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H A D | opal.c | a9336ddf Sun May 20 21:04:38 CDT 2018 Deb McLemore <debmc@linux.vnet.ibm.com> powerpc/powernv: Add queue mechanism for early messages
When issuing a BMC soft poweroff during IPL, the poweroff can be lost so the machine would not poweroff.
This is because opal messages can be received before the opal-power code registered its notifiers.
Fix it by buffering messages. If we receive a message and do not yet have a handler for that type, store the message and replay when a handler for that type is registered.
Signed-off-by: Deb McLemore <debmc@linux.vnet.ibm.com> [mpe: Single unlock path in opal_message_notifier_register(), tweak comments/formatting and change log.] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1526868278-4204-1-git-send-email-debmc@linux.vnet.ibm.com a9336ddf Sun May 20 21:04:38 CDT 2018 Deb McLemore <debmc@linux.vnet.ibm.com> powerpc/powernv: Add queue mechanism for early messages When issuing a BMC soft poweroff during IPL, the poweroff can be lost so the machine would not poweroff. This is because opal messages can be received before the opal-power code registered its notifiers. Fix it by buffering messages. If we receive a message and do not yet have a handler for that type, store the message and replay when a handler for that type is registered. Signed-off-by: Deb McLemore <debmc@linux.vnet.ibm.com> [mpe: Single unlock path in opal_message_notifier_register(), tweak comments/formatting and change log.] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1526868278-4204-1-git-send-email-debmc@linux.vnet.ibm.com
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