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930a3ed5d8
commit 8454563e4c2aafbfb81a383ab423ea8b9b430a25 upstream. To detect for the DMA_NONE (no data transfer) DMA direction, sas_ata_qc_issue() tests if the command protocol is ATA_PROT_NODATA. This test does not include the ATA_CMD_NCQ_NON_DATA command as this command protocol is defined as ATA_PROT_NCQ_NODATA (equal to ATA_PROT_FLAG_NCQ) and not as ATA_PROT_NODATA. To include both NCQ and non-NCQ commands when testing for the DMA_NONE DMA direction, use "!ata_is_data()". Link: https://lore.kernel.org/r/20220220031810.738362-2-damien.lemoal@opensource.wdc.com Fixes: 176ddd89171d ("scsi: libsas: Reset num_scatter if libata marks qc as NODATA") Cc: stable@vger.kernel.org Reviewed-by: John Garry <john.garry@huawei.com> Reviewed-by: Jack Wang <jinpu.wang@ionos.com> Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> 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.