tree 20561a7ed203836147c9f9070f2dd550e42eb626
parent 4a3ae07413844733e4cb3765f67a752b846df913
author Xiubo Li <Li.Xiubo@freescale.com> 1398219120 +0800
committer Daniel Lezcano <daniel.lezcano@linaro.org> 1400829580 +0200

clocksource: Fix clocksource_mmio_readX_down

For some clocksource devices, for example, the registers are 32-bit, while
the lower 16-bit is used for timer counting(And reading the upper 16-bit
will return 0).

For example, when the counter value is 0x00001111, and then the
~readl_relaxed(to_mmio_clksrc(c)->reg) will return the value of 0xFFFFEEEE,
but it should be 0x0000EEEE.

So just using the c->mask to mask the unused bits.

Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>