projects
/
firefly-linux-kernel-4.4.55.git
/ blobdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
shortlog
|
log
|
commit
|
commitdiff
|
tree
raw
| inline |
side by side
Check whether the SCU was already initialised
[firefly-linux-kernel-4.4.55.git]
/
arch
/
arm
/
kernel
/
smp_scu.c
diff --git
a/arch/arm/kernel/smp_scu.c
b/arch/arm/kernel/smp_scu.c
index d3831f616ee9f334bdfc0bf453512348597bea35..9ab4149bd9830883f88d2b1d20739c981a344551 100644
(file)
--- a/
arch/arm/kernel/smp_scu.c
+++ b/
arch/arm/kernel/smp_scu.c
@@
-37,6
+37,10
@@
void __init scu_enable(void __iomem *scu_base)
u32 scu_ctrl;
scu_ctrl = __raw_readl(scu_base + SCU_CTRL);
+ /* already enabled? */
+ if (scu_ctrl & 1)
+ return;
+
scu_ctrl |= 1;
__raw_writel(scu_ctrl, scu_base + SCU_CTRL);