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usb-host: fix host close 

The whole usb_host_close() function is skipped in case the device is not
in attached state.  This is wrong though, only then usb_device_detach()
must be skipped, all other cleanup (especially device reset and closing
the file handle) still needs to be done.  There are code paths where
usb_host_close() is called with the device in detached state already.

This fixes usb-host devices not being released and returned to the host
after removing them with device_del.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2011-10-28 16:13:50 +02:00
parent db80358a20
commit 39fba3ada9
1 changed files with 4 additions and 2 deletions
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6
usb-linux.c
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@ -1349,7 +1349,7 @@ static int usb_host_close(USBHostDevice *dev)
{
int i;
if (dev->fd == -1 || !dev->dev.attached) {
if (dev->fd == -1) {
return -1;
}
@ -1367,7 +1367,9 @@ static int usb_host_close(USBHostDevice *dev)
}
async_complete(dev);
dev->closing = 0;
usb_device_detach(&dev->dev);
if (dev->dev.attached) {
usb_device_detach(&dev->dev);
}
ioctl(dev->fd, USBDEVFS_RESET);
close(dev->fd);
dev->fd = -1;