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authorGavin Shan <gwshan@linux.vnet.ibm.com>2017-01-11 01:50:07 +0100
committerMichael Ellerman <mpe@ellerman.id.au>2017-02-15 10:02:43 +0100
commitd0c424971f70501ec0a0364117b9934db039c9cc (patch)
treed3e5425a4bd4d692b73756da07a37d3da305a786 /arch/powerpc/include
parentdrivers/pci/hotplug: Handle presence detection change properly (diff)
downloadlinux-d0c424971f70501ec0a0364117b9934db039c9cc.tar.xz
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drivers/pci/hotplug: Fix initial state for empty slot
In PowerNV PCI hotplug driver, the initial PCI slot's state is set to PNV_PHP_STATE_POPULATED if no PCI devices are connected to the slot. The PCI devices that are hot added to the slot won't be probed and populated because of the check in pnv_php_enable(): /* Check if the slot has been configured */ if (php_slot->state != PNV_PHP_STATE_REGISTERED) return 0; This fixes the issue by leaving the slot in PNV_PHP_STATE_REGISTERED state initially if nothing is connected to the slot. Fixes: 360aebd85a4 ("drivers/pci/hotplug: Support surprise hotplug in powernv driver") Cc: stable@vger.kernel.org #v4.9+ Reported-by: Hank Chang <hankmax0000@gmail.com> Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Tested-by: Willie Liauw <williel@supermicro.com.tw> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include')
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