[tip:timers/urgent] clocksource/fsl: Avoid harmless 64-bit warnings

From: tip-bot for Arnd Bergmann
Date: Tue Nov 17 2015 - 05:37:24 EST

Commit-ID: dde7632ed02382e4bac2b57c66ee2285764f2cd7
Gitweb: http://git.kernel.org/tip/dde7632ed02382e4bac2b57c66ee2285764f2cd7
Author: Arnd Bergmann <arnd@xxxxxxxx>
AuthorDate: Mon, 16 Nov 2015 17:34:50 +0100
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Mon, 16 Nov 2015 19:07:08 +0100

clocksource/fsl: Avoid harmless 64-bit warnings

The ftm_clockevent_init passes the value of "~0UL" into a function
that takes a 32-bit argument, which drops the upper 32 bits, as
gcc warns about on ARM64:

clocksource/fsl_ftm_timer.c: In function 'ftm_clockevent_init':
clocksource/fsl_ftm_timer.c:206:13: warning: large integer implicitly truncated to unsigned type [-Woverflow]

This was obviously unintended behavior, and is easily avoided by
using '~0u' as the integer literal, because that is 32-bit wide
on all architectures.

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: Xiubo Li <Li.Xiubo@xxxxxxxxxxxxx>
Cc: Shawn Guo <shawnguo@xxxxxxxxxx>
Cc: Sascha Hauer <kernel@xxxxxxxxxxxxxx>
Cc: Stefan Agner <stefan@xxxxxxxx>
Cc: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Link: 3990834.xnjhm37Grs@wuerfel">http://lkml.kernel.org/r/3990834.xnjhm37Grs@wuerfel
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>

drivers/clocksource/fsl_ftm_timer.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/clocksource/fsl_ftm_timer.c b/drivers/clocksource/fsl_ftm_timer.c
index 10202f1..517e1c7 100644
--- a/drivers/clocksource/fsl_ftm_timer.c
+++ b/drivers/clocksource/fsl_ftm_timer.c
@@ -203,7 +203,7 @@ static int __init ftm_clockevent_init(unsigned long freq, int irq)
int err;

ftm_writel(0x00, priv->clkevt_base + FTM_CNTIN);
- ftm_writel(~0UL, priv->clkevt_base + FTM_MOD);
+ ftm_writel(~0u, priv->clkevt_base + FTM_MOD);


@@ -230,7 +230,7 @@ static int __init ftm_clocksource_init(unsigned long freq)
int err;

ftm_writel(0x00, priv->clksrc_base + FTM_CNTIN);
- ftm_writel(~0UL, priv->clksrc_base + FTM_MOD);
+ ftm_writel(~0u, priv->clksrc_base + FTM_MOD);


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