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Martin Blumenstingl 347052e3bf usb: dwc3: meson-g12a: fix USB2 PHY initialization on G12A and A1 SoCs 
dwc3_meson_g12a_usb2_init_phy() crashes with NULL pointer on an SM1
board (which uses the same USB setup as G12A) dereference as reported
by the Kernel CI bot. This is because of the following call flow:
  dwc3_meson_g12a_probe
    priv->drvdata->setup_regmaps
      dwc3_meson_g12a_setup_regmaps
        priv->usb2_ports is still 0 so priv->u2p_regmap[i] will be NULL
    dwc3_meson_g12a_get_phys
      initializes priv->usb2_ports
    priv->drvdata->usb_init
      dwc3_meson_g12a_usb_init
        dwc3_meson_g12a_usb_init_glue
          dwc3_meson_g12a_usb2_init
            priv->drvdata->usb2_init_phy
              dwc3_meson_g12a_usb2_init_phy
                dereferences priv->u2p_regmap[i]

Call priv->drvdata->setup_regmaps only after dwc3_meson_g12a_get_phys so
priv->usb2_ports is initialized and the regmaps will be set up
correctly. This fixes the NULL dereference later on.

Fixes: 013af227f5 ("usb: dwc3: meson-g12a: handle the phy and glue registers separately")
Reported-by: "kernelci.org bot" <bot@kernelci.org>
Acked-by: Felipe Balbi <balbi@kernel.org>
Acked-by: Neil Armstrong <narmstron@baylibre.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20200526202943.715220-3-martin.blumenstingl@googlemail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-05-29 12:21:26 +02:00
arch USB: changes for v5.8 merge window 2020-05-25 13:28:20 +02:00
block bdi: use bdi_dev_name() to get device name 2020-05-09 16:07:39 -06:00
certs .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
crypto gcc-10: avoid shadowing standard library 'free()' in crypto 2020-05-09 15:58:04 -07:00
Documentation Revert "dt-bindings: usb: qcom,dwc3: Convert USB DWC3 bindings" 2020-05-29 10:29:40 +02:00
drivers usb: dwc3: meson-g12a: fix USB2 PHY initialization on G12A and A1 SoCs 2020-05-29 12:21:26 +02:00
fs Merge branch 'exec-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2020-05-17 12:23:37 -07:00
include thunderbolt: Changes for v5.8 merge window 2020-05-26 12:19:36 +02:00
init A single fix for early boot crashes of kernels built with gcc10 and 2020-05-17 11:08:29 -07:00
ipc ipc/util.c: sysvipc_find_ipc() incorrectly updates position index 2020-05-14 10:00:35 -07:00
kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-15 13:10:06 -07:00
lib Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-15 13:10:06 -07:00
LICENSES LICENSES: Rename other to deprecated 2019-05-03 06:34:32 -06:00
mm kasan: add missing functions declarations to kasan.h 2020-05-14 10:00:35 -07:00
net NFS client bugfixes for Linux 5.7 2020-05-15 14:03:13 -07:00
samples Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-15 13:10:06 -07:00
scripts scripts/gdb: repair rb_first() and rb_last() 2020-05-07 19:27:20 -07:00
security selinux/stable-5.7 PR 20200430 2020-04-30 16:35:45 -07:00
sound sound fixes for 5.7-rc6 2020-05-15 10:06:49 -07:00
tools A new testcase for guest debugging (gdbstub) that exposed a bunch of 2020-05-16 13:39:22 -07:00
usr kbuild: fix comment about missing include guard detection 2020-04-11 12:09:48 +09:00
virt KVM: Introduce kvm_make_all_cpus_request_except() 2020-05-08 07:44:32 -04:00
.clang-format clang-format: Update with the latest for_each macro list 2020-04-18 13:49:33 +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: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
.mailmap mailmap: Add Sedat Dilek (replacement for expired email address) 2020-04-11 09:28:34 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Hand MIPS over to Thomas 2020-02-24 22:43:18 -08:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig docs: kbuild: convert docs to ReST and rename to *.rst 2019-06-14 14:21:21 -06:00
MAINTAINERS Merge 5.7-rc6 into usb-next 2020-05-18 07:55:55 +02:00
Makefile Linux 5.7-rc6 2020-05-17 16:48:37 -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.