;
@ -579,8 +581,10 @@ err:
pci_release_region(pdev, 3);
}
if (info)
if (info) {
fb_dealloc_cmap(&info->cmap);
framebuffer_release(info);
}
return ret;
}
@ -604,6 +608,7 @@ static void lxfb_remove(struct pci_dev *pdev)
iounmap(par->vp_regs);
pci_release_region(pdev, 3);
fb_dealloc_cmap(&info->cmap);
pci_set_drvdata(pdev, NULL);
framebuffer_release(info);
}