Merge "cnss2: Add CNSS wrapper function for msm_pcie_reg_dump()" (3008930d) · Commits · e / devices / android_kernel_fairphone_FP5

drivers/net/wireless/cnss2/pci.c

+34 −5

Original line number	Diff line number	Diff line
		@@ -553,6 +553,23 @@ static int cnss_pci_set_link_down(struct cnss_pci_data *pci_priv)

		return ret;
		}

		/**
		* _cnss_pci_get_reg_dump() - Dump PCIe RC registers for debug
		* @pci_priv: driver PCI bus context pointer
		* @buf: destination buffer pointer
		* @len: length of the buffer
		*
		* This function shall call corresponding PCIe root complex driver API
		* to dump PCIe RC registers for debug purpose.
		*
		* Return: 0 for success, negative value for error
		*/
		static int _cnss_pci_get_reg_dump(struct cnss_pci_data *pci_priv,
		u8 *buf, u32 len)
		{
		return msm_pcie_reg_dump(pci_priv->pci_dev, buf, len);
		}
		#else
		static int cnss_pci_enumerate(struct cnss_plat_data *plat_priv, int rc_num)
		{
		@@ -597,6 +614,12 @@ static int cnss_pci_set_link_down(struct cnss_pci_data *pci_priv)
		{
		return 0;
		}

		static int _cnss_pci_get_reg_dump(struct cnss_pci_data *pci_priv,
		u8 *buf, u32 len)
		{
		return 0;
		}
		#endif /* CONFIG_PCI_MSM */

		int cnss_pci_check_link_status(struct cnss_pci_data *pci_priv)
		@@ -1261,15 +1284,21 @@ EXPORT_SYMBOL(cnss_pci_link_down);
		int cnss_pci_get_reg_dump(struct device dev, uint8_t buffer, uint32_t len)
		{
		struct pci_dev *pci_dev = to_pci_dev(dev);
		struct cnss_pci_data *pci_priv = cnss_get_pci_priv(pci_dev);

		if (!pci_dev) {
		cnss_pr_err("pci_dev is NULL\n");
		return -EINVAL;
		if (!pci_priv) {
		cnss_pr_err("pci_priv is NULL\n");
		return -ENODEV;
		}

		if (pci_priv->pci_link_state == PCI_LINK_DOWN) {
		cnss_pr_dbg("No PCIe reg dump since PCIe device is suspended(D3)\n");
		return -EACCES;
		}

		cnss_pr_dbg("Get pci reg dump for hang data\n");
		cnss_pr_dbg("Start to get PCIe reg dump\n");

		return msm_pcie_reg_dump(pci_dev, buffer, len);
		return _cnss_pci_get_reg_dump(pci_priv, buffer, len);
		}
		EXPORT_SYMBOL(cnss_pci_get_reg_dump);