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Message-Id: <20180521210447.696180574@linuxfoundation.org>
Date: Mon, 21 May 2018 23:10:52 +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,
"Shuah Khan (Samsung OSG)" <shuah@...nel.org>
Subject: [PATCH 4.14 02/95] usbip: usbip_host: delete device from busid_table after rebind
4.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Shuah Khan (Samsung OSG) <shuah@...nel.org>
commit 1e180f167d4e413afccbbb4a421b48b2de832549 upstream.
Device is left in the busid_table after unbind and rebind. Rebind
initiates usb bus scan and the original driver claims the device.
After rescan the device should be deleted from the busid_table as
it no longer belongs to usbip_host.
Fix it to delete the device after device_attach() succeeds.
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@...nel.org>
Cc: stable <stable@...r.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/usb/usbip/stub_main.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/drivers/usb/usbip/stub_main.c
+++ b/drivers/usb/usbip/stub_main.c
@@ -200,6 +200,9 @@ static ssize_t rebind_store(struct devic
if (!bid)
return -ENODEV;
+ /* mark the device for deletion so probe ignores it during rescan */
+ bid->status = STUB_BUSID_OTHER;
+
/* device_attach() callers should hold parent lock for USB */
if (bid->udev->dev.parent)
device_lock(bid->udev->dev.parent);
@@ -211,6 +214,9 @@ static ssize_t rebind_store(struct devic
return ret;
}
+ /* delete device from busid_table */
+ del_match_busid((char *) buf);
+
return count;
}
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