[added,to,the,4.1,stable,tree] ARM: ux500: fix prcmu_is_cpu_in_wfi() calculation

Message ID 20180118205908.3220-295-alexander.levin@microsoft.com
State New
Headers show
Series
  • [added,to,the,4.1,stable,tree] ARM: ux500: fix prcmu_is_cpu_in_wfi() calculation
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Commit Message

Sasha Levin Jan. 18, 2018, 9:02 p.m.
From: Arnd Bergmann <arnd@arndb.de>


This patch has been added to the  stable tree. If you have any
objections, please let us know.

-- 
2.11.0

Patch

===============

[ Upstream commit f0e8faa7a5e894b0fc99d24be1b18685a92ea466 ]

This function clearly never worked and always returns true,
as pointed out by gcc-7:

arch/arm/mach-ux500/pm.c: In function 'prcmu_is_cpu_in_wfi':
arch/arm/mach-ux500/pm.c:137:212: error: ?:
using integer constants in boolean context, the expression
will always evaluate to 'true' [-Werror=int-in-bool-context]

With the added braces, the condition actually makes sense.

Fixes: 34fe6f107eab ("mfd : Check if the other db8500 core is in WFI")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 arch/arm/mach-ux500/pm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-ux500/pm.c b/arch/arm/mach-ux500/pm.c
index 2cb587b50905..7ae4f94db1e8 100644
--- a/arch/arm/mach-ux500/pm.c
+++ b/arch/arm/mach-ux500/pm.c
@@ -132,8 +132,8 @@  bool prcmu_pending_irq(void)
  */
 bool prcmu_is_cpu_in_wfi(int cpu)
 {
-	return readl(PRCM_ARM_WFI_STANDBY) & cpu ? PRCM_ARM_WFI_STANDBY_WFI1 :
-		     PRCM_ARM_WFI_STANDBY_WFI0;
+	return readl(PRCM_ARM_WFI_STANDBY) &
+		(cpu ? PRCM_ARM_WFI_STANDBY_WFI1 : PRCM_ARM_WFI_STANDBY_WFI0);
 }
 
 /*