clocksource: Mmio: remove artificial 32bit limitation

The EP93xx is registering a clocksource of 40 bits with
clocksource_mmio_init() but this is not working because of this
artificial limitation. It works fine to lift the uppe limit to
64 bits, and since cycle_t is u64, it should intuitively have been
like that from the beginning.

Fixes: 000bc17817bf "ARM: ep93xx: switch to GENERIC_CLOCKEVENTS"
Reported-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: http://lkml.kernel.org/r/1449768101-6879-1-git-send-email-linus.walleij@linaro.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/drivers/clocksource/mmio.c b/drivers/clocksource/mmio.c
index 1593ade2a8154da8840236bd9a0debb931ebfa5a..c4f7d7a9b68987e861bb52ea807f919ca785a1c9 100644 (file)
--- a/drivers/clocksource/mmio.c
+++ b/drivers/clocksource/mmio.c
@@ -55,7 +55,7 @@ int __init clocksource_mmio_init(void __iomem *base, const char *name,
 {
        struct clocksource_mmio *cs;
 
-       if (bits > 32 || bits < 16)
+       if (bits > 64 || bits < 16)
                return -EINVAL;
 
        cs = kzalloc(sizeof(struct clocksource_mmio), GFP_KERNEL);