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Commit 272f1dfa authored by Boris Brezillon's avatar Boris Brezillon Committed by Nicolas Ferre
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rtc: at91sam9: use standard readl/writel functions instead of raw versions 



Raw versions of writel and writel should not be directly used and should
be replaced by their relaxed versions (readl/writel_relaxed), which take
endianness conversion into account.

In this driver we prefer the standard readl/writel function which add the
appropriate memory barrier around the access (the performance penalty is
negligible for this kind of application).

Signed-off-by: default avatarBoris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: default avatarJohan Hovold <johan@kernel.org>
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
parent 6575bd7c

drivers/rtc/rtc-at91sam9.c

+4 −4
Original line number Diff line number Diff line
@@ -77,14 +77,14 @@ struct sam9_rtc { 
};



#define rtt_readl(rtc, field) \

	__raw_readl((rtc)->rtt + AT91_RTT_ ## field)

	readl((rtc)->rtt + AT91_RTT_ ## field)

#define rtt_writel(rtc, field, val) \

	__raw_writel((val), (rtc)->rtt + AT91_RTT_ ## field)

	writel((val), (rtc)->rtt + AT91_RTT_ ## field)



#define gpbr_readl(rtc) \

	__raw_readl((rtc)->gpbr)

	readl((rtc)->gpbr)

#define gpbr_writel(rtc, val) \

	__raw_writel((val), (rtc)->gpbr)

	writel((val), (rtc)->gpbr)



/*

 * Read current time and date in RTC