powerpc/opal_elog: Handle multiple writes to ack attribute

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Even though we use self removing sysfs helper, we still need
to make sure we do the final kobject delete conditionally.
sysfs_remove_file_self() will handle parallel calls to remove
the sysfs attribute file and returns true only in the caller
that removed the attribute file. The other parallel callers
are returned false. Do the final kobject delete checking
the return value of sysfs_remove_file_self().

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Reviewed-by: Mahesh Salgaonkar <mahesh@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201014064813.109515-1-aneesh.kumar@linux.ibm.com

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Aneesh Kumar K.V 2020-10-14 12:18:13 +05:30 • committed by Michael Ellerman

parent ffd0b25ca0

commit d4263b12a1

1 changed files with 8 additions and 3 deletions

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arch/powerpc/platforms/powernv/opal-elog.c

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