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commit e445375882883f69018aa669b67cbb37ec873406 upstream. Like other SATA controller chips in the Marvell 88SE91xx series, the Marvell 88SE9125 has the same DMA requester ID hardware bug that prevents it from working under IOMMU. Add it to the list of devices that need the quirk. Without this patch, device initialization fails with DMA errors: ata8: softreset failed (1st FIS failed) DMAR: DRHD: handling fault status reg 2 DMAR: [DMA Write NO_PASID] Request device [03:00.1] fault addr 0xfffc0000 [fault reason 0x02] Present bit in context entry is clear DMAR: DRHD: handling fault status reg 2 DMAR: [DMA Read NO_PASID] Request device [03:00.1] fault addr 0xfffc0000 [fault reason 0x02] Present bit in context entry is clear After applying the patch, the controller can be successfully initialized: ata8: SATA link up 1.5 Gbps (SStatus 113 SControl 330) ata8.00: ATAPI: PIONEER BD-RW BDR-207M, 1.21, max UDMA/100 ata8.00: configured for UDMA/100 scsi 7:0:0:0: CD-ROM PIONEER BD-RW BDR-207M 1.21 PQ: 0 ANSI: 5 Link: https://lore.kernel.org/r/YahpKVR+McJVDdkD@work Reported-by: Sam Bingner <sam@bingner.com> Tested-by: Sam Bingner <sam@bingner.com> Tested-by: Yifeng Li <tomli@tomli.me> Signed-off-by: Yifeng Li <tomli@tomli.me> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Krzysztof Wilczyński <kw@linux.com> Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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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.