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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-08 17:45:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-08 17:45:30 +0000 |
| commit | 01db417e0aee3e51df4f5f3775535fd1fb15e329 (patch) | |
| tree | 12d419efb27541c39ef63831e0d899339ecfef4f /drivers/usb/core/sysfs.c | |
| parent | Adding debian version 5.10.209-2. (diff) | |
| download | linux-01db417e0aee3e51df4f5f3775535fd1fb15e329.tar.xz linux-01db417e0aee3e51df4f5f3775535fd1fb15e329.zip | |
Merging upstream version 5.10.216.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/usb/core/sysfs.c')
| -rw-r--r-- | drivers/usb/core/sysfs.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index 35ce8b87e..366c09521 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -1166,14 +1166,24 @@ static ssize_t interface_authorized_store(struct device *dev, { struct usb_interface *intf = to_usb_interface(dev); bool val; + struct kernfs_node *kn; if (strtobool(buf, &val) != 0) return -EINVAL; - if (val) + if (val) { usb_authorize_interface(intf); - else - usb_deauthorize_interface(intf); + } else { + /* + * Prevent deadlock if another process is concurrently + * trying to unregister intf. + */ + kn = sysfs_break_active_protection(&dev->kobj, &attr->attr); + if (kn) { + usb_deauthorize_interface(intf); + sysfs_unbreak_active_protection(kn); + } + } return count; } |