hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/video/geode/lxfb_core.c
View File

@ -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) 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; info->fix.visual = FB_VISUAL_TRUECOLOR;
fb_dealloc_cmap(&info->cmap); else
} else {
info->fix.visual = FB_VISUAL_PSEUDOCOLOR; 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->fix.line_length = lx_get_pitch(info->var.xres,
info->var.bits_per_pixel); 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); 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; info->var.grayscale = 0;
return info; return info;
@ -579,8 +581,10 @@ err:
pci_release_region(pdev, 3); pci_release_region(pdev, 3);
} }
if (info) if (info) {
fb_dealloc_cmap(&info->cmap);
framebuffer_release(info); framebuffer_release(info);
}
return ret; return ret;
} }
@ -604,6 +608,7 @@ static void lxfb_remove(struct pci_dev *pdev)
iounmap(par->vp_regs); iounmap(par->vp_regs);
pci_release_region(pdev, 3); pci_release_region(pdev, 3);
fb_dealloc_cmap(&info->cmap);
pci_set_drvdata(pdev, NULL); pci_set_drvdata(pdev, NULL);
framebuffer_release(info); framebuffer_release(info);
} }