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Message-Id: <e245729770ca221377aabb7db4daba4c41dabdb9.1523488629.git.shuahkh@osg.samsung.com> Date: Wed, 11 Apr 2018 18:13:31 -0600 From: Shuah Khan <shuahkh@....samsung.com> To: valentina.manea.m@...il.com, shuah@...nel.org, gregkh@...uxfoundation.org Cc: Shuah Khan <shuahkh@....samsung.com>, linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH 2/3] usbip: usbip_host: delete device from busid_table after rebind 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 <shuahkh@....samsung.com> --- drivers/usb/usbip/stub_main.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/usb/usbip/stub_main.c b/drivers/usb/usbip/stub_main.c index d41d0cdeec0f..fb46bd62d538 100644 --- a/drivers/usb/usbip/stub_main.c +++ b/drivers/usb/usbip/stub_main.c @@ -186,6 +186,9 @@ static ssize_t rebind_store(struct device_driver *dev, const char *buf, 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); @@ -197,6 +200,9 @@ static ssize_t rebind_store(struct device_driver *dev, const char *buf, return ret; } + /* delete device from busid_table */ + del_match_busid((char *) buf); + return count; } -- 2.14.1
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