Thread (17 messages) 17 messages, 4 authors, 2012-11-28
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[PATCH 3/3] ARM: AM335x: Fix warning in timer.c

From: Santosh Shilimkar <hidden>
Date: 2012-11-28 06:28:57
Also in: linux-omap

On Wednesday 28 November 2012 07:45 AM, Jon Hunter wrote:
quoted hunk ↗ jump to hunk
When compiling the kernel with configuration options ...

  # CONFIG_ARCH_OMAP2 is not set
  # CONFIG_ARCH_OMAP3 is not set
  # CONFIG_ARCH_OMAP4 is not set
  # CONFIG_SOC_OMAP5 is not set
  CONFIG_SOC_AM33XX=y

  ... the following build warning is seen.

   CC      arch/arm/mach-omap2/timer.o
   arch/arm/mach-omap2/timer.c:395:19: warning: ?omap2_sync32k_clocksource_init?
   	defined but not used [-Wunused-function]

This issue was introduced by commit 6f80b3b (ARM: OMAP2+: timer: remove
CONFIG_OMAP_32K_TIMER) where the omap2_sync32k_clocksource_init() is no
longer referenced by the timer initialisation function for the AM335x
device as it has no 32k-sync timer.

Fix this by only including the omap2_sync32k_clocksource_init() function
if either OMAP2, OMAP3, OMAP4 or OMAP5 devices are enabled.

Cc: Igor Grinberg <redacted>

Signed-off-by: Jon Hunter <redacted>
---
  arch/arm/mach-omap2/timer.c |    3 +++
  1 file changed, 3 insertions(+)
diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index eb96712..085c7e7 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -386,6 +386,8 @@ static u32 notrace dmtimer_read_sched_clock(void)
  	return 0;
  }

+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+	defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
#ifndef CONFIG_SOC_AM33XX ?

#ifdef things are really ugly and needs constant patching and
hence something like CONFIG_HAS_32K kind of feature flags are
better. But that will undo certain part of f80b3b
(ARM: OMAP2+: timer: remove  CONFIG_OMAP_32K_TIMER).

Regards
santosh
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