powerpc/powernv: Handle unknown OPAL errors in opal_nvram_write()

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commit 741de61766 upstream.

opal_nvram_write currently just assumes success if it encounters an
error other than OPAL_BUSY or OPAL_BUSY_EVENT. Have it return -EIO
on other errors instead.

Fixes: 628daa8d5a ("powerpc/powernv: Add RTC and NVRAM support plus RTAS fallbacks")
Cc: stable@vger.kernel.org # v3.2+
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Acked-by: Stewart Smith <stewart@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Nicholas Piggin 2018-03-27 01:02:33 +10:00 • committed by Greg Kroah-Hartman

parent 693b03f9b1

commit c3baeca67d

1 changed files with 4 additions and 0 deletions

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

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