kernel/linux.git/arch/arm, branch v6.6.132

ARM: clean up the memset64() C wrapper

2026-03-25T10:05:38+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

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

2026-03-04T12:21:04+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

2026-03-04T12:20:57+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

2026-03-04T12:19:37+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: lpc32xx: Set motor PWM #pwm-cells property value to 3 cells

2026-03-04T12:19:37+00:00

[ Upstream commit 65ae9ea77e1f2a20ad2866f99596df7ccdbd3b95 ] Since commit 4cd2f417a0ac ("dt-bindings: pwm: Convert lpc32xx-pwm.txt to yaml format") both types of PWM controlles on NXP LPC32xx SoC fairly gained 3 cells, reflect it in the platform dtsi file. The change removes a dt binding checker warning: mpwm@400e8000: #pwm-cells:0:0: 3 was expected Cc: Uwe Kleine-König Acked-by: Uwe Kleine-König Reviewed-by: Frank Li Signed-off-by: Vladimir Zapolskiy Stable-dep-of: 71630e581a0e ("arm: dts: lpc32xx: add clocks property to Motor Control PWM device tree node") Signed-off-by: Sasha Levin

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

2026-03-04T12:19:36+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

2026-03-04T12:19:30+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

2026-02-11T12:39:08+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: imx6q-ba16: fix RTC interrupt level

2026-01-17T15:29:56+00:00

[ Upstream commit e6a4eedd49ce27c16a80506c66a04707e0ee0116 ] RTC interrupt level should be set to "LOW". This was revealed by the introduction of commit: f181987ef477 ("rtc: m41t80: use IRQ flags obtained from fwnode") which changed the way IRQ type is obtained. Fixes: 56c27310c1b4 ("ARM: dts: imx: Add Advantech BA-16 Qseven module") Signed-off-by: Ian Ray Signed-off-by: Shawn Guo Signed-off-by: Sasha Levin

ARM: 9461/1: Disable HIGHPTE on PREEMPT_RT kernels

2026-01-17T15:29:55+00:00

[ Upstream commit fedadc4137234c3d00c4785eeed3e747fe9036ae ] gup_pgd_range() is invoked with disabled interrupts and invokes __kmap_local_page_prot() via pte_offset_map(), gup_p4d_range(). With HIGHPTE enabled, __kmap_local_page_prot() invokes kmap_high_get() which uses a spinlock_t via lock_kmap_any(). This leads to an sleeping-while-atomic error on PREEMPT_RT because spinlock_t becomes a sleeping lock and must not be acquired in atomic context. The loop in map_new_virtual() uses wait_queue_head_t for wake up which also is using a spinlock_t. Since HIGHPTE is rarely needed at all, turn it off for PREEMPT_RT to allow the use of get_user_pages_fast(). [arnd: rework patch to turn off HIGHPTE instead of HAVE_PAST_GUP] Co-developed-by: Arnd Bergmann Acked-by: Linus Walleij Reviewed-by: Arnd Bergmann Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Russell King (Oracle) Signed-off-by: Sasha Levin