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Until commit409c188c57("can: tree-wide: advertise software timestamping capabilities") the ethtool_ops was only assigned for devices which support the GS_CAN_FEATURE_IDENTIFY feature. That commit assigns ethtool_ops unconditionally. This results on controllers without GS_CAN_FEATURE_IDENTIFY support for the following ethtool error: | $ ethtool -p can0 1 | Cannot identify NIC: Broken pipe Restore the correct error value by checking for GS_CAN_FEATURE_IDENTIFY in the gs_usb_set_phys_id() function. | $ ethtool -p can0 1 | Cannot identify NIC: Operation not supported While there use the variable "netdev" for the "struct net_device" pointer and "dev" for the "struct gs_can" pointer as in the rest of the driver. Fixes:409c188c57("can: tree-wide: advertise software timestamping capabilities") Link: http://lore.kernel.org/all/20220818143853.2671854-1-mkl@pengutronix.de Cc: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.