linux.git/arch/arm, branch v6.18.8

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

ARM: dts: microchip: sama7d65: fix the ranges property for flx9

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

commit aabc977aa472ccf756372ae594d890022c19c9c8 upstream.

Update the ranges property for the flexcom9 as per the datasheet and
align with the reg property.

Fixes: b51e4aea3ecf ("ARM: dts: microchip: sama7d65: Add FLEXCOMs to sama7d65 SoC")
Cc: stable@vger.kernel.org # 6.16+
Signed-off-by: Hari Prasath Gujulan Elango 
Signed-off-by: Nicolas Ferre 
Link: https://lore.kernel.org/r/20260102170135.70717-2-nicolas.ferre@microchip.com
Signed-off-by: Claudiu Beznea 
Signed-off-by: Greg Kroah-Hartman

ARM: dts: imx6q-ba16: fix RTC interrupt level

2026-01-17T15:35:20+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

2026-01-17T15:35:16+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

ARM: dts: microchip: sama7g5: fix uart fifo size to 32

2026-01-02T11:57:31+00:00

commit 5654889a94b0de5ad6ceae3793e7f5e0b61b50b6 upstream.

On some flexcom nodes related to uart, the fifo sizes were wrong: fix
them to 32 data.

Fixes: 7540629e2fc7 ("ARM: dts: at91: add sama7g5 SoC DT and sama7g5-ek")
Cc: stable@vger.kernel.org # 5.15+
Signed-off-by: Nicolas Ferre 
Link: https://lore.kernel.org/r/20251114103313.20220-2-nicolas.ferre@microchip.com
Signed-off-by: Claudiu Beznea 
Signed-off-by: Greg Kroah-Hartman

ARM: dts: microchip: sama7d65: fix uart fifo size to 32

2026-01-02T11:57:31+00:00

commit 1f591be0a02c697f65a21be35f1d74117bbf4be2 upstream.

On some flexcom nodes related to uart, the fifo sizes were wrong: fix
them to 32 data.  Note that product datasheet is being reviewed to fix
inconsistency, but this value is validated by product's designers.

Fixes: 261dcfad1b59 ("ARM: dts: microchip: add sama7d65 SoC DT")
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/20251114103313.20220-1-nicolas.ferre@microchip.com
Signed-off-by: Claudiu Beznea 
Signed-off-by: Greg Kroah-Hartman

ARM: dts: microchip: sama5d2: fix spi flexcom fifo size to 32

2026-01-02T11:57:30+00:00

commit 7d5864dc5d5ea6a35983dd05295fb17f2f2f44ce upstream.

Unlike standalone spi peripherals, on sama5d2, the flexcom spi have fifo
size of 32 data. Fix flexcom/spi nodes where this property is wrong.

Fixes: 6b9a3584c7ed ("ARM: dts: at91: sama5d2: Add missing flexcom definitions")
Cc: stable@vger.kernel.org # 5.8+
Signed-off-by: Nicolas Ferre 
Link: https://lore.kernel.org/r/20251114140225.30372-1-nicolas.ferre@microchip.com
Signed-off-by: Claudiu Beznea 
Signed-off-by: Greg Kroah-Hartman

ARM: 9464/1: fix input-only operand modification in load_unaligned_zeropad()

2025-12-18T13:03:39+00:00

[ Upstream commit edb924a7211c9aa7a4a415e03caee4d875e46b8e ]

In the inline assembly inside load_unaligned_zeropad(), the "addr" is
constrained as input-only operand. The compiler assumes that on exit
from the asm statement these operands contain the same values as they
had before executing the statement, but when kernel page fault happened, the assembly fixup code "bic %2 %2, #0x3" modify the value of "addr", which may lead to an unexpected behavior.

Use a temporary variable "tmp" to handle it, instead of modifying the
input-only operand, just like what arm64's load_unaligned_zeropad()
does.

Fixes: b9a50f74905a ("ARM: 7450/1: dcache: select DCACHE_WORD_ACCESS for little-endian ARMv6+ CPUs")
Co-developed-by: Xie Yuanbin 
Signed-off-by: Xie Yuanbin 
Signed-off-by: Liyuan Pang 
Signed-off-by: Russell King (Oracle) 
Signed-off-by: Sasha Levin

ARM: dts: samsung: exynos4412-midas: turn off SDIO WLAN chip during system suspend

2025-12-18T13:03:25+00:00

[ Upstream commit 2ff147fdfa99b8cbb8c2833e685fde7c42580ae6 ]

Commit 8c3170628a9c ("wifi: brcmfmac: keep power during suspend if board
requires it") changed default behavior of the BRCMFMAC driver, which now
keeps SDIO card powered during system suspend to enable optional support
for WOWL. This feature is not supported by the legacy Exynos4 based
boards and leads to WLAN disfunction after system suspend/resume cycle.
Fix this by annotating SDIO host used by WLAN chip with
'cap-power-off-card' property, which should have been there from the
beginning.

Fixes: f77cbb9a3e5d ("ARM: dts: exynos: Add bcm4334 device node to Trats2")
Signed-off-by: Marek Szyprowski 
Link: https://patch.msgid.link/20251126102618.3103517-5-m.szyprowski@samsung.com
Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Sasha Levin

ARM: dts: samsung: exynos4210-trats: turn off SDIO WLAN chip during system suspend

2025-12-18T13:03:25+00:00

[ Upstream commit 97cc9c346b2c9cde075b9420fc172137d2427711 ]

Commit 8c3170628a9c ("wifi: brcmfmac: keep power during suspend if board
requires it") changed default behavior of the BRCMFMAC driver, which now
keeps SDIO card powered during system suspend to enable optional support
for WOWL. This feature is not supported by the legacy Exynos4 based
boards and leads to WLAN disfunction after system suspend/resume cycle.
Fix this by annotating SDIO host used by WLAN chip with
'cap-power-off-card' property, which should have been there from the
beginning.

Fixes: a19f6efc01df ("ARM: dts: exynos: Enable WLAN support for the Trats board")
Signed-off-by: Marek Szyprowski 
Link: https://patch.msgid.link/20251126102618.3103517-4-m.szyprowski@samsung.com
Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Sasha Levin