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From: "Marek Behún" <kabel@kernel.org>
To: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Bjorn Helgaas <helgaas@kernel.org>
Cc: "Krzysztof Wilczyński" <kw@linux.com>,
	"Marc Zyngier" <maz@kernel.org>,
	pali@kernel.org, linux-pci@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	"Gregory CLEMENT" <gregory.clement@bootlin.com>,
	"Marek Behún" <kabel@kernel.org>
Subject: [PATCH 07/18] PCI: pciehp: Enable Command Completed Interrupt only if supported
Date: Sun, 20 Feb 2022 20:33:35 +0100	[thread overview]
Message-ID: <20220220193346.23789-8-kabel@kernel.org> (raw)
In-Reply-To: <20220220193346.23789-1-kabel@kernel.org>

From: Pali Rohár <pali@kernel.org>

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 <pali@kernel.org>
Signed-off-by: Marek Behún <kabel@kernel.org>
---
 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 373bb396fe22..838eb6cc3ec7 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 |
-- 
2.34.1


  parent reply	other threads:[~2022-02-20 19:34 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-20 19:33 [PATCH 00/18] PCI: aardvark controller changes BATCH 5 Marek Behún
2022-02-20 19:33 ` [PATCH 01/18] PCI: pci-bridge-emul: Re-arrange register tests Marek Behún
2022-02-20 19:33 ` [PATCH 02/18] PCI: pci-bridge-emul: Add support for PCIe extended capabilities Marek Behún
2022-02-20 19:33 ` [PATCH 03/18] PCI: aardvark: Add support for AER registers on emulated bridge Marek Behún
2022-02-20 19:33 ` [PATCH 04/18] PCI: Add PCI_EXP_SLTCAP_*_SHIFT macros Marek Behún
2022-04-28 11:09   ` Lorenzo Pieralisi
2022-04-28 11:16     ` Pali Rohár
2022-05-18 19:23   ` Bjorn Helgaas
2022-05-18 19:26     ` Pali Rohár
2022-05-18 20:05       ` Marek Behún
2022-05-18 20:27         ` Bjorn Helgaas
2022-02-20 19:33 ` [PATCH 05/18] PCI: aardvark: Fix reporting Slot capabilities on emulated bridge Marek Behún
2022-02-20 19:33 ` [PATCH 06/18] PCI: pciehp: Enable DLLSC interrupt only if supported Marek Behún
2022-05-09  3:42   ` Lukas Wunner
2022-05-13 16:57     ` Pali Rohár
2022-05-14  9:14       ` Lukas Wunner
2022-08-18 12:22         ` Marek Behún
2022-02-20 19:33 ` Marek Behún [this message]
2022-05-09  4:01   ` [PATCH 07/18] PCI: pciehp: Enable Command Completed Interrupt " Lukas Wunner
2022-05-13 16:59     ` Pali Rohár
2022-02-20 19:33 ` [PATCH 08/18] PCI: aardvark: Add support for DLLSC and hotplug interrupt Marek Behún
2022-02-20 19:33 ` [PATCH 09/18] PCI: Add PCI_EXP_SLTCTL_ASPL_DISABLE macro Marek Behún
2022-02-20 19:33 ` [PATCH 10/18] PCI: Add function for parsing `slot-power-limit-milliwatt` DT property Marek Behún
2022-02-20 19:33 ` [PATCH 11/18] dt-bindings: PCI: aardvark: Describe slot-power-limit-milliwatt Marek Behún
2022-02-20 19:33 ` [PATCH 12/18] PCI: aardvark: Send Set_Slot_Power_Limit message Marek Behún
2022-02-20 19:33 ` [PATCH 13/18] arm64: dts: armada-3720-turris-mox: Define slot-power-limit-milliwatt for PCIe Marek Behún
2022-02-20 19:33 ` [PATCH 14/18] PCI: aardvark: Add clock support Marek Behún
2022-02-20 19:33 ` [PATCH 15/18] arm64: dts: marvell: armada-37xx: Add clock to PCIe node Marek Behún
2022-02-28 15:52   ` Gregory CLEMENT
2022-02-20 19:33 ` [PATCH 16/18] PCI: aardvark: Add suspend to RAM support Marek Behún
2022-04-12 11:14   ` Lorenzo Pieralisi
2022-02-20 19:33 ` [PATCH 17/18] PCI: aardvark: Run link training in separate worker Marek Behún
2022-04-12 15:25   ` Lorenzo Pieralisi
2022-04-12 17:55     ` Pali Rohár
2022-04-13  9:16       ` Lorenzo Pieralisi
2022-05-04 14:02         ` Marek Behún
2022-02-20 19:33 ` [PATCH 18/18] PCI: aardvark: Optimize PCIe card reset via GPIO Marek Behún
2022-04-11 15:36 ` [PATCH 00/18] PCI: aardvark controller changes BATCH 5 Lorenzo Pieralisi
2022-04-11 16:53   ` Pali Rohár
2022-05-13 10:33 ` Lorenzo Pieralisi
2022-05-13 16:48   ` Pali Rohár
2022-05-18 15:54 ` (subset) " Lorenzo Pieralisi
2022-08-16 16:25 ` Lorenzo Pieralisi
2022-08-18 13:56   ` Marek Behún

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