kernel/linux.git/drivers/mux, branch v7.0-rc7

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

mux: mmio: fix regmap leak on probe failure

2026-02-05T16:07:37+00:00

The mmio regmap that may be allocated during probe is never freed. Switch to using the device managed allocator so that the regmap is released on probe failures (e.g. probe deferral) and on driver unbind. Fixes: 61de83fd8256 ("mux: mmio: Do not use syscon helper to build regmap") Cc: stable@vger.kernel.org # 6.16 Cc: Andrew Davis Signed-off-by: Johan Hovold Acked-by: Andrew Davis Link: https://patch.msgid.link/20251127134702.1915-1-johan@kernel.org Signed-off-by: Greg Kroah-Hartman

mux: mmio: Fix IS_ERR() vs NULL check in probe()

2026-01-16T15:42:08+00:00

The devm_kmalloc() function never returns error pointers, it returns NULL on error. Fix the error checking. Fixes: 4863cb2b0f50 ("mux: mmio: Add suspend and resume support") Signed-off-by: Dan Carpenter Reviewed-by: Krzysztof Kozlowski Link: https://patch.msgid.link/aSsIP7oKrhKfCUv3@stanley.mountain Signed-off-by: Greg Kroah-Hartman

mux: mmio: Add suspend and resume support

2025-11-26T14:09:30+00:00

The status of each mux is read during suspend and stored in the private memory of the mux_chip. Then the state is restored during the resume. Reviewed-by: Andrew Davis Signed-off-by: Thomas Richard (TI.com) Link: https://patch.msgid.link/20251013-mux-mmio-resume-support-v5-1-de9467ceb2b2@bootlin.com Signed-off-by: Greg Kroah-Hartman

Merge tag 'hardening-v6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

2025-07-29T00:16:12+00:00

Pull hardening updates from Kees Cook: - Introduce and start using TRAILING_OVERLAP() helper for fixing embedded flex array instances (Gustavo A. R. Silva) - mux: Convert mux_control_ops to a flex array member in mux_chip (Thorsten Blum) - string: Group str_has_prefix() and strstarts() (Andy Shevchenko) - Remove KCOV instrumentation from __init and __head (Ritesh Harjani, Kees Cook) - Refactor and rename stackleak feature to support Clang - Add KUnit test for seq_buf API - Fix KUnit fortify test under LTO * tag 'hardening-v6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (22 commits) sched/task_stack: Add missing const qualifier to end_of_stack() kstack_erase: Support Clang stack depth tracking kstack_erase: Add -mgeneral-regs-only to silence Clang warnings init.h: Disable sanitizer coverage for __init and __head kstack_erase: Disable kstack_erase for all of arm compressed boot code x86: Handle KCOV __init vs inline mismatches arm64: Handle KCOV __init vs inline mismatches s390: Handle KCOV __init vs inline mismatches arm: Handle KCOV __init vs inline mismatches mips: Handle KCOV __init vs inline mismatch powerpc/mm/book3s64: Move kfence and debug_pagealloc related calls to __init section configs/hardening: Enable CONFIG_INIT_ON_FREE_DEFAULT_ON configs/hardening: Enable CONFIG_KSTACK_ERASE stackleak: Split KSTACK_ERASE_CFLAGS from GCC_PLUGINS_CFLAGS stackleak: Rename stackleak_track_stack to __sanitizer_cov_stack_depth stackleak: Rename STACKLEAK to KSTACK_ERASE seq_buf: Introduce KUnit tests string: Group str_has_prefix() and strstarts() kunit/fortify: Add back "volatile" for sizeof() constants acpi: nfit: intel: avoid multiple -Wflex-array-member-not-at-end warnings ...

mux: mmio: Fix missing CONFIG_REGMAP_MMIO

2025-07-04T14:27:08+00:00

MMIO mux uses now regmap_init_mmio(), so one way or another CONFIG_REGMAP_MMIO should be enabled, because there are no stubs for !REGMAP_MMIO case: ERROR: modpost: "__regmap_init_mmio_clk" [drivers/mux/mux-mmio.ko] undefined! Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202505150312.dYbBqUhG-lkp@intel.com/ Fixes: 61de83fd8256 ("mux: mmio: Do not use syscon helper to build regmap") Acked-by: Arnd Bergmann Link: https://lore.kernel.org/r/20250521152354.92720-2-krzysztof.kozlowski@linaro.org Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20250616093841.31985-2-krzysztof.kozlowski@linaro.org Signed-off-by: Greg Kroah-Hartman

mux: Convert mux_control_ops to a flex array member in mux_chip

2025-06-18T21:20:32+00:00

Convert mux_control_ops to a flexible array member at the end of the mux_chip struct and add the __counted_by() compiler attribute to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and CONFIG_FORTIFY_SOURCE. Use struct_size() to calculate the number of bytes to allocate for a new mux chip and to remove the following Coccinelle/coccicheck warning: WARNING: Use struct_size Use size_add() to safely add any extra bytes. No functional changes intended. Link: https://github.com/KSPP/linux/issues/83 Signed-off-by: Thorsten Blum Link: https://lore.kernel.org/r/20250610104106.1948-2-thorsten.blum@linux.dev Signed-off-by: Kees Cook

mux: adgs1408: fix Wvoid-pointer-to-enum-cast warning

2025-05-08T15:12:08+00:00

'chip_id' is an enum, thus cast of pointer on 64-bit compile test with W=1 causes: adgs1408.c:63:12: error: cast to smaller integer type 'enum adgs1408_chip_id' from 'const void *' [-Werror,-Wvoid-pointer-to-enum-cast] Reviewed-by: Nuno Sá Link: https://lore.kernel.org/r/20250501181819.164207-2-krzysztof.kozlowski@linaro.org Signed-off-by: Krzysztof Kozlowski

mux: gpio: add optional regulator support

2025-05-08T12:55:36+00:00

Some of the external muxes needs powering up using a regulator. This is the case with Lenovo T14s laptop which has a external audio mux to handle US/EURO headsets. Add support to the driver to handle this optional regulator. Signed-off-by: Srinivas Kandagatla Tested-by: Christopher Obbard Reviewed-by: Johan Hovold Tested-by: Johan Hovold Link: https://lore.kernel.org/r/20250327100633.11530-3-srinivas.kandagatla@linaro.org [krzk: Adjust dev_err message per Johan's review] Signed-off-by: Krzysztof Kozlowski