openwrtv4/target/linux/brcm47xx/patches-3.18/031-03-MIPS-BCM47XX-Use-helpers-for-reading-NVRAM-content.patch

From 23d2bc42aceb829eaf90c694941e4523c22865e8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Wed, 10 Dec 2014 11:49:53 +0100
Subject: [PATCH] MIPS: BCM47XX: Use helpers for reading NVRAM content
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Also drop some unneeded memset-s.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8661/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
 arch/mips/bcm47xx/nvram.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

--- a/arch/mips/bcm47xx/nvram.c
+++ b/arch/mips/bcm47xx/nvram.c
@@ -91,7 +91,6 @@ static int nvram_find_and_copy(void __io
 	return -ENXIO;
 
 found:
-
 	if (header->len > size)
 		pr_err("The nvram size accoridng to the header seems to be bigger than the partition on flash\n");
 	if (header->len > NVRAM_SPACE)
@@ -101,10 +100,9 @@ found:
 	src = (u32 *) header;
 	dst = (u32 *) nvram_buf;
 	for (i = 0; i < sizeof(struct nvram_header); i += 4)
-		*dst++ = *src++;
+		*dst++ = __raw_readl(src++);
 	for (; i < header->len && i < NVRAM_SPACE && i < size; i += 4)
-		*dst++ = le32_to_cpu(*src++);
-	memset(dst, 0x0, NVRAM_SPACE - i);
+		*dst++ = readl(src++);
 
 	return 0;
 }
@@ -165,7 +163,6 @@ static int nvram_init(void)
 			err = mtd_read(mtd, from, len, &bytes_read, dst);
 			if (err)
 				return err;
-			memset(dst + bytes_read, 0x0, NVRAM_SPACE - bytes_read);
 
 			return 0;
 		}