[PATCH 1/2] fb: fix atyfb build warning

[Randy Dunlap]

From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>

Fix build warning when neither of CONFIG_FB_ATY_GX or
CONFIG_FB_ATY_CT is enabled, since ARRAY_SIZE(aty_chips) is 0 in
that case.

drivers/video/aty/atyfb_base.c:437:11: warning: overflow in implicit constant conversion [-Woverflow]

Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc:	Paul Mackerras <paulus@xxxxxxxxx>
Cc:	Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc:	linux-fbdev@xxxxxxxxxxxxxxx
Cc:	Jean-Christophe Plagniol-Villard <plagnioj@xxxxxxxxxxxx>
Cc:	Tomi Valkeinen <tomi.valkeinen@xxxxxx>
---
 drivers/video/aty/atyfb_base.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- linux-next-20130619.orig/drivers/video/aty/atyfb_base.c
+++ linux-next-20130619/drivers/video/aty/atyfb_base.c
@@ -434,8 +434,8 @@ static int correct_chipset(struct atyfb_
 	const char *name;
 	int i;
 
-	for (i = ARRAY_SIZE(aty_chips) - 1; i >= 0; i--)
-		if (par->pci_id == aty_chips[i].pci_id)
+	for (i = ARRAY_SIZE(aty_chips); i > 0; i--)
+		if (par->pci_id == aty_chips[i - 1].pci_id)
 			break;
 
 	if (i < 0)
--
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