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a455178e59
Function pci_ioremap_bar() will return a NULL pointer if there is no enough memory. However, in function apci3xxx_auto_attach(), the return value of function pci_ioremap_bar() is not validated. This may result in NULL dereference in following access to dev->mmio. This patch fixes the bug. Signed-off-by: Pan Bian <bianpan2016@163.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>