[PATCH] clocksource: fixup ux500 build problems
Linus Walleij
linus.walleij at linaro.org
Mon Oct 3 03:30:20 EDT 2011
Based on a patch from Arnd Bergmann this fixes up the build
problem of assigning a non-existing global when the ux500 PRCMU
timer is not linked in by passing its base address to the init
function. We also add a missing <linux/errno.h> inclusion and
staticize the dummy function.
Cc: Arnd Bergmann <arnd at arndb.de>
Signed-off-by: Linus Walleij <linus.walleij at linaro.org>
---
arch/arm/mach-ux500/timer.c | 9 ++++++---
drivers/clocksource/clksrc-dbx500-prcmu.c | 6 ++++--
include/linux/clksrc-dbx500-prcmu.h | 6 ++----
3 files changed, 12 insertions(+), 9 deletions(-)
diff --git a/arch/arm/mach-ux500/timer.c b/arch/arm/mach-ux500/timer.c
index 08c55a5..aea467d 100644
--- a/arch/arm/mach-ux500/timer.c
+++ b/arch/arm/mach-ux500/timer.c
@@ -5,6 +5,7 @@
* Author: Mattias Wallin <mattias.wallin at stericsson.com> for ST-Ericsson
*/
#include <linux/io.h>
+#include <linux/errno.h>
#include <linux/clksrc-dbx500-prcmu.h>
#include <asm/localtimer.h>
@@ -16,18 +17,20 @@
static void __init ux500_timer_init(void)
{
+ void __iomem *prcmu_timer_base;
+
if (cpu_is_u5500()) {
#ifdef CONFIG_LOCAL_TIMERS
twd_base =3D __io_address(U5500_TWD_BASE);
#endif
mtu_base =3D __io_address(U5500_MTU0_BASE);
- clksrc_dbx500_timer_base =3D
__io_address(U5500_PRCMU_TIMER_3_BASE);
+ prcmu_timer_base =3D __io_address(U5500_PRCMU_TIMER_3_BASE)=
;
} else if (cpu_is_u8500()) {
#ifdef CONFIG_LOCAL_TIMERS
twd_base =3D __io_address(U8500_TWD_BASE);
#endif
mtu_base =3D __io_address(U8500_MTU0_BASE);
- clksrc_dbx500_timer_base =3D
__io_address(U8500_PRCMU_TIMER_4_BASE);
+ prcmu_timer_base =3D __io_address(U8500_PRCMU_TIMER_4_BASE)=
;
} else {
ux500_unknown_soc();
}
@@ -50,7 +53,7 @@ static void __init ux500_timer_init(void)
*/
nmdk_timer_init();
- clksrc_dbx500_prcmu_init();
+ clksrc_dbx500_prcmu_init(prcmu_timer_base);
}
static void ux500_timer_reset(void)
diff --git a/drivers/clocksource/clksrc-dbx500-prcmu.c
b/drivers/clocksource/clksrc-dbx500-prcmu.c
index 0ac5093..59feefe 100644
--- a/drivers/clocksource/clksrc-dbx500-prcmu.c
+++ b/drivers/clocksource/clksrc-dbx500-prcmu.c
@@ -31,7 +31,7 @@
#define SCHED_CLOCK_MIN_WRAP 131072 /* 2^32 / 32768 */
-void __iomem *clksrc_dbx500_timer_base;
+static void __iomem *clksrc_dbx500_timer_base;
static cycle_t clksrc_dbx500_prcmu_read(struct clocksource *cs)
{
@@ -79,8 +79,10 @@ static void notrace
clksrc_dbx500_prcmu_update_sched_clock(void)
}
#endif
-void __init clksrc_dbx500_prcmu_init(void)
+void __init clksrc_dbx500_prcmu_init(void __iomem *base)
{
+ clksrc_dbx500_timer_base =3D base;
+
/*
* The A9 sub system expects the timer to be configured as
* a continous looping timer.
diff --git a/include/linux/clksrc-dbx500-prcmu.h
b/include/linux/clksrc-dbx500-prcmu.h
index d1e9504..4fb8119 100644
--- a/include/linux/clksrc-dbx500-prcmu.h
+++ b/include/linux/clksrc-dbx500-prcmu.h
@@ -11,12 +11,10 @@
#include <linux/init.h>
#include <linux/io.h>
-extern void __iomem *clksrc_dbx500_timer_base;
-
#ifdef CONFIG_CLKSRC_DBX500_PRCMU
-void __init clksrc_dbx500_prcmu_init(void);
+void __init clksrc_dbx500_prcmu_init(void __iomem *base);
#else
-void __init clksrc_dbx500_prcmu_init(void) {}
+static inline void __init clksrc_dbx500_prcmu_init(void __iomem *base) {}
#endif
#endif
--=20
1.7.3.2
I will send a new pull request separately.
Thanks!
Linus Walleij
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