Linux-USB Archive on lore.kernel.org
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From: Johan Hovold <johan@kernel.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
	Johan Hovold <johan@kernel.org>, stable <stable@vger.kernel.org>,
	syzbot+a4fbb3bb76cda0ea4e58@syzkaller.appspotmail.com
Subject: [PATCH] USB: ldusb: fix control-message timeout
Date: Tue, 22 Oct 2019 17:31:27 +0200
Message-ID: <20191022153127.22295-1-johan@kernel.org> (raw)
In-Reply-To: <000000000000daa63d059580f872@google.com>

USB control-message timeouts are specified in milliseconds, not jiffies.
Waiting 83 minutes for a transfer to complete is a bit excessive.

Fixes: 2824bd250f0b ("[PATCH] USB: add ldusb driver")
Cc: stable <stable@vger.kernel.org>     # 2.6.13
Reported-by: syzbot+a4fbb3bb76cda0ea4e58@syzkaller.appspotmail.com
Signed-off-by: Johan Hovold <johan@kernel.org>
---
 drivers/usb/misc/ldusb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/misc/ldusb.c b/drivers/usb/misc/ldusb.c
index dd1ea25e42b1..8f86b4ebca89 100644
--- a/drivers/usb/misc/ldusb.c
+++ b/drivers/usb/misc/ldusb.c
@@ -581,7 +581,7 @@ static ssize_t ld_usb_write(struct file *file, const char __user *buffer,
 					 1 << 8, 0,
 					 dev->interrupt_out_buffer,
 					 bytes_to_write,
-					 USB_CTRL_SET_TIMEOUT * HZ);
+					 USB_CTRL_SET_TIMEOUT);
 		if (retval < 0)
 			dev_err(&dev->intf->dev,
 				"Couldn't submit HID_REQ_SET_REPORT %d\n",
-- 
2.23.0


      reply index

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-22 14:54 INFO: task hung in ld_usb_write syzbot
2019-10-22 15:31 ` Johan Hovold [this message]

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