kernel/linux.git/arch/mips/ralink, branch v6.1.174

of/fdt: run soc memory setup when early_init_dt_scan_memory fails

2023-01-12T11:02:51+00:00

commit 2a12187d5853d9fd5102278cecef7dac7c8ce7ea upstream. If memory has been found early_init_dt_scan_memory now returns 1. If it hasn't found any memory it will return 0, allowing other memory setup mechanisms to carry on. Previously early_init_dt_scan_memory always returned 0 without distinguishing between any kind of memory setup being done or not. Any code path after the early_init_dt_scan memory call in the ramips plat_mem_setup code wouldn't be executed anymore. Making early_init_dt_scan_memory the only way to initialize the memory. Some boards, including my mt7621 based Cudy X6 board, depend on memory initialization being done via the soc_info.mem_detect function pointer. Those wouldn't be able to obtain memory and panic the kernel during early bootup with the message "early_init_dt_alloc_memory_arch: Failed to allocate 12416 bytes align=0x40". Fixes: 1f012283e936 ("of/fdt: Rework early_init_dt_scan_memory() to call directly") Cc: stable@vger.kernel.org Signed-off-by: Andreas Rammhold Link: https://lore.kernel.org/r/20221223112748.2935235-1-andreas@rammhold.de Signed-off-by: Rob Herring Signed-off-by: Greg Kroah-Hartman

MIPS: ralink: mt7621: avoid to init common ralink reset controller

2022-12-31T12:33:08+00:00

[ Upstream commit 76ce51798cb16738a4a28a6662e7344aaf7ef769 ] Commit 38a8553b0a22 ("clk: ralink: make system controller node a reset provider") make system controller a reset provider for mt7621 ralink SoCs. Ralink init code also tries to start previous common reset controller which at the end tries to find device tree node 'ralink,rt2880-reset'. mt7621 device tree file is not using at all this node anymore. Hence avoid to init this common reset controller for mt7621 ralink SoCs to avoid 'Failed to find reset controller node' boot error trace error. Fixes: 64b2d6ffff86 ("staging: mt7621-dts: align resets with binding documentation") Signed-off-by: Sergio Paracuellos Signed-off-by: Thomas Bogendoerfer Signed-off-by: Sasha Levin

mips: ralink: mt7621: do not use kzalloc too early

2022-12-21T16:48:03+00:00

commit 7c18b64bba3bcad1be94b404f47b94a04b91ce79 upstream. With CONFIG_SLUB=y, following commit 6edf2576a6cc ("mm/slub: enable debugging memory wasting of kmalloc") mt7621 failed to boot very early, without showing any console messages. This exposed the pre-existing bug of mt7621.c using kzalloc before normal memory management was available. Prior to this slub change, there existed the unintended protection against "kmem_cache *s" being NULL as slab_pre_alloc_hook() happened to return NULL and bailed out of slab_alloc_node(). This allowed mt7621 prom_soc_init to fail in the soc_dev_init kzalloc, but continue booting without the SOC_BUS driver device registered. Console output from a DEBUG_ZBOOT vmlinuz kernel loading, with mm/slub modified to warn on kmem_cache zero or null: zimage at: 80B842A0 810B4BC0 Uncompressing Linux at load address 80001000 Copy device tree to address 80B80EE0 Now, booting the kernel... [ 0.000000] Linux version 6.1.0-rc3+ (john@john) (mipsel-buildroot-linux-gnu-gcc.br_real (Buildroot 2021.11-4428-g6b6741b) 12.2.0, GNU ld (GNU Binutils) 2.39) #73 SMP Wed Nov 2 05:10:01 AEST 2022 [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: CPU: 0 PID: 0 at mm/slub.c:3416 kmem_cache_alloc+0x5a4/0x5e8 [ 0.000000] Modules linked in: [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 6.1.0-rc3+ #73 [ 0.000000] Stack : 810fff78 80084d98 00000000 00000004 00000000 00000000 80889d04 80c90000 [ 0.000000] 80920000 807bd328 8089d368 80923bd3 00000000 00000001 80889cb0 00000000 [ 0.000000] 00000000 00000000 807bd328 8084bcb1 00000002 00000002 00000001 6d6f4320 [ 0.000000] 00000000 80c97d3d 80c97d68 fffffffc 807bd328 00000000 00000000 00000000 [ 0.000000] 00000000 a0000000 80910000 8110a0b4 00000000 00000020 80010000 80010000 [ 0.000000] ... [ 0.000000] Call Trace: [ 0.000000] [<80008260>] show_stack+0x28/0xf0 [ 0.000000] [<8070c958>] dump_stack_lvl+0x60/0x80 [ 0.000000] [<8002e184>] __warn+0xc4/0xf8 [ 0.000000] [<8002e210>] warn_slowpath_fmt+0x58/0xa4 [ 0.000000] [<801c0fac>] kmem_cache_alloc+0x5a4/0x5e8 [ 0.000000] [<8092856c>] prom_soc_init+0x1fc/0x2b4 [ 0.000000] [<80928060>] prom_init+0x44/0xf0 [ 0.000000] [<80929214>] setup_arch+0x4c/0x6a8 [ 0.000000] [<809257e0>] start_kernel+0x88/0x7c0 [ 0.000000] [ 0.000000] ---[ end trace 0000000000000000 ]--- [ 0.000000] SoC Type: MediaTek MT7621 ver:1 eco:3 [ 0.000000] printk: bootconsole [early0] enabled Allowing soc_device_register to work exposed oops in the mt7621 phy pci, and pci controller drivers from soc_device_match_attr, due to missing sentinels in the quirks tables. These were fixed with: commit 819b885cd886 ("phy: ralink: mt7621-pci: add sentinel to quirks table") not yet applied ("PCI: mt7621: add sentinel to quirks table") Link: https://lore.kernel.org/linux-mm/becf2ac3-2a90-4f3a-96d9-a70f67c66e4a@app.fastmail.com/ Fixes: 71b9b5e0130d ("MIPS: ralink: mt7621: introduce 'soc_device' initialization") Signed-off-by: John Thomson Signed-off-by: Thomas Bogendoerfer Signed-off-by: Greg Kroah-Hartman

mips: ralink: mt7621: soc queries and tests as functions

2022-12-21T16:48:03+00:00

commit b4767d4c072583dec987225b6fe3f5524a735f42 upstream. Move the SoC register value queries and tests to specific functions, to remove repetition of logic No functional changes intended Signed-off-by: John Thomson Signed-off-by: Thomas Bogendoerfer Signed-off-by: Greg Kroah-Hartman

mips: ralink: mt7621: define MT7621_SYSC_BASE with __iomem

2022-12-21T16:48:03+00:00

commit a2cab953b4c077cc02878d424466d3a6eac32aaf upstream. So that MT7621_SYSC_BASE can be used later in multiple functions without needing to repeat this __iomem declaration each time Signed-off-by: John Thomson Signed-off-by: Thomas Bogendoerfer Signed-off-by: Greg Kroah-Hartman

mips: ralink: convert to DEFINE_SHOW_ATTRIBUTE

2022-09-19T14:40:39+00:00

Use DEFINE_SHOW_ATTRIBUTE helper macro to simplify the code. Signed-off-by: Liu Shixin Signed-off-by: Thomas Bogendoerfer

mips: ralink: Fix refcount leak in of.c

2022-06-21T15:04:30+00:00

In plat_of_remap_node(), plat_of_remap_node() will return a node pointer with refcount incremented. We should use of_node_put() when it is not used anymore. Signed-off-by: Liang He Signed-off-by: Thomas Bogendoerfer

Merge tag 'staging-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

2022-03-28T19:50:50+00:00

Pull staging driver updates from Greg KH: "Here is the big set of staging driver updates for 5.18-rc1. Loads of tiny cleanups for almost all staging drivers in here, nothing major at all. Highlights include: - remove the ashmem Android driver. It is long-dead and if there are any legacy userspace applications still using it, the Android kernel images will maintain it, the community shouldn't care about it anymore - wfx wifi driver major cleanups. Should be ready to merge out of staging soon, and will coordinate with the wifi maintainers after -rc1 is out - major cleanups and unwinding of the layers of the r8188eu driver. It's amazing just how many unneeded layers of abstraction is in there, just when we think it's done, another is found... - lots of tiny coding style cleanups in many other staging drivers. All have been in linux-next for a while with no reported problems" * tag 'staging-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (455 commits) staging: r8188eu: remove unnecessary memset in r8188eu staging: greybus: introduce pwm_ops::apply staging: rts5208: Resolve checkpatch.pl issues. staging: sm750fb: fix naming style staging: fbtft: Consider type of init sequence values in fbtft_init_display() staging: fbtft: Constify buf parameter in fbtft_dbg_hex() staging: mmal-vchiq: clear redundant item named bulk_scratch mips: dts: ralink: add MT7621 SoC staging: r8188eu: remove some unused local ieee80211 macros staging: r8188eu: make rtl8188e_process_phy_info static staging: r8188eu: remove unused function prototype staging: r8188eu: remove three unused receive defines staging: r8188eu: remove unnecessary initializations staging: rtl8192e: Fix spelling mistake "RESQUEST" -> "REQUEST" MAINTAINERS: remove the obsolete file entry for staging in ANDROID DRIVERS staging: r8188eu: proper error handling in rtw_init_drv_sw staging: r8188eu: call _cancel_timer_ex from _rtw_free_recv_priv staging: vt6656: Removed unused variable vt3342_vnt_threshold staging: vt6656: Removed unused variable bb_vga_0 staging: remove ashmem ...

Merge tag 'mips_5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

2022-03-25T16:35:19+00:00

Pull MIPS updates from Thomas Bogendoerfer: - added support for QCN550x (ath79) - enabled KCSAN - removed TX39XX support - various cleanups and fixes * tag 'mips_5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (31 commits) MIPS: Fix build error for loongson64 and sgi-ip27 MIPS: ingenic: correct unit node address MIPS: Fix wrong comments in asm/prom.h MIPS: Remove redundant definitions of device_tree_init() MIPS: Remove redundant check in device_tree_init() MIPS: pgalloc: fix memory leak caused by pgd_free() MIPS: RB532: fix return value of __setup handler MIPS: Only use current_stack_pointer on GCC MIPS: boot/compressed: Use array reference for image bounds mips: cdmm: Fix refcount leak in mips_cdmm_phys_base mips: remove reference to "newer Loongson-3" mips: Always permit to build u-boot images MIPS: Sanitise Cavium switch cases in TLB handler synthesizers DEC: Limit PMAX memory probing to R3k systems mips: DEC: honor CONFIG_MIPS_FP_SUPPORT=n MIPS: fix fortify panic when copying asm exception handlers mips: ralink: fix a refcount leak in ill_acc_of_setup() mips: Implement "current_stack_pointer" MIPS: Remove TX39XX support MIPS: Modernize READ_IMPLIES_EXEC ...

mips: dts: ralink: add MT7621 SoC

2022-03-16T14:10:23+00:00

The MT7621 system-on-a-chip includes an 880 MHz MIPS1004Kc dual-core CPU, a 5-port 10/100/1000 switch/PHY and one RGMII. Add the devicetrees for GB-PC1 and GB-PC2 devices which use MT7621 SoC. Acked-by: Sergio Paracuellos Acked-by: Thomas Bogendoerfer Signed-off-by: Arınç ÜNAL Link: https://lore.kernel.org/r/20220315160149.3617-1-arinc.unal@arinc9.com Signed-off-by: Greg Kroah-Hartman