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Avri Altman 9ec5128a8b scsi: ufs: ufshpb: Properly handle max-single-cmd
The spec recommends that for transfer length larger than the max-single-cmd
attribute (bMAX_DATA_SIZE_FOR_HPB_SINGLE_CMD) it is possible to couple
pre-requests with the HPB-READ command.  Being a recommendation, using
pre-requests can be perceived merely as a means of optimization.  A common
practice was to send pre-requests for chunks within some interval, and
leave the READ10 untouched if larger.

Now that the pre-request flows have been removed, all the commands are
single commands.  Properly handle this attribute and do not send HPB-READ
for transfer lengths larger than max-single-cmd.

[mkp: resolve conflict]

Fixes: 09d9e4d041 ("scsi: ufs: ufshpb: Remove HPB2.0 flows")
Link: https://lore.kernel.org/r/20211031123654.17719-1-avri.altman@wdc.com
Reviewed-by: Daejun Park <daejun7.park@samsung.com>
Signed-off-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
History 2021-11-03 21:51:56 -04:00
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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.