28 lines
922 B
Diff
28 lines
922 B
Diff
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From 1671ef2de0f3f698622bed7ba0e9a605fdd260fc Mon Sep 17 00:00:00 2001
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From: Bhushan Shah <bshah@kde.org>
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Date: Wed, 14 Apr 2021 18:58:41 +0530
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Subject: [PATCH 6/6] cdc-wdm: send HUP if we are resetting
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If userspace is polling the cdc-wdm socket, and device resets then we
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should notify userspace/client about reset.
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---
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drivers/usb/class/cdc-wdm.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
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index 2b9355ed4a2ad..93d9bacc18384 100644
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--- a/drivers/usb/class/cdc-wdm.c
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+++ b/drivers/usb/class/cdc-wdm.c
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@@ -666,6 +666,8 @@ static __poll_t wdm_poll(struct file *file, struct poll_table_struct *wait)
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spin_unlock_irqrestore(&desc->iuspin, flags);
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goto desc_out;
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}
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+ if (test_bit(WDM_RESETTING, &desc->flags))
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+ mask = EPOLLHUP;
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if (test_bit(WDM_READ, &desc->flags))
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mask = EPOLLIN | EPOLLRDNORM;
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if (desc->rerr || desc->werr)
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--
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2.31.1
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