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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 03:22:58 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 03:22:58 +0000 |
| commit | e5e4452190fd42838db4b11912bd8cd03fa61e08 (patch) | |
| tree | 374214b3170254d7666dd99241b14417b54983c2 /drivers/usb/core/sysfs.c | |
| parent | Releasing progress-linux version 6.1.82-1progress7u1. (diff) | |
| download | linux-e5e4452190fd42838db4b11912bd8cd03fa61e08.tar.xz linux-e5e4452190fd42838db4b11912bd8cd03fa61e08.zip | |
Merging upstream version 6.1.85.
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 ccf6cd972..5f1e07341 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -1170,14 +1170,24 @@ 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; } |