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Arnd Bergmann bd51cf6997 mfd: arizona: Fix undefined behavior 
[ Upstream commit 5da6cbcd2f ]

When the driver is used with a subdevice that is disabled in the
kernel configuration, clang gets a little confused about the
control flow and fails to notice that n_subdevs is only
uninitialized when subdevs is NULL, and we check for that,
leading to a false-positive warning:

drivers/mfd/arizona-core.c:1423:19: error: variable 'n_subdevs' is uninitialized when used here
      [-Werror,-Wuninitialized]
                              subdevs, n_subdevs, NULL, 0, NULL);
                                       ^~~~~~~~~
drivers/mfd/arizona-core.c:999:15: note: initialize the variable 'n_subdevs' to silence this warning
        int n_subdevs, ret, i;
                     ^
                      = 0

Ideally, we would rearrange the code to avoid all those early
initializations and have an explicit exit in each disabled case,
but it's much easier to chicken out and add one more initialization
here to shut up the warning.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2019-07-31 07:28:53 +02:00
Documentation dt-bindings: allow up to four clocks for orion-mdio 2019-07-31 07:28:43 +02:00
arch powerpc/xmon: Fix disabling tracing while in xmon 2019-07-31 07:28:53 +02:00
block block, bfq: NULL out the bic when it's no longer valid 2019-07-21 09:04:30 +02:00
certs Replace magic for trusting the secondary keyring with #define 2018-09-09 19:55:54 +02:00
crypto crypto: chacha20poly1305 - fix atomic sleep when using async algorithm 2019-07-31 07:28:35 +02:00
drivers mfd: arizona: Fix undefined behavior 2019-07-31 07:28:53 +02:00
firmware License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fs nfsd: Fix overflow causing non-working mounts on 1 TB machines 2019-07-31 07:28:48 +02:00
include jbd2: introduce jbd2_inode dirty range scoping 2019-07-31 07:28:47 +02:00
init init: initialize jump labels before command line option parsing 2019-05-16 19:42:23 +02:00
ipc ipc: prevent lockup on alloc_msg and free_msg 2019-06-15 11:54:51 +02:00
kernel padata: use smp_mb in padata_reorder to avoid orphaned padata jobs 2019-07-31 07:28:39 +02:00
lib lib/strscpy: Shut up KASAN false-positives in strscpy() 2019-07-31 07:28:44 +02:00
mm mm: vmscan: scan anonymous pages on file refaults 2019-07-31 07:28:48 +02:00
net hvsock: fix epollout hang from race condition 2019-07-31 07:28:48 +02:00
samples samples, bpf: fix to change the buffer size for read() 2019-07-21 09:04:17 +02:00
scripts recordmcount: Fix spurious mcount entries on powerpc 2019-07-31 07:28:53 +02:00
security apparmor: enforce nullbyte at end of tag string 2019-06-25 11:36:51 +08:00
sound ALSA: hda/realtek: apply ALC891 headset fixup to one Dell machine 2019-07-31 07:28:38 +02:00
tools iio: iio-utils: Fix possible incorrect mask calculation 2019-07-31 07:28:53 +02:00
usr initramfs: fix initramfs rebuilds w/ compression after disabling 2017-11-03 07:39:19 -07:00
virt KVM: arm/arm64: vgic: Fix kvm_device leak in vgic_its_destroy 2019-07-21 09:04:24 +02:00
.cocciconfig
…
.get_maintainer.ignore
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.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore kbuild: rpm-pkg: keep spec file until make mrproper 2018-02-13 10:19:46 +01:00
.mailmap .mailmap: Add Maciej W. Rozycki's Imagination e-mail address 2017-11-10 12:16:15 -08:00
COPYING
…
CREDITS MAINTAINERS: update TPM driver infrastructure changes 2017-11-09 17:58:40 -08:00
Kbuild License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
MAINTAINERS MAINTAINERS: Add Sasha as a stable branch maintainer 2018-12-01 09:42:50 +01:00
Makefile kbuild: Add -Werror=unknown-warning-option to CLANG_FLAGS 2019-07-31 07:28:52 +02:00
README README: add a new README file, pointing to the Documentation/ 2016-10-24 08:12:35 -02:00

README 

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

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.