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| author |   Shawn Guo <shawn.guo@linaro.org> | 2014-07-16 07:40:53 +0100 |
|---|---|---|
| committer |   Russell King <rmk+kernel@arm.linux.org.uk> | 2014-07-18 12:29:37 +0100 |
| commit | ddd0c53018222df6bd9b2f61c881887b56b75d88 (patch) | |
| tree | 221228ca1285abeccee00b066000fa0942e056e7 /arch/arm/include/asm/pgtable.h | |
| parent | ARM: 8098/1: mcs lock: implement wfe-based polling for MCS locking (diff) | |
| download | linux-dev-ddd0c53018222df6bd9b2f61c881887b56b75d88.tar.xz linux-dev-ddd0c53018222df6bd9b2f61c881887b56b75d88.zip | |
ARM: 8103/1: save/restore Cortex-A9 CP15 registers on suspend/resume
The CP15 diagnostic register holds ARM errata bits on Cortex-A9, so it
needs to be saved/restored on suspend/resume. Otherwise, the
effectiveness of errata workaround gets lost together with diagnostic
register bit across suspend/resume cycle. And the CP15 power control
register of Cortex-A9 shares the same problem.
The patch adds a couple of Cortex-A9 specific suspend/resume functions
to save/restore these two Cortex-A9 CP15 registers across the
suspend/resume cycle.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/pgtable.h')
0 files changed, 0 insertions, 0 deletions