[PATCH] calgary: phb_shift can be int

Signed-off-by: NMuli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: NJon Mason <jdmason@kudzu.us>
Signed-off-by: NAndi Kleen <ak@suse.de>

arch/x86_64/kernel/pci-calgary.c

@@ -740,7 +740,7 @@ static void __init calgary_increase_split_completion_timeout(void __iomem *bbar,
 {
 	u64 val64;
 	void __iomem *target;
-	unsigned long phb_shift = -1;
+	unsigned int phb_shift = ~0; /* silence gcc */
 	u64 mask;
 
 	switch (busno_to_phbid(busnum)) {