[PATCH v2] 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 resource_size_t, matching both the return type of
pci_resource_start() and the type ioremap() expects for its physical
address argument, rather than unsigned long, which is not guaranteed
to be wide enough on all configurations. Switch the associated error
print to %pa accordingly.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=198035
Signed-off-by: Ivy Lopez <skunkolee@xxxxxxxxx>
---
v2: use resource_size_t instead of unsigned long, and switch the
    error print to %pa, per Simon Horman's review.
---
 drivers/net/ethernet/adaptec/starfire.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/adaptec/starfire.c b/drivers/net/ethernet/adaptec/starfire.c
index b72b393e6fb2..b2f3998e128b 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];
-	unsigned long ioaddr;
+	resource_size_t ioaddr;
 	void __iomem *base;
 	int drv_flags, io_size;
 	int boguscnt;
@@ -664,8 +664,8 @@ static int starfire_init_one(struct pci_dev *pdev,
 
 	base = ioremap(ioaddr, io_size);
 	if (!base) {
-		dev_err(d, "cannot remap %#x @ %#lx, aborting\n",
-			io_size, ioaddr);
+		dev_err(d, "cannot remap %#x @ %pa, aborting\n",
+			io_size, &ioaddr);
 		goto err_out_free_res;
 	}
 
-- 
2.55.0