1 files changed, 0 insertions, 69 deletions
diff --git a/arch/metag/mm/maccess.c b/arch/metag/mm/maccess.c
deleted file mode 100644
index c227551..0000000
--- a/arch/metag/mm/maccess.c
+++ /dev/null
@@ -1,69 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * safe read and write memory routines callable while atomic
- *
- * Copyright 2012 Imagination Technologies
- */
-
-#include <linux/uaccess.h>
-#include <asm/io.h>
-
-/*
- * The generic probe_kernel_write() uses the user copy code which can split the
- * writes if the source is unaligned, and repeats writes to make exceptions
- * precise. We override it here to avoid these things happening to memory mapped
- * IO memory where they could have undesired effects.
- * Due to the use of CACHERD instruction this only works on Meta2 onwards.
- */
-#ifdef CONFIG_METAG_META21
-long probe_kernel_write(void *dst, const void *src, size_t size)
-{
-	unsigned long ldst = (unsigned long)dst;
-	void __iomem *iodst = (void __iomem *)dst;
-	unsigned long lsrc = (unsigned long)src;
-	const u8 *psrc = (u8 *)src;
-	unsigned int pte, i;
-	u8 bounce[8] __aligned(8);
-
-	if (!size)
-		return 0;
-
-	/* Use the write combine bit to decide is the destination is MMIO. */
-	pte = __builtin_meta2_cacherd(dst);
-
-	/* Check the mapping is valid and writeable. */
-	if ((pte & (MMCU_ENTRY_WR_BIT | MMCU_ENTRY_VAL_BIT))
-	    != (MMCU_ENTRY_WR_BIT | MMCU_ENTRY_VAL_BIT))
-		return -EFAULT;
-
-	/* Fall back to generic version for cases we're not interested in. */
-	if (pte & MMCU_ENTRY_WRC_BIT	|| /* write combined memory */
-	    (ldst & (size - 1))		|| /* destination unaligned */
-	    size > 8			|| /* more than max write size */
-	    (size & (size - 1)))	   /* non power of 2 size */
-		return __probe_kernel_write(dst, src, size);
-
-	/* If src is unaligned, copy to the aligned bounce buffer first. */
-	if (lsrc & (size - 1)) {
-		for (i = 0; i < size; ++i)
-			bounce[i] = psrc[i];
-		psrc = bounce;
-	}
-
-	switch (size) {
-	case 1:
-		writeb(*psrc, iodst);
-		break;
-	case 2:
-		writew(*(const u16 *)psrc, iodst);
-		break;
-	case 4:
-		writel(*(const u32 *)psrc, iodst);
-		break;
-	case 8:
-		writeq(*(const u64 *)psrc, iodst);
-		break;
-	}
-	return 0;
-}
-#endif