linux-kernel - [PATCH 07/18] ARC: ioremap: use more commonly used PAGE

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Date:   Tue, 10 Aug 2021 17:42:47 -0700
From:   Vineet Gupta <vgupta@...nel.org>
To:     linux-snps-arc@...ts.infradead.org
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        Anshuman Khandual <anshuman.khandual@....com>,
        Mike Rapoport <rppt@...nel.org>,
        Vineet Gupta <vgupta@...nel.org>
Subject: [PATCH 07/18] ARC: ioremap: use more commonly used PAGE_KERNEL based uncached flag

and remove the one off uncached definition for ARC

Signed-off-by: Vineet Gupta <vgupta@...nel.org>
---
 arch/arc/include/asm/pgtable.h | 3 ---
 arch/arc/mm/ioremap.c          | 3 ++-
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h
index 80b57c14b430..b054c14f8bf6 100644
--- a/arch/arc/include/asm/pgtable.h
+++ b/arch/arc/include/asm/pgtable.h
@@ -103,9 +103,6 @@
  */
 #define PAGE_KERNEL          __pgprot(_K_PAGE_PERMS | _PAGE_CACHEABLE)
 
-/* ioremap */
-#define PAGE_KERNEL_NO_CACHE __pgprot(_K_PAGE_PERMS)
-
 /* Masks for actual TLB "PD"s */
 #define PTE_BITS_IN_PD0		(_PAGE_GLOBAL | _PAGE_PRESENT | _PAGE_HW_SZ)
 #define PTE_BITS_RWX		(_PAGE_EXECUTE | _PAGE_WRITE | _PAGE_READ)
diff --git a/arch/arc/mm/ioremap.c b/arch/arc/mm/ioremap.c
index 052bbd8b1e5f..0ee75aca6e10 100644
--- a/arch/arc/mm/ioremap.c
+++ b/arch/arc/mm/ioremap.c
@@ -39,7 +39,8 @@ void __iomem *ioremap(phys_addr_t paddr, unsigned long size)
 	if (arc_uncached_addr_space(paddr))
 		return (void __iomem *)(u32)paddr;
 
-	return ioremap_prot(paddr, size, pgprot_val(PAGE_KERNEL_NO_CACHE));
+	return ioremap_prot(paddr, size,
+			    pgprot_val(pgprot_noncached(PAGE_KERNEL)));
 }
 EXPORT_SYMBOL(ioremap);
 
-- 
2.25.1