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Make sure to use the current alternate setting when verifying the
interface descriptors to avoid binding to an invalid interface.
Failing to do so could cause the driver to misbehave or trigger a WARN()
in usb_submit_urb() that kernels with panic_on_warn set would choke on.
Fixes: aec5fb2268b7 ("can: kvaser_usb: Add support for Kvaser USB hydra family")
Cc: stable <stable@vger.kernel.org> # 4.19
Cc: Jimmy Assarsson <extja@kvaser.com>
Cc: Christer Beskow <chbe@kvaser.com>
Cc: Nicklas Johansson <extnj@kvaser.com>
Cc: Martin Henriksson <mh@kvaser.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Uninitialized Kernel memory can leak to USB devices.
Fix this by using kzalloc() instead of kmalloc().
Signed-off-by: Xiaolong Huang <butterflyhuangxx@gmail.com>
Fixes: 7259124eac7d ("can: kvaser_usb: Split driver into kvaser_usb_core.c and kvaser_usb_leaf.c")
Cc: linux-stable <stable@vger.kernel.org> # >= v4.19
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
serial_number_high can be removed from the struct since it is never used in
the USBcan II firmware.
Signed-off-by: Jimmy Assarsson <jimmyassarsson@gmail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This patch adds support for a new Kvaser USB family, denoted hydra.
The hydra family currently contains USB devices with one CAN channel
up to five. There are devices with and without CAN FD support.
Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Signed-off-by: Christer Beskow <chbe@kvaser.com>
Signed-off-by: Nicklas Johansson <extnj@kvaser.com>
Signed-off-by: Martin Henriksson <mh@kvaser.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
First part of adding support for Kvaser USB device family "hydra".
Split kvaser_usb.c into kvaser_usb/kvaser_usb{.h,_core.c,_leaf.c}.
kvaser_usb_core.c contains common functionality, such as USB
writing/reading and allocation of netdev.
kvaser_usb_leaf.c contains device specific code, used in
kvaser_usb_core.c.
struct kvaser_usb_dev_ops contains device specific functions that are
common for all devices in the family. While, struct kvaser_usb_dev_cfg
describes the device configurations in terms of CAN clock frequency,
timestamp frequency and CAN controller bittiming constants.
Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
