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Giovanni Cabiddu ca605f97da crypto: qat - power up 4xxx device 
After reset or boot, QAT 4xxx devices are inactive and require to be
explicitly activated.
This is done by writing the DRV_ACTIVE bit in the PM_INTERRUPT register
and polling the PM_INIT_STATE to make sure that the transaction has
completed properly.

If this is not done, the driver will fail the initialization sequence
reporting the following message:
    [   22.081193] 4xxx 0000:f7:00.0: enabling device (0140 -> 0142)
    [   22.720285] QAT: AE0 is inactive!!
    [   22.720287] QAT: failed to get device out of reset
    [   22.720288] 4xxx 0000:f7:00.0: qat_hal_clr_reset error
    [   22.720290] 4xxx 0000:f7:00.0: Failed to init the AEs
    [   22.720290] 4xxx 0000:f7:00.0: Failed to initialise Acceleration Engine
    [   22.720789] 4xxx 0000:f7:00.0: Resetting device qat_dev0
    [   22.825099] 4xxx: probe of 0000:f7:00.0 failed with error -14

The patch also temporarily disables the power management source of
interrupt, to avoid possible spurious interrupts as the power management
feature is not fully supported.

The device init function has been added to adf_dev_init(), and not in the
probe of 4xxx to make sure that the device is re-enabled in case of
reset.

Note that the error code reported by hw_data->init_device() in
adf_dev_init() has been shadowed for consistency with the other calls
in the same function.

Fixes: 8c8268166e ("crypto: qat - add qat_4xxx driver")
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Wojciech Ziemba <wojciech.ziemba@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2021-09-24 16:03:04 +08:00
arch crypto: aesni - check walk.nbytes instead of err 2021-09-17 11:06:15 +08:00
block block-5.15-2021-09-11 2021-09-11 10:19:51 -07:00
certs certs: Add support for using elliptic curve keys for signing modules 2021-08-23 19:55:42 +03:00
crypto crypto: drbg - Fix unused value warning in drbg_healthcheck_sanity() 2021-09-17 11:06:15 +08:00
Documentation An assortment of improvements for auxdisplay: 2021-09-12 16:00:49 -07:00
drivers crypto: qat - power up 4xxx device 2021-09-24 16:03:04 +08:00
fs Merge branch 'misc.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-09-12 10:43:51 -07:00
include Compiler Attributes improvements: 2021-09-12 16:09:26 -07:00
init More tracing updates for 5.15: 2021-09-09 13:11:15 -07:00
ipc ARM development updates for 5.15: 2021-09-09 13:25:49 -07:00
kernel - Make sure the idle timer expires in hardirq context, on PREEMPT_RT 2021-09-12 11:37:41 -07:00
lib crypto: sm4 - Do not change section of ck and sbox 2021-09-17 11:05:10 +08:00
LICENSES LICENSES/dual/CC-BY-4.0: Git rid of "smart quotes" 2021-07-15 06:31:24 -06:00
mm ARM development updates for 5.15: 2021-09-09 13:25:49 -07:00
net virtio,vdpa,vhost: features, fixes 2021-09-11 14:48:42 -07:00
samples kgdb patches for 5.15 2021-09-07 12:08:04 -07:00
scripts RISC-V Patches for the 5.15 Merge Window, Part 2 2021-09-11 14:29:42 -07:00
security Kbuild updates for v5.15 2021-09-03 15:33:47 -07:00
sound sound fixes for 5.15-rc1 2021-09-09 16:05:10 -07:00
tools perf tools changes for v5.15: 2nd batch 2021-09-12 16:18:15 -07:00
usr .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
virt KVM: Drop unused kvm_dirty_gfn_invalid() 2021-09-06 08:23:46 -04:00
.clang-format clang-format: Update with the latest for_each macro list 2021-05-12 23:32:39 +02:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap mailmap: update email address of Matthias Fuchs and Thomas Körper 2021-08-19 09:39:44 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: move Murali Karicheri to credits 2021-04-29 15:47:30 -07:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Compiler Attributes improvements: 2021-09-12 16:09:26 -07:00
Makefile Linux 5.15-rc1 2021-09-12 16:28:37 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

README 

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.