gxfb: properly alloc cmap and plug cmap leak

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..

Signed-off-by: Andres Salomon <dilinger@debian.org>
Cc: Marco La Porta <marco-laporta@tiscali.it>
Cc: Jordan Crouse <jordan@cosmicpenguin.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 11 insertions, 6 deletions

diff --git a/drivers/video/geode/gxfb_core.c b/drivers/video/geode/gxfb_core.c
index 484118926318..2552cac39e1c 100644
--- a/drivers/video/geode/gxfb_core.c
+++ b/drivers/video/geode/gxfb_core.c
@@ -171,13 +171,10 @@ static int gxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 
 static int gxfb_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 = gx_line_delta(info->var.xres, info->var.bits_per_pixel);
 
@@ -331,6 +328,11 @@ static struct fb_info * __init gxfb_init_fbinfo(struct device *dev)
 
         info->var.grayscale     = 0;
 
+        if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
+                framebuffer_release(info);
+                return NULL;
+        }
+
         return info;
 }
 
@@ -443,8 +445,10 @@ static int __init gxfb_probe(struct pci_dev *pdev, const struct pci_device_id *i
                 pci_release_region(pdev, 1);
         }
 
-        if (info)
+        if (info) {
+                fb_dealloc_cmap(&info->cmap);
                 framebuffer_release(info);
+        }
         return ret;
 }
 
@@ -467,6 +471,7 @@ static void gxfb_remove(struct pci_dev *pdev)
         iounmap(par->gp_regs);
         pci_release_region(pdev, 1);
 
+        fb_dealloc_cmap(&info->cmap);
         pci_set_drvdata(pdev, NULL);
 
         framebuffer_release(info);