Merge "cnss2: Retry if PCI link traning fails during power up" (23bd62b4) · Commits · e / devices / android_kernel_xiaomi_nabu

drivers/net/wireless/cnss2/debug.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -606,6 +606,9 @@ static int cnss_show_quirks_state(struct seq_file *s,
		case ENABLE_DAEMON_SUPPORT:
		seq_puts(s, "DAEMON_SUPPORT");
		continue;
		case IGNORE_PCI_LINK_FAILURE:
		seq_puts(s, "IGNORE_PCI_LINK_FAILURE");
		continue;
		}

		seq_printf(s, "UNKNOWN-%d", i);

drivers/net/wireless/cnss2/main.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -232,6 +232,7 @@ enum cnss_debug_quirks {
		ENABLE_PCI_LINK_DOWN_PANIC,
		FBC_BYPASS,
		ENABLE_DAEMON_SUPPORT,
		IGNORE_PCI_LINK_FAILURE,
		};

		enum cnss_bdf_type {

drivers/net/wireless/cnss2/pci.c

+20 −1

Original line number	Diff line number	Diff line
		@@ -138,6 +138,9 @@ static DEFINE_SPINLOCK(pci_reg_window_lock);

		#define QCA6390_WLAON_QFPROM_PWR_CTRL_REG 0x1F8031C

		#define POWER_ON_RETRY_MAX_TIMES 3
		#define POWER_ON_RETRY_DELAY_MS 200

		static struct cnss_pci_reg ce_src[] = {
		{ "SRC_RING_BASE_LSB", QCA6390_CE_SRC_RING_BASE_LSB_OFFSET },
		{ "SRC_RING_BASE_MSB", QCA6390_CE_SRC_RING_BASE_MSB_OFFSET },
		@@ -436,8 +439,10 @@ int cnss_resume_pci_link(struct cnss_pci_data *pci_priv)
		}

		ret = cnss_set_pci_link(pci_priv, PCI_LINK_UP);
		if (ret)
		if (ret) {
		ret = -EAGAIN;
		goto out;
		}

		pci_priv->pci_link_state = PCI_LINK_UP;

		@@ -932,6 +937,7 @@ static int cnss_qca6290_powerup(struct cnss_pci_data *pci_priv)
		int ret = 0;
		struct cnss_plat_data *plat_priv = pci_priv->plat_priv;
		unsigned int timeout;
		int retry = 0;

		if (plat_priv->ramdump_info_v2.dump_data_valid \|\|
		test_bit(CNSS_DRIVER_RECOVERY, &plat_priv->driver_state)) {
		@@ -939,6 +945,7 @@ static int cnss_qca6290_powerup(struct cnss_pci_data *pci_priv)
		cnss_pci_clear_dump_info(pci_priv);
		}

		retry:
		ret = cnss_power_on_device(plat_priv);
		if (ret) {
		cnss_pr_err("Failed to power on device, err = %d\n", ret);
		@@ -948,6 +955,18 @@ static int cnss_qca6290_powerup(struct cnss_pci_data *pci_priv)
		ret = cnss_resume_pci_link(pci_priv);
		if (ret) {
		cnss_pr_err("Failed to resume PCI link, err = %d\n", ret);
		if (test_bit(IGNORE_PCI_LINK_FAILURE,
		&plat_priv->ctrl_params.quirks)) {
		cnss_pr_dbg("Ignore PCI link resume failure\n");
		ret = 0;
		goto out;
		}
		if (ret == -EAGAIN && retry++ < POWER_ON_RETRY_MAX_TIMES) {
		cnss_power_off_device(plat_priv);
		cnss_pr_dbg("Retry to resume PCI link #%d\n", retry);
		msleep(POWER_ON_RETRY_DELAY_MS * retry);
		goto retry;
		}
		goto power_off;
		}