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d489f18ad1
The SCSI error handler calls scsi_unjam_host() which can call the queue function ufshcd_queuecommand() indirectly. The error handler changes the state to UFSHCD_STATE_RESET while running, but error interrupts that happen while the error handler is running could change the state to UFSHCD_STATE_EH_SCHEDULED_NON_FATAL which would allow requests to go through ufshcd_queuecommand() even though the error handler is running. Block that hole by checking whether the error handler is in progress. Link: https://lore.kernel.org/r/20211008084048.257498-1-adrian.hunter@intel.com Reviewed-by: Asutosh Das <asutoshd@codeaurora.org> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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.