37528b3ee9
[ Upstream commit b10178ee7fa88b68a9e8adc06534d2605cb0ec23 ] If somehow no interrupt notification is raised for a completed request and its doorbell bit is cleared by host, UFS driver needs to cleanup its outstanding bit in ufshcd_abort(). Otherwise, system may behave abnormally in the following scenario: After ufshcd_abort() returns, this request will be requeued by SCSI layer with its outstanding bit set. Any future completed request will trigger ufshcd_transfer_req_compl() to handle all "completed outstanding bits". At this time the "abnormal outstanding bit" will be detected and the "requeued request" will be chosen to execute request post-processing flow. This is wrong because this request is still "alive". Link: https://lore.kernel.org/r/20200811141859.27399-2-huobean@gmail.com Reviewed-by: Can Guo <cang@codeaurora.org> Acked-by: Avri Altman <avri.altman@wdc.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Bean Huo <beanhuo@micron.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> 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.