linux-kernel - [PATCH 5.4 70/74] usb: dwc2: Fix HPRT0.PrtSusp bit setting for HiKey 960 board.

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Message-Id: <20210405085027.016824786@linuxfoundation.org>
Date:   Mon,  5 Apr 2021 10:54:34 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Artur Petrosyan <Arthur.Petrosyan@...opsys.com>,
        Minas Harutyunyan <Minas.Harutyunyan@...opsys.com>
Subject: [PATCH 5.4 70/74] usb: dwc2: Fix HPRT0.PrtSusp bit setting for HiKey 960 board.

From: Artur Petrosyan <Arthur.Petrosyan@...opsys.com>

commit 5e3bbae8ee3d677a0aa2919dc62b5c60ea01ba61 upstream.

Increased the waiting timeout for HPRT0.PrtSusp register field
to be set, because on HiKey 960 board HPRT0.PrtSusp wasn't
generated with the existing timeout.

Cc: <stable@...r.kernel.org> # 4.18
Fixes: 22bb5cfdf13a ("usb: dwc2: Fix host exit from hibernation flow.")
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@...opsys.com>
Acked-by: Minas Harutyunyan <Minas.Harutyunyan@...opsys.com>
Link: https://lore.kernel.org/r/20210326102447.8F7FEA005D@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/usb/dwc2/hcd.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@@ -5398,7 +5398,7 @@ int dwc2_host_enter_hibernation(struct d
 	dwc2_writel(hsotg, hprt0, HPRT0);
 
 	/* Wait for the HPRT0.PrtSusp register field to be set */
-	if (dwc2_hsotg_wait_bit_set(hsotg, HPRT0, HPRT0_SUSP, 3000))
+	if (dwc2_hsotg_wait_bit_set(hsotg, HPRT0, HPRT0_SUSP, 5000))
 		dev_warn(hsotg->dev, "Suspend wasn't generated\n");
 
 	/*