Subject: x86_64: hpet restore vread
>From Sébastien Dugué <[email protected]>
It seems the hpet clocksource's vread method was lost in the x86_64
conversion to clockevents. So here it is.
Signed-off-by: Sébastien Dugué <[email protected]>
Signed-off-by: Thomas Gleixner <tglx@linutronix,de>
arch/i386/kernel/hpet.c | 10 ++++++++++
1 file changed, 10 insertions(+)
Index: linux-2.6.22-rc4-mm/arch/i386/kernel/hpet.c
===================================================================
--- linux-2.6.22-rc4-mm.orig/arch/i386/kernel/hpet.c 2007-06-11 21:19:11.000000000 +0200
+++ linux-2.6.22-rc4-mm/arch/i386/kernel/hpet.c 2007-06-11 21:20:14.000000000 +0200
@@ -255,6 +255,13 @@ static cycle_t read_hpet(void)
return (cycle_t)hpet_readl(HPET_COUNTER);
}
+#ifdef CONFIG_X86_64
+static cycle_t __vsyscall_fn vread_hpet(void)
+{
+ return readl((const void __iomem *)fix_to_virt(VSYSCALL_HPET) + 0xf0);
+}
+#endif
+
static struct clocksource clocksource_hpet = {
.name = "hpet",
.rating = 250,
@@ -263,6 +270,9 @@ static struct clocksource clocksource_hp
.shift = HPET_SHIFT,
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
.resume = hpet_start_counter,
+#ifdef CONFIG_X86_64
+ .vread = vread_hpet,
+#endif
};
/*
-
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