Re: [PATCH v2] usb: xhci-pci: Check for errors from dm_pci_map_bar()

On Mon, Jan 18, 2021 at 7:30 PM Pali Rohár pali@kernel.org wrote:

Function dm_pci_map_bar() may fail and returns NULL. Check this to prevent dereferencing a NULL pointer.

In xhci-pci this may happen when board does not enable CONFIG_PCI_PNP and PCI_BASE_ADDRESS_0 contains unconfigured zero address.

Signed-off-by: Pali Rohár pali@kernel.org

drivers/usb/host/xhci-pci.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-)

Reviewed-by: Bin Meng bmeng.cn@gmail.com