xtensa: fix a6 and a7 handling in fast_syscall_xtensa

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commit d1b6ba82a5 upstream.

Remove restoring a6 on some return paths and instead modify and restore
it in a single place, using symbolic name.
Correctly restore a7 from PT_AREG7 in case of illegal a6 value.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Max Filippov 2014-07-31 22:40:57 +04:00 • committed by Greg Kroah-Hartman

parent 6bbfb4cad0

commit 7e5866d82d

1 changed files with 5 additions and 7 deletions

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arch/xtensa/kernel/entry.S

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