Here, If pcim_iomap_table will fail. It will return NULL. Kernel can run into a NULL-pointer dereference. This error check will avoid NULL pointer dereference. Signed-off-by: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx> --- drivers/mmc/host/dw_mmc-pci.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/mmc/host/dw_mmc-pci.c b/drivers/mmc/host/dw_mmc-pci.c index ab82796..f42d302 100644 --- a/drivers/mmc/host/dw_mmc-pci.c +++ b/drivers/mmc/host/dw_mmc-pci.c @@ -61,6 +61,8 @@ static int dw_mci_pci_probe(struct pci_dev *pdev, return ret; host->regs = pcim_iomap_table(pdev)[PCI_BAR_NO]; + if (!host->regs) + return -ENOMEM; pci_set_master(pdev); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
