kernel/linux.git/drivers/soc/imx, branch v5.2.16

soc: imx8: Fix potential kernel dump in error path

2019-08-06T17:08:05+00:00

[ Upstream commit 1bcbe7300815e91fef18ee905b04f65490ad38c9 ] When SoC's revision value is 0, SoC driver will print out "unknown" in sysfs's revision node, this "unknown" is a static string which can NOT be freed, this will caused below kernel dump in later error path which calls kfree: kernel BUG at mm/slub.c:3942! Internal error: Oops - BUG: 0 [#1] PREEMPT SMP Modules linked in: CPU: 2 PID: 1 Comm: swapper/0 Not tainted 5.2.0-rc4-next-20190611-00023-g705146c-dirty #2197 Hardware name: NXP i.MX8MQ EVK (DT) pstate: 60000005 (nZCv daif -PAN -UAO) pc : kfree+0x170/0x1b0 lr : imx8_soc_init+0xc0/0xe4 sp : ffff00001003bd10 x29: ffff00001003bd10 x28: ffff00001121e0a0 x27: ffff000011482000 x26: ffff00001117068c x25: ffff00001121e100 x24: ffff000011482000 x23: ffff000010fe2b58 x22: ffff0000111b9ab0 x21: ffff8000bd9dfba0 x20: ffff0000111b9b70 x19: ffff7e000043f880 x18: 0000000000001000 x17: ffff000010d05fa0 x16: ffff0000122e0000 x15: 0140000000000000 x14: 0000000030360000 x13: ffff8000b94b5bb0 x12: 0000000000000038 x11: ffffffffffffffff x10: ffffffffffffffff x9 : 0000000000000003 x8 : ffff8000b9488147 x7 : ffff00001003bc00 x6 : 0000000000000000 x5 : 0000000000000003 x4 : 0000000000000003 x3 : 0000000000000003 x2 : b8793acd604edf00 x1 : ffff7e000043f880 x0 : ffff7e000043f888 Call trace: kfree+0x170/0x1b0 imx8_soc_init+0xc0/0xe4 do_one_initcall+0x58/0x1b8 kernel_init_freeable+0x1cc/0x288 kernel_init+0x10/0x100 ret_from_fork+0x10/0x18 This patch fixes this potential kernel dump when a chip's revision is "unknown", it is done by checking whether the revision space can be freed. Fixes: a7e26f356ca1 ("soc: imx: Add generic i.MX8 SoC driver") Signed-off-by: Anson Huang Signed-off-by: Shawn Guo Signed-off-by: Sasha Levin

soc: imx: soc-imx8: Correct return value of error handle

2019-08-06T17:08:03+00:00

[ Upstream commit 4c396a604a57da8f883a8b3368d83181680d6907 ] Current implementation of i.MX8 SoC driver returns -ENODEV for all cases of error during initialization, this is incorrect. This patch fixes them using correct return value according to different errors. Signed-off-by: Anson Huang Reviewed-by: Leonard Crestez Signed-off-by: Shawn Guo Signed-off-by: Sasha Levin

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46+00:00

Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman

Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2019-05-16T16:19:14+00:00

Pull ARM SoC-related driver updates from Olof Johansson: "Various driver updates for platforms and a couple of the small driver subsystems we merge through our tree: Among the larger pieces: - Power management improvements for TI am335x and am437x (RTC suspend/wake) - Misc new additions for Amlogic (socinfo updates) - ZynqMP FPGA manager - Nvidia improvements for reset/powergate handling - PMIC wrapper for Mediatek MT8516 - Misc fixes/improvements for ARM SCMI, TEE, NXP i.MX SCU drivers" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (57 commits) soc: aspeed: fix Kconfig soc: add aspeed folder and misc drivers spi: zynqmp: Fix build break soc: imx: Add generic i.MX8 SoC driver MAINTAINERS: Update email for Qualcomm SoC maintainer memory: tegra: Fix a typos for "fdcdwr2" mc client Revert "ARM: tegra: Restore memory arbitration on resume from LP1 on Tegra30+" memory: tegra: Replace readl-writel with mc_readl-mc_writel memory: tegra: Fix integer overflow on tick value calculation memory: tegra: Fix missed registers values latching ARM: tegra: cpuidle: Handle tick broadcasting within cpuidle core on Tegra20/30 optee: allow to work without static shared memory soc/tegra: pmc: Move powergate initialisation to probe soc/tegra: pmc: Remove reset sysfs entries on error soc/tegra: pmc: Fix reset sources and levels soc: amlogic: meson-gx-pwrc-vpu: Add support for G12A soc: amlogic: meson-gx-pwrc-vpu: Fix power on/off register bitmask fpga manager: Adding FPGA Manager support for Xilinx zynqmp dt-bindings: fpga: Add bindings for ZynqMP fpga driver firmware: xilinx: Add fpga API's ...

soc: imx: gpc: Use GENPD_FLAG_RPM_ALWAYS_ON for ERR009619

2019-05-13T08:51:31+00:00

This allows PU domain to be turned off in suspend and save power. Signed-off-by: Leonard Crestez Reviewed-by: Ulf Hansson Signed-off-by: Rafael J. Wysocki

soc: imx: Add generic i.MX8 SoC driver

2019-04-20T13:26:36+00:00

Add generic i.MX8 SoC driver along with the i.MX8MQ SoC specific code. For now, only i.MX8MQ revision B1 is supported. For any other, i.MX8MQ revision it will print 'unknown'. Signed-off-by: Abel Vesa Reviewed-by: Leonard Crestez Signed-off-by: Shawn Guo

soc: imx: gpcv2: use devm_platform_ioremap_resource() to simplify code

2019-04-11T07:16:44+00:00

Use the new helper devm_platform_ioremap_resource() which wraps the platform_get_resource() and devm_ioremap_resource() together, to simplify the code. Signed-off-by: Anson Huang Reviewed-by: Mukesh Ojha Signed-off-by: Shawn Guo

soc: imx: gpc: use devm_platform_ioremap_resource() to simplify code

2019-04-11T07:16:39+00:00

soc: imx: gpcv2: Make use of regmap_read_poll_timeout()

2019-03-19T08:47:09+00:00

Replace explicit polling loop with a call to regmap_read_poll_timeout() to avoid code repetition. Also fix misspelled "failed" while at it. Signed-off-by: Andrey Smirnov Cc: Lucas Stach Cc: Chris Healy Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Lucas Stach Signed-off-by: Shawn Guo

soc: imx: Break dependency on SOC_IMX8MQ for GPCv2

2019-01-14T01:42:22+00:00

Since this is going to be used on more SoCs than just i.MX8MQ, make the dependency here more generic by using ARCH_MXC instead. Also remove the SOC_IMX7D since it is also included by the ARCH_MXC. Signed-off-by: Abel Vesa Reviewed-by: Dong Aisheng Signed-off-by: Shawn Guo