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[ Upstream commite6471a65fd] The function mv_platform_probe() neglects to check the results of the calls to platform_get_irq() and irq_of_parse_and_map() and blithely passes them to ata_host_activate() -- while the latter only checks for IRQ0 (treating it as a polling mode indicattion) and passes the negative values to devm_request_irq() causing it to fail as it takes unsigned values for the IRQ #... Add to mv_platform_probe() the proper IRQ checks to pass the positive IRQ #s to ata_host_activate(), propagate upstream the negative error codes, and override the IRQ0 with -EINVAL (as we don't want the polling mode). Fixes:f351b2d638("sata_mv: Support SoC controllers") Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru> Link: https://lore.kernel.org/r/51436f00-27a1-e20b-c21b-0e817e0a7c86@omprussia.ru Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Sasha Levin <sashal@kernel.org>
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.