linux-kernel - [net-next v1] net: wwan: t7xx: reset device if suspend fails

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Message-Id: <20241021121634.16278-1-jinjian.song@fibocom.com>
Date: Mon, 21 Oct 2024 20:16:34 +0800
From: Jinjian Song <jinjian.song@...ocom.com>
To: chandrashekar.devegowda@...el.com,
	chiranjeevi.rapolu@...ux.intel.com,
	haijun.liu@...iatek.com,
	m.chetan.kumar@...ux.intel.com,
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	loic.poulain@...aro.org,
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Cc: linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org,
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	Jinjian Song <jinjian.song@...ocom.com>
Subject: [net-next v1] net: wwan: t7xx: reset device if suspend fails

If driver fails to set the device to suspend, it means that the
device is abnormal. In this case, reset the device to recover.

Signed-off-by: Jinjian Song <jinjian.song@...ocom.com>
---
 drivers/net/wwan/t7xx/t7xx_pci.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wwan/t7xx/t7xx_pci.c b/drivers/net/wwan/t7xx/t7xx_pci.c
index e556e5bd49ab..625f5679c3b0 100644
--- a/drivers/net/wwan/t7xx/t7xx_pci.c
+++ b/drivers/net/wwan/t7xx/t7xx_pci.c
@@ -427,6 +427,7 @@ 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);
+	t7xx_reset_device(t7xx_dev, PLDR);
 	return ret;
 }
 
-- 
2.34.1