clocksource: pass clocksource to read() callback

Pass clocksource pointer to the read() callback for clocksources.  This
allows us to share the callback between multiple instances.

[hugh@veritas.com: fix powerpc build of clocksource pass clocksource mods]
[akpm@linux-foundation.org: cleanup]
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: John Stultz <johnstul@us.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 6 insertions, 6 deletions

diff --git a/drivers/clocksource/acpi_pm.c b/drivers/clocksource/acpi_pm.c
index ee19b6e8fcb4..40bd8c61c7d7 100644
--- a/drivers/clocksource/acpi_pm.c
+++ b/drivers/clocksource/acpi_pm.c
@@ -57,7 +57,7 @@ u32 acpi_pm_read_verified(void)
         return v2;
 }
 
-static cycle_t acpi_pm_read(void)
+static cycle_t acpi_pm_read(struct clocksource *cs)
 {
         return (cycle_t)read_pmtmr();
 }
@@ -83,7 +83,7 @@ static int __init acpi_pm_good_setup(char *__str)
 }
 __setup("acpi_pm_good", acpi_pm_good_setup);
 
-static cycle_t acpi_pm_read_slow(void)
+static cycle_t acpi_pm_read_slow(struct clocksource *cs)
 {
         return (cycle_t)acpi_pm_read_verified();
 }
@@ -156,9 +156,9 @@ static int verify_pmtmr_rate(void)
         unsigned long count, delta;
 
         mach_prepare_counter();
-        value1 = clocksource_acpi_pm.read();
+        value1 = clocksource_acpi_pm.read(&clocksource_acpi_pm);
         mach_countup(&count);
-        value2 = clocksource_acpi_pm.read();
+        value2 = clocksource_acpi_pm.read(&clocksource_acpi_pm);
         delta = (value2 - value1) & ACPI_PM_MASK;
 
         /* Check that the PMTMR delta is within 5% of what we expect */
@@ -195,9 +195,9 @@ static int __init init_acpi_pm_clocksource(void)
         /* "verify" this timing source: */
         for (j = 0; j < ACPI_PM_MONOTONICITY_CHECKS; j++) {
                 udelay(100 * j);
-                value1 = clocksource_acpi_pm.read();
+                value1 = clocksource_acpi_pm.read(&clocksource_acpi_pm);
                 for (i = 0; i < ACPI_PM_READ_CHECKS; i++) {
-                        value2 = clocksource_acpi_pm.read();
+                        value2 = clocksource_acpi_pm.read(&clocksource_acpi_pm);
                         if (value2 == value1)
                                 continue;
                         if (value2 > value1)