WSL2-Linux-Kernel/drivers/soc
Anson Huang 715f5f92aa soc: imx: gpc: restrict register range for regmap access
[ Upstream commit de2d9b5284 ]

GPC registers are NOT continuous, some registers are
reserved and accessing them from userspace will trigger
external abort, add regmap register access table to
avoid below abort:

root@imx6slevk:~# cat /sys/kernel/debug/regmap/20dc000.gpc/registers
[  108.480477] Unhandled fault: imprecise external abort (0x1406) at 0xb6db5004
[  108.487985] pgd = 42b54bfd
[  108.490741] [b6db5004] *pgd=ba1b7831
[  108.494386] Internal error: : 1406 [#1] SMP ARM
[  108.498943] Modules linked in:
[  108.502043] CPU: 0 PID: 389 Comm: cat Not tainted 4.18.0-rc1-00074-gc9f1f60-dirty #482
[  108.509982] Hardware name: Freescale i.MX6 SoloLite (Device Tree)
[  108.516123] PC is at regmap_mmio_read32le+0x20/0x24
[  108.521031] LR is at regmap_mmio_read+0x40/0x60
[  108.525586] pc : [<c059cf74>]    lr : [<c059d1ac>]    psr: 20060093
[  108.531875] sp : eccf1d98  ip : eccf1da8  fp : eccf1da4
[  108.537122] r10: ec2d3800  r9 : eccf1f60  r8 : ecfc0000
[  108.542370] r7 : eccf1e2c  r6 : eccf1e2c  r5 : 00000028  r4 : ec338e00
[  108.548920] r3 : 00000000  r2 : eccf1e2c  r1 : f0980028  r0 : 00000000
[  108.555474] Flags: nzCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment none
[  108.562720] Control: 10c5387d  Table: acf4004a  DAC: 00000051
[  108.568491] Process cat (pid: 389, stack limit = 0xd4318a65)
[  108.574174] Stack: (0xeccf1d98 to 0xeccf2000)

Fixes: 721cabf6c6 ("soc: imx: move PGC handling to a new GPC driver")
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-24 13:09:19 +02:00
..
actions soc: actions: owl-sps: Factor out owl_sps_set_pg() for power-gating 2017-06-23 17:43:27 +02:00
amlogic meson-gx-socinfo: Fix package id parsing 2018-02-25 11:07:56 +01:00
atmel ARM: at91: add armv7m SoC detection 2017-06-02 10:11:49 +02:00
bcm soc: bcm: raspberrypi-power: Fix use of __packed 2018-06-21 04:02:42 +09:00
dove License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fsl soc/fsl/qbman: fix issue in qman_delete_cgr_safe() 2018-03-31 18:10:42 +02:00
imx soc: imx: gpc: restrict register range for regmap access 2018-08-24 13:09:19 +02:00
lantiq MIPS: lantiq: gphy: Drop reboot/remove reset asserts 2018-06-05 11:41:58 +02:00
mediatek soc: mediatek: fix the mistaken pointer accessed when subdomains are added 2018-04-24 09:36:28 +02:00
qcom soc: qcom: wcnss_ctrl: Fix increment in NV upload 2018-05-30 07:52:35 +02:00
renesas License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rockchip soc: rockchip: power-domain: Fix wrong value when power up pd with writemask 2018-07-03 11:24:51 +02:00
samsung Samsung soc drivers changes for v4.14 2017-08-23 21:46:12 +02:00
sunxi drivers: soc: sunxi: add support for A64 and its SRAM C 2017-08-18 14:30:21 +08:00
tegra License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ti License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ux500 ARM: ux500: move soc_id driver to drivers/soc 2016-07-12 11:24:09 +02:00
versatile soc: versatile: remove unnecessary static in realview_soc_probe() 2017-08-16 22:28:27 +02:00
zte soc: zte: Restrict SOC_ZTE to ARCH_ZX or COMPILE_TEST 2017-07-27 13:12:34 +02:00
Kconfig soc: Add Amlogic SoC Information driver 2017-07-28 09:25:07 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00