pcnet32: Use pci_resource_len to validate PCI resource
authorGuenter Roeck <linux@roeck-us.net>
Tue, 6 Apr 2021 04:29:22 +0000 (21:29 -0700)
committerDavid S. Miller <davem@davemloft.net>
Tue, 6 Apr 2021 23:30:17 +0000 (16:30 -0700)
commit66c3f05ddc538ee796321210c906b6ae6fc0792a
tree19a45d6949a32502e86400b06ecf1c333d5029eb
parent2a2403ca3add03f542f6b34bef9f74649969b06d
pcnet32: Use pci_resource_len to validate PCI resource

pci_resource_start() is not a good indicator to determine if a PCI
resource exists or not, since the resource may start at address 0.
This is seen when trying to instantiate the driver in qemu for riscv32
or riscv64.

pci 0000:00:01.0: reg 0x10: [io  0x0000-0x001f]
pci 0000:00:01.0: reg 0x14: [mem 0x00000000-0x0000001f]
...
pcnet32: card has no PCI IO resources, aborting

Use pci_resouce_len() instead.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/amd/pcnet32.c