mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-05-09 12:33:18 -04:00
097143f23a
During a warm reset via kexec, the system bypasses the driver removal
sequence, meaning that the remove() callback is not invoked.
If a QAT device is not shutdown properly, the device driver will fail to
load in a newly rebooted kernel.
This might result in output like the following after the kexec reboot:
420xx 0000:01:00.0: Failed to power up the device
420xx 0000:01:00.0: Failed to initialize device
420xx 0000:01:00.0: Resetting device qat_dev0
420xx 0000:01:00.0: probe with driver 420xx failed with error -14
Implement the shutdown() handler that hooks into the reboot notifier
list. This brings down the QAT device and ensures it is shut down
properly.
Cc: <stable@vger.kernel.org>
Fixes: fcf60f4bcf ("crypto: qat - add support for 420xx devices")
Reviewed-by: Ahsan Atta <ahsan.atta@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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 reStructuredText 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.