diff mbox series

[net-next,v2] net: wwan: t7xx: reset device if suspend fails

Message ID 20241022084348.4571-1-jinjian.song@fibocom.com (mailing list archive)
State New
Headers show
Series [net-next,v2] net: wwan: t7xx: reset device if suspend fails | expand

Commit Message

Jinjian Song Oct. 22, 2024, 8:43 a.m. UTC 
If driver fails to set the device to suspend, it means that the
device is abnormal. In this case, reset the device to recover
when PCIe device is offline.

Signed-off-by: Jinjian Song <jinjian.song@fibocom.com>
---
V2:
 * Add judgment, reset when device is offline 
---
 drivers/net/wwan/t7xx/t7xx_pci.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/wwan/t7xx/t7xx_pci.c b/drivers/net/wwan/t7xx/t7xx_pci.c
index e556e5bd49ab..4f89a353588b 100644
--- a/drivers/net/wwan/t7xx/t7xx_pci.c
+++ b/drivers/net/wwan/t7xx/t7xx_pci.c
@@ -427,6 +427,10 @@  static int __t7xx_pci_pm_suspend(struct pci_dev *pdev)
 	iowrite32(T7XX_L1_BIT(0), IREG_BASE(t7xx_dev) + ENABLE_ASPM_LOWPWR);
 	atomic_set(&t7xx_dev->md_pm_state, MTK_PM_RESUMED);
 	t7xx_pcie_mac_set_int(t7xx_dev, SAP_RGU_INT);
+	if (pci_channel_offline(pdev)) {
+		dev_err(&pdev->dev, "Device offline, reset to recover\n");
+		t7xx_reset_device(t7xx_dev, PLDR);
+	}
 	return ret;
 }