6cbb7aeded
The APIs scsi_host_block()/scsi_host_unblock() were recently added by commit2bb955840c("scsi: core: add scsi_host_(block,unblock) helper function") and so far the APIs are only used by: commit3d3ca53b16("scsi: aacraid: use scsi_host_(block,unblock) to block I/O"). However, from reading the code, I think the APIs don't really work for aacraid, because, in the resume path of hibernation, when aac_suspend() -> scsi_host_block() is called, scsi_device_quiesce() has set the state to SDEV_QUIESCE, so aac_suspend() -> scsi_host_block() returns -EINVAL. Fix the issue by allowing the state change. Link: https://lore.kernel.org/r/1587170445-50013-1-git-send-email-decui@microsoft.com Fixes:2bb955840c("scsi: core: add scsi_host_(block,unblock) helper function") Reviewed-by: Ewan D. Milne <emilne@redhat.com> Reviewed-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Dexuan Cui <decui@microsoft.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.