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authorAristeu Rozanski <aris@redhat.com>2013-12-05 19:37:56 +0400
committerBorislav Petkov <bp@suse.de>2013-12-21 16:26:57 +0400
commit90ed4988b8c030d65b41b7d13140e9376dc6ec5a (patch)
tree86cc49276f2f013355de12c9c18812582801d838 /drivers/edac/e752x_edac.c
parent8112c0cdf7b86f5917cdffcff4ffc477eaa62ed4 (diff)
downloadlinux-90ed4988b8c030d65b41b7d13140e9376dc6ec5a.tar.xz
e752x_edac: Fix pci_dev usage count
In case the device 0, function 1 is not found using pci_get_device(), pci_scan_single_device() will be used but, differently than pci_get_device(), it allocates a pci_dev but doesn't does bump the usage count on the pci_dev and after few module removals and loads the pci_dev will be freed. Signed-off-by: Aristeu Rozanski <aris@redhat.com> Reviewed-by: mark gross <mark.gross@intel.com> Link: http://lkml.kernel.org/r/20131205153755.GL4545@redhat.com Signed-off-by: Borislav Petkov <bp@suse.de>
Diffstat (limited to 'drivers/edac/e752x_edac.c')
-rw-r--r--drivers/edac/e752x_edac.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/edac/e752x_edac.c b/drivers/edac/e752x_edac.c
index 5fb01b03773a..92d54fa65f93 100644
--- a/drivers/edac/e752x_edac.c
+++ b/drivers/edac/e752x_edac.c
@@ -1182,9 +1182,11 @@ static int e752x_get_devs(struct pci_dev *pdev, int dev_idx,
pvt->bridge_ck = pci_get_device(PCI_VENDOR_ID_INTEL,
pvt->dev_info->err_dev, pvt->bridge_ck);
- if (pvt->bridge_ck == NULL)
+ if (pvt->bridge_ck == NULL) {
pvt->bridge_ck = pci_scan_single_device(pdev->bus,
PCI_DEVFN(0, 1));
+ pci_dev_get(pvt->bridge_ck);
+ }
if (pvt->bridge_ck == NULL) {
e752x_printk(KERN_ERR, "error reporting device not found:"