From 37248c705254f050fb67b107eb389a378ab0428e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Pali=20Roh=C3=A1r?= Date: Wed, 31 Mar 2021 15:14:29 +0200 Subject: [PATCH 44/53] PCI: pciehp: Enable Command Completed Interrupt only if supported MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The No Command Completed Support bit in the Slot Capabilities register indicates whether Command Completed Interrupt Enable is unsupported. Enable this interrupt only in the case it is supported. Signed-off-by: Pali Rohár Signed-off-by: Marek Behún --- drivers/pci/hotplug/pciehp_hpc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c index ef807c79b1b1..a5199b312e74 100644 --- a/drivers/pci/hotplug/pciehp_hpc.c +++ b/drivers/pci/hotplug/pciehp_hpc.c @@ -817,7 +817,9 @@ static void pcie_enable_notification(struct controller *ctrl) else cmd |= PCI_EXP_SLTCTL_PDCE; if (!pciehp_poll_mode) - cmd |= PCI_EXP_SLTCTL_HPIE | PCI_EXP_SLTCTL_CCIE; + cmd |= PCI_EXP_SLTCTL_HPIE; + if (!pciehp_poll_mode && !NO_CMD_CMPL(ctrl)) + cmd |= PCI_EXP_SLTCTL_CCIE; mask = (PCI_EXP_SLTCTL_PDCE | PCI_EXP_SLTCTL_ABPE | PCI_EXP_SLTCTL_PFDE | -- 2.37.3