kernel: add bcm47xxpart patches sent for 4.5 merge window

This replaces old bcm53xx patch for scanning whole flash and makes
bcm47xxpart compatible with NAND.

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@47800 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 33 insertions, 0 deletions

diff --git a/target/linux/generic/patches-4.1/143-mtd-bcm47xxpart-limit-scanned-flash-area-on-BCM47XX-.patch b/target/linux/generic/patches-4.1/143-mtd-bcm47xxpart-limit-scanned-flash-area-on-BCM47XX-.patch
new file mode 100644
index 0000000000..aa315143fe
--- /dev/null
+++ b/target/linux/generic/patches-4.1/143-mtd-bcm47xxpart-limit-scanned-flash-area-on-BCM47XX-.patch
@@ -0,0 +1,33 @@
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Sat, 5 Dec 2015 02:03:32 +0100
+Subject: [PATCH] mtd: bcm47xxpart: limit scanned flash area on BCM47XX (MIPS)
+ only
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+We allowed using bcm47xxpart on BCM5301X arch with commit:
+9e3afa5f5c7 ("mtd: bcm47xxpart: allow enabling on ARCH_BCM_5301X")
+
+BCM5301X devices may contain some partitions in higher memory, e.g.
+Netgear R8000 has board_data at 0x2600000. To detect them we should
+use size limit on MIPS only.
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+---
+ drivers/mtd/bcm47xxpart.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/mtd/bcm47xxpart.c
++++ b/drivers/mtd/bcm47xxpart.c
+@@ -118,8 +118,8 @@ static int bcm47xxpart_parse(struct mtd_info *master,
+ 	/* Parse block by block looking for magics */
+ 	for (offset = 0; offset <= master->size - blocksize;
+ 	     offset += blocksize) {
+-		/* Nothing more in higher memory */
+-		if (offset >= 0x2000000)
++		/* Nothing more in higher memory on BCM47XX (MIPS) */
++		if (config_enabled(CONFIG_BCM47XX) && offset >= 0x2000000)
+ 			break;
+ 
+ 		if (curr_part >= BCM47XXPART_MAX_PARTS) {