From: Gavin Shan Date: Fri, 12 Feb 2016 05:03:05 +0000 (+1100) Subject: powerpc/eeh: Fix partial hotplug criterion X-Git-Tag: MMI-PSA29.97-13-9~8412^2~4 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f6bf0fa14cf848ae770e0b7842c9b11ce2f01645;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git powerpc/eeh: Fix partial hotplug criterion During error recovery, the device could be removed as part of the partial hotplug. The criterion used to come with partial hotplug is: if the device driver provides error_detected(), slot_reset() and resume() callbacks, it's immune from hotplug. Otherwise, it's going to experience partial hotplug during EEH recovery. But the criterion isn't correct enough: mlx4_core driver for Mellanox adapters provides error_detected(), slot_reset() callbacks, but resume() isn't there. Those Mellanox adapters won't be to involved in the partial hotplug. This fixes the criterion to a practical one: adpater with driver that provides error_detected(), slot_reset() will be immune from partial hotplug. resume() isn't mandatory. Fixes: f2da4ccf ("powerpc/eeh: More relaxed hotplug criterion") Cc: stable@vger.kernel.org #v4.4+ Signed-off-by: Gavin Shan Signed-off-by: Michael Ellerman --- diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c index f69ecaa7ce33..52c1e273f8cd 100644 --- a/arch/powerpc/kernel/eeh_driver.c +++ b/arch/powerpc/kernel/eeh_driver.c @@ -418,8 +418,7 @@ static void *eeh_rmv_device(void *data, void *userdata) eeh_pcid_put(dev); if (driver->err_handler && driver->err_handler->error_detected && - driver->err_handler->slot_reset && - driver->err_handler->resume) + driver->err_handler->slot_reset) return NULL; }