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powerpc/eeh: Remove eeh_mutex

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Originally, eeh_mutex was introduced to protect the PE hierarchy
tree and the attached EEH devices because EEH core was possiblly
running with multiple threads to access the PE hierarchy tree.
However, we now have only one kthread in EEH core. So we needn't
the eeh_mutex and just remove it.

Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Gavin Shan
2013-06-25 14:35:27 +08:00
committed by Benjamin Herrenschmidt
parent ff1e768341
commit ef6a285773
3 changed files with 1 additions and 46 deletions
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3
arch/powerpc/kernel/eeh.c
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@@ -103,9 +103,6 @@ EXPORT_SYMBOL(eeh_subsystem_enabled);
*/
int eeh_probe_mode;
/* Global EEH mutex */
DEFINE_MUTEX(eeh_mutex);
/* Lock to avoid races due to multiple reports of an error */
DEFINE_RAW_SPINLOCK(confirm_error_lock);