Shengjiu Wang 34bfbae33a ARM: 8475/1: SWP emulation: Restore original *data when failed ...

__user_swpX_asm maybe failed in first STREX operation, emulate_swpX
will try again, but the *data has been changed in first time. which
causes the result is wrong.
This patch is to fix this issue. When STREX succeed, change the *data.
if it fail, *data is not changed.

Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

2015-12-15 11:51:42 +00:00

7.0 KiB

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