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[PATCH] intelfb: Fix freeing of nonexistent resource

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Fix intelfb trying to free a non-existent resource in its error path.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Antonino A. Daplas 2005-12-19 15:11:40 +08:00 committed by Linus Torvalds
parent 6ee7fb7e36
commit 4b3760ce3d
2 changed files with 12 additions and 2 deletions
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5
drivers/video/intelfb/intelfb.h
View File

@ -41,6 +41,10 @@
/*** hw-related values ***/
/* Resource Allocation */
#define INTELFB_FB_ACQUIRED 1
#define INTELFB_MMIO_ACQUIRED 2
/* PCI ids for supported devices */
#define PCI_DEVICE_ID_INTEL_830M 0x3577
#define PCI_DEVICE_ID_INTEL_845G 0x2562
@ -257,6 +261,7 @@ struct intelfb_info {
int hwcursor;
int fixed_mode;
int ring_active;
int flag;
/* hw cursor */
int cursor_on;

9
drivers/video/intelfb/intelfbdrv.c
View File

@ -473,9 +473,9 @@ cleanup(struct intelfb_info *dinfo)
if (dinfo->aperture.virtual)
iounmap((void __iomem *)dinfo->aperture.virtual);
if (dinfo->mmio_base_phys)
if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
if (dinfo->aperture.physical)
if (dinfo->flag & INTELFB_FB_ACQUIRED)
release_mem_region(dinfo->aperture.physical,
dinfo->aperture.size);
framebuffer_release(dinfo->info);
@ -572,6 +572,9 @@ intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
cleanup(dinfo);
return -ENODEV;
}
dinfo->flag |= INTELFB_FB_ACQUIRED;
if (!request_mem_region(dinfo->mmio_base_phys,
INTEL_REG_SIZE,
INTELFB_MODULE_NAME)) {
@ -580,6 +583,8 @@ intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
return -ENODEV;
}
dinfo->flag |= INTELFB_MMIO_ACQUIRED;
/* Get the chipset info. */
dinfo->pci_chipset = pdev->device;