From 993dc737c0996c163325961fb62a0ed9fd0308b4 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Wed, 23 Aug 2017 16:44:51 +0200
Subject: [PATCH] mfd: omap-usb-tll: Fix register offsets
Git-commit: 993dc737c0996c163325961fb62a0ed9fd0308b4
Patch-mainline: v4.14-rc1
References: bsc#1051510

gcc-8 notices that the register number calculation is wrong
when the offset is an 'u8' but the number is larger than 256:

Drivers/mfd/omap-usb-tll.c: In function 'omap_tll_init':
drivers/mfd/omap-usb-tll.c:90:46: error: overflow in conversion from 'int' to 'u8 {aka unsigned char}' chages value from 'i * 256 + 2070' to '22' [-Werror=overflow]

This addresses it by always using a 32-bit offset number for
the register. This is apparently an old problem that previous
compilers did not find.

Fixes: 16fa3dc75c22 ("mfd: omap-usb-tll: HOST TLL platform driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/mfd/omap-usb-tll.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/mfd/omap-usb-tll.c
+++ b/drivers/mfd/omap-usb-tll.c
@@ -131,12 +131,12 @@ static inline u32 usbtll_read(void __iom
 	return readl_relaxed(base + reg);
 }
 
-static inline void usbtll_writeb(void __iomem *base, u8 reg, u8 val)
+static inline void usbtll_writeb(void __iomem *base, u32 reg, u8 val)
 {
 	writeb_relaxed(val, base + reg);
 }
 
-static inline u8 usbtll_readb(void __iomem *base, u8 reg)
+static inline u8 usbtll_readb(void __iomem *base, u32 reg)
 {
 	return readb_relaxed(base + reg);
 }