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| author | Thiébaud Weksteen <tweek@google.com> | 2019-08-06 13:00:50 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-08-08 16:07:34 +0200 |
| commit | 27709ae4e2fe6cf7da2ae45e718e190c5433342b (patch) | |
| tree | 4573510c07b599692a0040a3dd39e36bffb90d52 /drivers/usb/core/usb.h | |
| parent | c468a8aa790e0dfe0a7f8a39db282d39c2c00b46 (diff) | |
| download | linux-stable-27709ae4e2fe6cf7da2ae45e718e190c5433342b.tar.gz linux-stable-27709ae4e2fe6cf7da2ae45e718e190c5433342b.tar.bz2 linux-stable-27709ae4e2fe6cf7da2ae45e718e190c5433342b.zip | |
usb: setup authorized_default attributes using usb_bus_notify
Currently, the authorized_default and interface_authorized_default
attributes for HCD are set up after the uevent has been sent to userland.
This creates a race condition where userland may fail to access this
file when processing the event. Move the appending of these attributes
earlier relying on the usb_bus_notify dispatcher.
Signed-off-by: Thiébaud Weksteen <tweek@google.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20190806110050.38918-1-tweek@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/core/usb.h')
| -rw-r--r-- | drivers/usb/core/usb.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index bd8d01f85a13..0c9fde5ad052 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -153,6 +153,11 @@ static inline int is_usb_port(const struct device *dev) return dev->type == &usb_port_device_type; } +static inline int is_root_hub(struct usb_device *udev) +{ + return (udev->parent == NULL); +} + /* Do the same for device drivers and interface drivers. */ static inline int is_usb_device_driver(struct device_driver *drv) |