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From 7dd0a7c62e5885bb726ef2bd5007e79a50932c38 Mon Sep 17 00:00:00 2001
From: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
Date: Mon, 18 Mar 2019 14:06:36 -0700
Subject: [PATCH] Suppress excessive HID gadget error logs
HID events can be sent even when the host disconnects the HID
device according to the current graphic mode. For an example, if
KVM mouse events are sent when the host is in text mode, queueing
of end point messages will be dropped with this message:
configfs-gadget gadget: usb_ep_queue error on int endpoint -108
This case is very usual case in BMC since BMC can control power
status of the host, so this commit suppress the error printing outs
with making HID gadget driver drop events quietly in the case.
This should be a downstream only customization. Do not upstream it.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
---
drivers/usb/gadget/function/f_hid.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c
index f3816a5c861e..3a94584a9dbc 100644
--- a/drivers/usb/gadget/function/f_hid.c
+++ b/drivers/usb/gadget/function/f_hid.c
@@ -395,8 +395,10 @@ static ssize_t f_hidg_write(struct file *file, const char __user *buffer,
status = usb_ep_queue(hidg->in_ep, req, GFP_ATOMIC);
if (status < 0) {
- ERROR(hidg->func.config->cdev,
- "usb_ep_queue error on int endpoint %zd\n", status);
+ if (status != -ESHUTDOWN)
+ ERROR(hidg->func.config->cdev,
+ "usb_ep_queue error on int endpoint %zd\n",
+ status);
goto release_write_pending;
} else {
status = count;
--
2.7.4
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