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Hans de Goede 3e759425cc ACPI: scan: Fix _STA getting called on devices with unmet dependencies 
Commit 71da201f38 ("ACPI: scan: Defer enumeration of devices with
_DEP lists") dropped the following 2 lines from acpi_init_device_object():

	/* Assume there are unmet deps until acpi_device_dep_initialize() runs */
	device->dep_unmet = 1;

Leaving the initial value of dep_unmet at the 0 from the kzalloc(). This
causes the acpi_bus_get_status() call in acpi_add_single_object() to
actually call _STA, even though there maybe unmet deps, leading to errors
like these:

[    0.123579] ACPI Error: No handler for Region [ECRM] (00000000ba9edc4c)
               [GenericSerialBus] (20170831/evregion-166)
[    0.123601] ACPI Error: Region GenericSerialBus (ID=9) has no handler
               (20170831/exfldio-299)
[    0.123618] ACPI Error: Method parse/execution failed
               \_SB.I2C1.BAT1._STA, AE_NOT_EXIST (20170831/psparse-550)

Fix this by re-adding the dep_unmet = 1 initialization to
acpi_init_device_object() and modifying acpi_bus_check_add() to make sure
that dep_unmet always gets setup there, overriding the initial 1 value.

This re-fixes the issue initially fixed by
commit 63347db0af ("ACPI / scan: Use acpi_bus_get_status() to initialize
ACPI_TYPE_DEVICE devs"), which introduced the removed
"device->dep_unmet = 1;" statement.

This issue was noticed; and the fix tested on a Dell Venue 10 Pro 5055.

Fixes: 71da201f38 ("ACPI: scan: Defer enumeration of devices with _DEP lists")
Suggested-by: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Cc: 5.11+ <stable@vger.kernel.org> # 5.11+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
History 2021-03-30 21:36:20 +02:00
arch Two fixes: 2021-03-28 12:19:16 -07:00
block block: don't create too many partitions 2021-03-27 09:22:18 -06:00
certs certs: Replace K{U,G}IDT_INIT() with GLOBAL_ROOT_{U,G}ID 2021-01-21 16:16:10 +00:00
crypto crypto: mips/poly1305 - enable for all MIPS processors 2021-03-08 11:52:17 +01:00
Documentation arm64 fixes for -rc5 2021-03-25 11:07:40 -07:00
drivers ACPI: scan: Fix _STA getting called on devices with unmet dependencies 2021-03-30 21:36:20 +02:00
fs 5 cifs/smb3 fixes, 2 for stable, includes an important fix for encryption and an ACL fix, as well as a fix for possible reflink data corruption 2021-03-28 12:06:21 -07:00
include Fix the non-debug mutex_lock_io_nested() method to map to mutex_lock_io() instead of mutex_lock(). 2021-03-28 12:12:22 -07:00
init Merge branch 'akpm' (patches from Andrew) 2021-03-14 12:23:34 -07:00
ipc fs: make helpers idmap mount aware 2021-01-24 14:27:20 +01:00
kernel io_uring-5.12-2021-03-27 2021-03-28 11:42:05 -07:00
lib Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-03-24 18:16:04 -07:00
LICENSES LICENSES: Add the CC-BY-4.0 license 2020-12-08 10:33:27 -07:00
mm Merge branch 'akpm' (patches from Andrew) 2021-03-25 11:43:43 -07:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-03-24 18:16:04 -07:00
samples Merge git://git.kernel.org:/pub/scm/linux/kernel/git/netdev/net 2021-03-09 17:15:56 -08:00
scripts kbuild: fix ld-version.sh to not be affected by locale 2021-03-13 11:12:13 +09:00
security integrity-v5.12-fix 2021-03-25 16:46:43 -07:00
sound sound fixes for 5.12-rc4 2021-03-19 09:53:32 -07:00
tools Some more perf tools fixes for v5.12: 2021-03-28 13:22:54 -07:00
usr Kbuild updates for v5.12 2021-02-25 10:17:31 -08:00
virt KVM: x86/mmu: Consider the hva in mmu_notifier retry 2021-02-22 13:16:53 -05:00
.clang-format cxl for 5.12 2021-02-24 09:38:36 -08:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.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 clang-lto series for v5.12-rc1 2021-02-23 09:28:51 -08:00
.mailmap Merge branch 'akpm' (patches from Andrew) 2021-03-25 11:43:43 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS treewide: Miguel has moved 2021-02-26 09:41:03 -08:00
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 ARM: SoC fixes for v5.12 2021-03-26 11:19:38 -07:00
Makefile Linux 5.12-rc5 2021-03-28 15:48:16 -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.