PCI: pciehp: Acknowledge spurious "cmd completed" event (476a357f) · Commits · e / devices / android_kernel_xiaomi_markw

In case of a spurious "cmd completed", pcie_write_cmd() does not clear it, but yet expects more "cmd completed" events to be generated. This does not happen because the previous (spurious) event has not been acknowledged. Fix that. Signed-off-by:

Rajat Jain <rajatxjain@gmail.com> Signed-off-by:

Rajat Jain <rajatjain@juniper.net> Signed-off-by:

Guenter Roeck <groeck@juniper.net> Signed-off-by:

Bjorn Helgaas <bhelgaas@google.com>

drivers/pci/hotplug/pciehp_hpc.c

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -159,6 +159,8 @@ static void pcie_write_cmd(struct controller *ctrl, u16 cmd, u16 mask)

	pcie_capability_read_word(pdev, PCI_EXP_SLTSTA, &slot_status);		pcie_capability_read_word(pdev, PCI_EXP_SLTSTA, &slot_status);
	if (slot_status & PCI_EXP_SLTSTA_CC) {		if (slot_status & PCI_EXP_SLTSTA_CC) {
			pcie_capability_write_word(pdev, PCI_EXP_SLTSTA,
			PCI_EXP_SLTSTA_CC);
	if (!ctrl->no_cmd_complete) {		if (!ctrl->no_cmd_complete) {
	/*		/*
	* After 1 sec and CMD_COMPLETED still not set, just		* After 1 sec and CMD_COMPLETED still not set, just