diff options
| author | Shuah Khan (Samsung OSG) <shuah@kernel.org> | 2018-05-01 01:17:19 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-25 11:54:53 +0300 |
| commit | 55c99909476209cd08379cc4b42ffcd050174ab9 (patch) | |
| tree | 92bfc4657b9ee0fb83612d230c9fd2bb26984a11 | |
| parent | 72f8ba7681d3ff1bee167dbb386ce81fbb20999a (diff) | |
| download | linux-55c99909476209cd08379cc4b42ffcd050174ab9.tar.xz | |
usbip: usbip_host: delete device from busid_table after rebind
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@kernel.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/usbip/stub_main.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/usb/usbip/stub_main.c b/drivers/usb/usbip/stub_main.c index f761e02e75c9..c289f0593bb8 100644 --- a/drivers/usb/usbip/stub_main.c +++ b/drivers/usb/usbip/stub_main.c @@ -201,6 +201,9 @@ 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); @@ -212,6 +215,9 @@ 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; } |