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Mikko Perttunen authored
ahci_platform_get_resources handles resource management for platform AHCI drivers, including getting a possible PHY from the device tree. Since not all drivers need a PHY, it ignores -ENODEV and -ENOSYS from devm_get_phy. However, when the PHY subsystem is mistakenly disabled, -ENOSYS can be returned even when a PHY is needed. This patch modifies the -ENOSYS case to check if a "phys" device tree node exists. If it exists, then clearly the PHY subsystem is mistakenly disabled and the driver cannot work, ahci_platform_get_resources will fail and propagate the error. Signed-off-by:
Mikko Perttunen <mperttunen@nvidia.com> Acked-by:
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by:
Tejun Heo <tj@kernel.org>
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