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55f90a4d07
dpaa2_eth_connect_mac() is called both from dpaa2_eth_probe() and from dpni_irq0_handler_thread(). It could happen that the DPNI gets connected to a DPMAC on the fsl-mc bus exactly during probe, as soon as the "endpoint change" interrupt is requested in dpaa2_eth_setup_irqs(). This will cause the dpni_irq0_handler_thread() to register a phylink instance for that DPMAC. Then, the probing function will also try to register a phylink instance for the same DPMAC, operation which should fail (and this will fail the probing of the driver). Reorder dpaa2_eth_setup_irqs() and dpaa2_eth_connect_mac(), such that dpni_irq0_handler_thread() never races with the DPMAC-related portion of the probing path. Also reorder dpaa2_eth_disconnect_mac() to be in the mirror position of dpaa2_eth_connect_mac() in the teardown path. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com> Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
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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.