From 55fc280e951ab2b39f3dcb640edc1b1eebc6d173 Mon Sep 17 00:00:00 2001 From: "Rob Herring (Arm)" Date: Mon, 31 Aug 2026 14:43:51 -0500 Subject: Input: tsc2007 - read "ti,poll-period" as u32 The "ti,poll-period" property is documented as a normal uint32 cell. The driver used a u64 helper, which makes the helper type disagree with the schema even though the stored value is still small. Read "ti,poll-period" with the u32 helper matching the documented DT cell size. Assisted-by: Codex:gpt-5-5 Signed-off-by: Rob Herring (Arm) Link: https://patch.msgid.link/20260831194352.1185860-1-robh@kernel.org Signed-off-by: Dmitry Torokhov --- arch/sh/mm/kmap.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 arch/sh/mm/kmap.c (limited to 'arch/sh/mm/kmap.c') diff --git a/arch/sh/mm/kmap.c b/arch/sh/mm/kmap.c new file mode 100644 index 000000000..c9f32d5a5 --- /dev/null +++ b/arch/sh/mm/kmap.c @@ -0,0 +1,66 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * arch/sh/mm/kmap.c + * + * Copyright (C) 1999, 2000, 2002 Niibe Yutaka + * Copyright (C) 2002 - 2009 Paul Mundt + */ +#include +#include +#include +#include +#include +#include +#include +#include + +static pte_t *kmap_coherent_pte; + +void __init kmap_coherent_init(void) +{ + unsigned long vaddr; + + /* cache the first coherent kmap pte */ + vaddr = __fix_to_virt(FIX_CMAP_BEGIN); + kmap_coherent_pte = virt_to_kpte(vaddr); +} + +void *kmap_coherent(struct page *page, unsigned long addr) +{ + struct folio *folio = page_folio(page); + enum fixed_addresses idx; + unsigned long vaddr; + + BUG_ON(!test_bit(PG_dcache_clean, &folio->flags.f)); + + preempt_disable(); + pagefault_disable(); + + idx = FIX_CMAP_END - + (((addr >> PAGE_SHIFT) & (FIX_N_COLOURS - 1)) + + (FIX_N_COLOURS * smp_processor_id())); + + vaddr = __fix_to_virt(idx); + + BUG_ON(!pte_none(*(kmap_coherent_pte - idx))); + set_pte(kmap_coherent_pte - idx, mk_pte(page, PAGE_KERNEL)); + + return (void *)vaddr; +} + +void kunmap_coherent(void *kvaddr) +{ + if (kvaddr >= (void *)FIXADDR_START) { + unsigned long vaddr = (unsigned long)kvaddr & PAGE_MASK; + enum fixed_addresses idx = __virt_to_fix(vaddr); + + /* XXX.. Kill this later, here for sanity at the moment.. */ + __flush_purge_region((void *)vaddr, PAGE_SIZE); + + pte_clear(&init_mm, vaddr, kmap_coherent_pte - idx); + local_flush_tlb_one(get_asid(), vaddr); + } + + pagefault_enable(); + preempt_enable(); +} -- cgit v1.3.1