irqchip: gic: Preserve gic V2 bypass bits in cpu ctrl register

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This change is made to preserve the GIC v2 bypass bits in the
GIC_CPU_CTRL register (also known as the GICC_CTLR register in spec).
This code will preserve all bits configured by the bootloader regarding
v2 bypass group bits. In the X-Gene platform, the bypass functionality
is not used and bypass bits should not be changed by the kernel gic
code as it could lead to incorrect behavior.

Signed-off-by: Feng Kan <fkan@apm.com>
Reviewed-by: Vinayak Kale <vkale@apm.com>
Reviewed-by: Anup Patel <apatel@apm.com>
Link: https://lkml.kernel.org/r/1406757419-18729-3-git-send-email-fkan@apm.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

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Feng Kan 2014-07-30 14:56:59 -07:00 • committed by Jason Cooper

parent e5f81539f6

commit 3228950621

2 changed files with 23 additions and 3 deletions

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25

drivers/irqchip/irq-gic.c

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1

include/linux/irqchip/arm-gic.h

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