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path: root/drivers/platform/x86/p2sb.c
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Diffstat (limited to 'drivers/platform/x86/p2sb.c')
-rw-r--r--drivers/platform/x86/p2sb.c18
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/platform/x86/p2sb.c b/drivers/platform/x86/p2sb.c
index fb2e141f3eb8..384d0962ae93 100644
--- a/drivers/platform/x86/p2sb.c
+++ b/drivers/platform/x86/p2sb.c
@@ -42,10 +42,24 @@ static int p2sb_get_devfn(unsigned int *devfn)
return 0;
}
+/* Copy resource from the first BAR of the device in question */
static int p2sb_read_bar0(struct pci_dev *pdev, struct resource *mem)
{
- /* Copy resource from the first BAR of the device in question */
- *mem = pdev->resource[0];
+ struct resource *bar0 = &pdev->resource[0];
+
+ /* Make sure we have no dangling pointers in the output */
+ memset(mem, 0, sizeof(*mem));
+
+ /*
+ * We copy only selected fields from the original resource.
+ * Because a PCI device will be removed soon, we may not use
+ * any allocated data, hence we may not copy any pointers.
+ */
+ mem->start = bar0->start;
+ mem->end = bar0->end;
+ mem->flags = bar0->flags;
+ mem->desc = bar0->desc;
+
return 0;
}