Messages in this thread | | | Subject | Re: [v1] mmc: host: dw_mmc-pci:- Handle return NULL error from pcim_iomap_table | From | arvind Yadav <> | Date | Thu, 22 Dec 2016 22:42:49 +0530 |
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Ignore this change. Sorry for noise.
Thanks -Arvind
On Thursday 22 December 2016 05:36 PM, Arvind Yadav wrote: > 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@gmail.com> > --- > 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); >
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