Merge "msm: pcie: check link status before access" (b07f4966) · Commits · e / devices / android_kernel_sony_msm8994

arch/arm/mach-msm/pcie.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -282,6 +282,15 @@ static inline int msm_pcie_oper_conf(struct pci_bus *bus, u32 devfn, int oper,
		goto unlock;
		}

		if (dev->link_status != MSM_PCIE_LINK_ENABLED) {
		PCIE_DBG(
		"Access to RC%d %d:0x%02x + 0x%04x[%d] is denied because link is down\n",
		rc_idx, bus->number, devfn, where, size);
		*val = ~0;
		rv = PCIBIOS_DEVICE_NOT_FOUND;
		goto unlock;
		}

		/* check if the link is up for endpoint */
		if (!rc && !msm_pcie_is_link_up(dev)) {
		pr_err("RC%d %s fail, link down - bus %d devfn %d\n",