[PATCH] net: starfire: fix ioaddr sign-extension causing ioremap() failure

[PATCH] net: starfire: fix ioaddr sign-extension causing ioremap() failure

[Ivy Lopez]

ioaddr is declared as a signed long, but is assigned the result of
pci_resource_start(), which returns an unsigned resource_size_t.
On configurations where the BAR address has its high bit set, the
value sign-extends when passed to ioremap(), producing a bogus
64-bit address and causing device probe to fail:

  ioremap: invalid physical address fffffffffe480000
  starfire 0000:08:04.0: cannot Remap 0x80000 @ 0xfe480000, aborting

Change ioaddr to unsigned long so pci_resource_start()'s value is
preserved correctly.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=198035
Signed-off-by: Ivy Lopez <skunkolee@gmail.com>

Signed-off-by: Ivy Lopez <skunkolee@gmail.com>
---
 drivers/net/ethernet/adaptec/starfire.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/adaptec/starfire.c b/drivers/net/ethernet/adaptec/starfire.c
index f1109d90e1fc..b72b393e6fb2 100644
--- a/drivers/net/ethernet/adaptec/starfire.c
+++ b/drivers/net/ethernet/adaptec/starfire.c
@@ -634,7 +634,7 @@ static int starfire_init_one(struct pci_dev *pdev,
 	int i, irq, chip_idx = ent->driver_data;
 	struct net_device *dev;
 	u8 addr[ETH_ALEN];
-	long ioaddr;
+	unsigned long ioaddr;
 	void __iomem *base;
 	int drv_flags, io_size;
 	int boguscnt;
-- 
2.55.0