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mfd: omap-usb-tll: Fix register offsets

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[ Upstream commit 993dc737c0 ]

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: 16fa3dc75c ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Arnd Bergmann
2017-08-23 16:44:51 +02:00
committed by Greg Kroah-Hartman
parent a1877fd325
commit f1a9886ddd
1 changed files with 2 additions and 2 deletions
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4
drivers/mfd/omap-usb-tll.c
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@@ -129,12 +129,12 @@ static inline u32 usbtll_read(void __iomem *base, u32 reg)
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);
}