kernel/linux.git/arch/arm, branch v6.18.21

ARM: clean up the memset64() C wrapper

2026-03-12T11:09:44+00:00

commit b52343d1cb47bb27ca32a3f4952cc2fd3cd165bf upstream. The current logic to split the 64-bit argument into its 32-bit halves is byte-order specific and a bit clunky. Use a union instead which is easier to read and works in all cases. GCC still generates the same machine code. While at it, rename the arguments of the __memset64() prototype to actually reflect their semantics. Signed-off-by: Thomas Weißschuh Signed-off-by: Linus Torvalds Reported-by: Ben Hutchings # for -stable Link: https://lore.kernel.org/all/1a11526ae3d8664f705b541b8d6ea57b847b49a8.camel@decadent.org.uk/ Suggested-by: https://lore.kernel.org/all/aZonkWMwpbFhzDJq@casper.infradead.org/ # for -stable Link: https://lore.kernel.org/all/aZonkWMwpbFhzDJq@casper.infradead.org/ Signed-off-by: Greg Kroah-Hartman

kbuild: Split .modinfo out from ELF_DETAILS

2026-03-12T11:09:44+00:00

commit 8678591b47469fe16357234efef9b260317b8be4 upstream. Commit 3e86e4d74c04 ("kbuild: keep .modinfo section in vmlinux.unstripped") added .modinfo to ELF_DETAILS while removing it from COMMON_DISCARDS, as it was needed in vmlinux.unstripped and ELF_DETAILS was present in all architecture specific vmlinux linker scripts. While this shuffle is fine for vmlinux, ELF_DETAILS and COMMON_DISCARDS may be used by other linker scripts, such as the s390 and x86 compressed boot images, which may not expect to have a .modinfo section. In certain circumstances, this could result in a bootloader failing to load the compressed kernel [1]. Commit ddc6cbef3ef1 ("s390/boot/vmlinux.lds.S: Ensure bzImage ends with SecureBoot trailer") recently addressed this for the s390 bzImage but the same bug remains for arm, parisc, and x86. The presence of .modinfo in the x86 bzImage was the root cause of the issue worked around with commit d50f21091358 ("kbuild: align modinfo section for Secureboot Authenticode EDK2 compat"). misc.c in arch/x86/boot/compressed includes lib/decompress_unzstd.c, which in turn includes lib/xxhash.c and its MODULE_LICENSE / MODULE_DESCRIPTION macros due to the STATIC definition. Split .modinfo out from ELF_DETAILS into its own macro and handle it in all vmlinux linker scripts. Discard .modinfo in the places where it was previously being discarded from being in COMMON_DISCARDS, as it has never been necessary in those uses. Cc: stable@vger.kernel.org Fixes: 3e86e4d74c04 ("kbuild: keep .modinfo section in vmlinux.unstripped") Reported-by: Ed W Closes: https://lore.kernel.org/587f25e0-a80e-46a5-9f01-87cb40cfa377@wildgooses.com/ [1] Tested-by: Ed W # x86_64 Link: https://patch.msgid.link/20260225-separate-modinfo-from-elf-details-v1-1-387ced6baf4b@kernel.org Signed-off-by: Nathan Chancellor Signed-off-by: Greg Kroah-Hartman

ARM: dts: imx53-usbarmory: Replace license text comment with SPDX identifier

2026-03-12T11:09:30+00:00

[ Upstream commit faa6baa36497958dd8fd5561daa37249779446d7 ] Replace verbatim license text with a `SPDX-License-Identifier`. The comment header mis-attributes this license to be "X11", but the license text does not include the last line "Except as contained in this notice, the name of the X Consortium shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from the X Consortium.". Therefore, this license is actually equivalent to the SPDX "MIT" license (confirmed by text diffing). Cc: Andrej Rosano Signed-off-by: Bence Csókás Acked-by: Andrej Rosano Signed-off-by: Shawn Guo Stable-dep-of: 43d67ec26b32 ("PCI: dwc: ep: Fix resizable BAR support for multi-PF configurations") Signed-off-by: Sasha Levin

ARM: omap2: Fix reference count leaks in omap_control_init()

2026-03-04T12:20:58+00:00

[ Upstream commit 93a04ab480c8bbcb7d9004be139c538c8a0c1bc8 ] The of_get_child_by_name() function increments the reference count of child nodes, causing multiple reference leaks in omap_control_init(): 1. scm_conf node never released in normal/error paths 2. clocks node leak when checking existence 3. Missing scm_conf release before np in error paths Fix these leaks by adding proper of_node_put() calls and separate error handling. Fixes: e5b635742e98 ("ARM: OMAP2+: control: add syscon support for register accesses") Cc: stable@vger.kernel.org Signed-off-by: Wentao Liang Reviewed-by: Andreas Kemnade Link: https://patch.msgid.link/20251217142122.1861292-1-vulab@iscas.ac.cn Signed-off-by: Kevin Hilman Signed-off-by: Sasha Levin

ARM: 9467/1: mm: Don't use %pK through printk

2026-03-04T12:20:39+00:00

[ Upstream commit 012ea376a5948b025f260aa45d2a6ec5d96674ea ] Restricted pointers ("%pK") were never meant to be used through printk(). They can acquire sleeping locks in atomic contexts. Switch to %px over the more secure %p as this usage is a debugging aid, gated behind CONFIG_DEBUG_VIRTUAL and used by WARN(). Link: https://lore.kernel.org/lkml/20250113171731-dc10e3c1-da64-4af0-b767-7c7070468023@linutronix.de/ Signed-off-by: Thomas Weißschuh Signed-off-by: Russell King (Oracle) Signed-off-by: Sasha Levin

arm: dts: lpc32xx: add clocks property to Motor Control PWM device tree node

2026-02-26T22:59:08+00:00

[ Upstream commit 71630e581a0e34c03757f5c1706f57c853b92555 ] Motor Control PWM depends on its own supply clock, the clock gate control is present in TIMCLK_CTRL1 register. Fixes: b7d41c937ed7 ("ARM: LPC32xx: Add the motor PWM to base dts file") Signed-off-by: Vladimir Zapolskiy Signed-off-by: Sasha Levin

ARM: dts: allwinner: sun5i-a13-utoo-p66: delete "power-gpios" property

2026-02-26T22:59:08+00:00

[ Upstream commit 0b2761eb1287bd9f62367cccf6626eb3107cef6f ] The P66's device tree includes the reference design dtsi files, which defines a node and properties for the touchpanel in the common design. The P66 dts file then overrides all the properties to match its own design, but as the touchpanel model is different, a different schema is matched. This other schema uses a different name for the GPIO. The original submission added the correct GPIO property, but did not delete the one inherited from the reference design, causing validation errors. Explicitly delete the incorrect GPIO property. Fixes: 2a53aff27236 ("ARM: dts: sun5i: Enable touchscreen on Utoo P66") Reviewed-by: Jernej Skrabec Link: https://patch.msgid.link/20251225103616.3203473-4-wens@kernel.org Signed-off-by: Chen-Yu Tsai Signed-off-by: Sasha Levin

ARM: VDSO: Patch out __vdso_clock_getres() if unavailable

2026-02-26T22:59:02+00:00

[ Upstream commit b9fecf0dddfc55cd7d02b0011494da3c613f7cde ] The vDSO code hides symbols which are non-functional. __vdso_clock_getres() was not added to this list when it got introduced. Fixes: 052e76a31b4a ("ARM: 8931/1: Add clock_getres entry point") Signed-off-by: Thomas Weißschuh Signed-off-by: Thomas Gleixner Link: https://patch.msgid.link/20251223-vdso-compat-time32-v1-6-97ea7a06a543@linutronix.de Signed-off-by: Sasha Levin

ARM: 9468/1: fix memset64() on big-endian

2026-02-11T12:41:42+00:00

commit 23ea2a4c72323feb6e3e025e8a6f18336513d5ad upstream. On big-endian systems the 32-bit low and high halves need to be swapped for the underlying assembly implementation to work correctly. Fixes: fd1d362600e2 ("ARM: implement memset32 & memset64") Cc: stable@vger.kernel.org Signed-off-by: Thomas Weißschuh Reviewed-by: Matthew Wilcox (Oracle) Reviewed-by: Arnd Bergmann Signed-off-by: Russell King (Oracle) Signed-off-by: Greg Kroah-Hartman

ARM: dts: microchip: sama7d65: fix size-cells property for i2c3

2026-01-30T09:32:14+00:00

commit 94ad504e67cd3be94fa1b2fed0cb87da0d8f9396 upstream. Fix the #size-cells property for i2c3 node and remove the dtbs_check error telling that "#size-cells: 0 was expected" from schema atmel,at91sam-i2c.yaml and i2c-controller.yaml. Fixes: b51e4aea3ecf ("ARM: dts: microchip: sama7d65: Add FLEXCOMs to sama7d65 SoC") Cc: stable@vger.kernel.org # 6.16+ Signed-off-by: Nicolas Ferre Link: https://lore.kernel.org/r/20260102170135.70717-3-nicolas.ferre@microchip.com Signed-off-by: Claudiu Beznea Signed-off-by: Greg Kroah-Hartman