This is a note to let you know that I've just added the patch titled

USB: legousbtower: fix open after failed reset request

to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From 0b074f6986751361ff442bc1127c1648567aa8d6 Mon Sep 17 00:00:00 2001

From: Johan Hovold johan@kernel.org Date: Thu, 19 Sep 2019 10:30:39 +0200 Subject: USB: legousbtower: fix open after failed reset request

The driver would return with a nonzero open count in case the reset control request failed. This would prevent any further attempts to open the char dev until the device was disconnected.

Fix this by incrementing the open count only on successful open.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Johan Hovold johan@kernel.org Cc: stable stable@vger.kernel.org Link: https://lore.kernel.org/r/20190919083039.30898-5-johan@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/misc/legousbtower.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c index 4fa999882635..44d6a3381804 100644 --- a/drivers/usb/misc/legousbtower.c +++ b/drivers/usb/misc/legousbtower.c @@ -348,7 +348,6 @@ static int tower_open (struct inode *inode, struct file *file) retval = -EBUSY; goto unlock_exit; } - dev->open_count = 1;

/* reset the tower */ result = usb_control_msg (dev->udev, @@ -388,13 +387,14 @@ static int tower_open (struct inode *inode, struct file *file) dev_err(&dev->udev->dev, "Couldn't submit interrupt_in_urb %d\n", retval); dev->interrupt_in_running = 0; - dev->open_count = 0; goto unlock_exit; }

/* save device in the file's private structure */ file->private_data = dev;

+ dev->open_count = 1; + unlock_exit: mutex_unlock(&dev->lock);