brcm47xx: backport MIPS BCM47XX changes queued for 4.2

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 45906

1 files changed, 59 insertions, 0 deletions

diff --git a/target/linux/brcm47xx/patches-4.0/031-01-MIPS-BCM47XX-Make-sure-NVRAM-buffer-ends-with-0.patch b/target/linux/brcm47xx/patches-4.0/031-01-MIPS-BCM47XX-Make-sure-NVRAM-buffer-ends-with-0.patch
new file mode 100644
index 0000000000..05b6d2d42e
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.0/031-01-MIPS-BCM47XX-Make-sure-NVRAM-buffer-ends-with-0.patch
@@ -0,0 +1,59 @@
+From 4ddb225376a2802a4e20e16f71c6d37b679e3169 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Tue, 12 May 2015 18:46:11 +0200
+Subject: [PATCH] MIPS: BCM47XX: Make sure NVRAM buffer ends with \0
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This will simplify reading its contents.
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+Cc: linux-mips@linux-mips.org
+Cc: Hauke Mehrtens <hauke@hauke-m.de>
+Cc: Hante Meuleman <meuleman@broadcom.com>
+Cc: Ian Kent <raven@themaw.net>
+Patchwork: https://patchwork.linux-mips.org/patch/10031/
+Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
+---
+ arch/mips/bcm47xx/nvram.c | 9 +++++----
+ 1 file changed, 5 insertions(+), 4 deletions(-)
+
+diff --git a/arch/mips/bcm47xx/nvram.c b/arch/mips/bcm47xx/nvram.c
+index ba632ff..dee1c32 100644
+--- a/arch/mips/bcm47xx/nvram.c
++++ b/arch/mips/bcm47xx/nvram.c
+@@ -98,7 +98,7 @@ found:
+ 		pr_err("The nvram size accoridng to the header seems to be bigger than the partition on flash\n");
+ 	if (header->len > NVRAM_SPACE)
+ 		pr_err("nvram on flash (%i bytes) is bigger than the reserved space in memory, will just copy the first %i bytes\n",
+-		       header->len, NVRAM_SPACE);
++		       header->len, NVRAM_SPACE - 1);
+ 
+ 	src = (u32 *)header;
+ 	dst = (u32 *)nvram_buf;
+@@ -106,6 +106,7 @@ found:
+ 		*dst++ = __raw_readl(src++);
+ 	for (; i < header->len && i < NVRAM_SPACE && i < size; i += 4)
+ 		*dst++ = readl(src++);
++	nvram_buf[NVRAM_SPACE - 1] = '\0';
+ 
+ 	return 0;
+ }
+@@ -150,10 +151,10 @@ static int nvram_init(void)
+ 		u8 *dst = (uint8_t *)nvram_buf;
+ 		size_t len = header.len;
+ 
+-		if (header.len > NVRAM_SPACE) {
++		if (len >= NVRAM_SPACE) {
++			len = NVRAM_SPACE - 1;
+ 			pr_err("nvram on flash (%i bytes) is bigger than the reserved space in memory, will just copy the first %i bytes\n",
+-				header.len, NVRAM_SPACE);
+-			len = NVRAM_SPACE;
++				header.len, len);
+ 		}
+ 
+ 		err = mtd_read(mtd, 0, len, &bytes_read, dst);
+-- 
+1.8.4.5
+