35 lines
1.1 KiB
Diff
35 lines
1.1 KiB
Diff
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From ed73c96e313c549f710df58c8fbe47200ee13df1 Mon Sep 17 00:00:00 2001
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From: Bhushan Shah <bshah@kde.org>
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Date: Sat, 10 Apr 2021 08:52:05 +0530
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Subject: [PATCH 5/5] net: usb: qmi_wwan: set the DTR when resuming
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If usb device does reset_resume instead of unbind/bind, we need to
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re-enable the DTR quirk, that way after resuming connection QMI
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communication between host and modem is possible again.
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Signed-off-by: Bhushan Shah <bshah@kde.org>
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Tested-by: Dalton Durst <d@ltondur.st>
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---
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drivers/net/usb/qmi_wwan.c | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
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index cd6ae9696b56a..ada94a3242146 100644
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--- a/drivers/net/usb/qmi_wwan.c
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+++ b/drivers/net/usb/qmi_wwan.c
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@@ -855,6 +855,11 @@ static int qmi_wwan_reset_resume(struct usb_interface *intf)
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ret = usbnet_resume(intf);
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if (ret < 0 && callsub)
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info->subdriver->suspend(intf, PMSG_SUSPEND);
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+
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+ if (dev->driver_info->data & QMI_WWAN_QUIRK_DTR ||
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+ le16_to_cpu(dev->udev->descriptor.bcdUSB) >= 0x0201) {
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+ qmi_wwan_change_dtr(dev, true);
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+ }
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err:
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return ret;
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}
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--
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2.31.1
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