From dd70bcc0895463dadf1976b925bb5e705a1ed2cb Mon Sep 17 00:00:00 2001
From: John Crispin <john@openwrt.org>
Date: Wed, 23 Mar 2016 11:12:34 +0000
Subject: [PATCH] mediatek: patch block2mtd to allow cmdlineparts to work
Signed-off-by: John Crispin <blogic@openwrt.org>
SVN-Revision: 49067
---
target/linux/mediatek/config-4.4 | 3 +-
.../mediatek/patches-4.4/0100-block2mtd.patch | 32 +++++++++++++++++++
2 files changed, 34 insertions(+), 1 deletion(-)
create mode 100644 target/linux/mediatek/patches-4.4/0100-block2mtd.patch
diff --git a/target/linux/mediatek/config-4.4 b/target/linux/mediatek/config-4.4
index 259e65cb36..f9d5d06765 100644
--- a/target/linux/mediatek/config-4.4
+++ b/target/linux/mediatek/config-4.4
@@ -56,7 +56,7 @@ CONFIG_CLKSRC_MMIO=y
CONFIG_CLKSRC_OF=y
CONFIG_CLKSRC_PROBE=y
CONFIG_CLONE_BACKWARDS=y
-CONFIG_CMDLINE="earlyprintk console=ttyS0,115200 block2mtd=/dev/mmcblk0,65536,eMMC,5 mtdparts=eMMC:256k(mbr),512k(uboot),256k(config),256k(factory),32M(bootimg),32M(recovery),1024M(rootfs),2048M(usrdata),-(bmtpool)"
+CONFIG_CMDLINE="earlyprintk console=ttyS0,115200 block2mtd.block2mtd=/dev/mmcblk0,65536,eMMC,5 mtdparts=eMMC:256k(mbr)ro,512k(uboot)ro,256k(config)ro,256k(factory)ro,32M(bootimg),32M(recovery),1024M(rootfs),2048M(usrdata),-(bmtpool)"
CONFIG_CMDLINE_FORCE=y
CONFIG_COMMON_CLK=y
CONFIG_COMMON_CLK_MEDIATEK=y
@@ -279,6 +279,7 @@ CONFIG_MMC_SDHCI_PLTFM=y
# CONFIG_MMC_TIFM_SD is not set
CONFIG_MODULES_USE_ELF_REL=y
CONFIG_MTD_BLOCK2MTD=y
+CONFIG_MTD_CMDLINE_PARTS=y
CONFIG_MTD_M25P80=y
CONFIG_MTD_SPI_NOR=y
CONFIG_MTK_INFRACFG=y
diff --git a/target/linux/mediatek/patches-4.4/0100-block2mtd.patch b/target/linux/mediatek/patches-4.4/0100-block2mtd.patch
new file mode 100644
index 0000000000..7fbd6d4019
--- /dev/null
+++ b/target/linux/mediatek/patches-4.4/0100-block2mtd.patch
@@ -0,0 +1,32 @@
+--- a/drivers/mtd/devices/block2mtd.c
++++ b/drivers/mtd/devices/block2mtd.c
+@@ -32,6 +32,8 @@
+ #include <linux/slab.h>
+ #include <linux/major.h>
+
++static const char * const block2mtd_probe_types[] = { "cmdlinepart", NULL };
++
+ /* Info for the block device */
+ struct block2mtd_dev {
+ struct list_head list;
+@@ -227,6 +229,7 @@
+ #endif
+ const fmode_t mode = FMODE_READ | FMODE_WRITE | FMODE_EXCL;
+ struct block_device *bdev = ERR_PTR(-ENODEV);
++ struct mtd_part_parser_data ppdata = { 0 };
+ struct block2mtd_dev *dev;
+ struct mtd_partition *part;
+ char *name;
+@@ -307,11 +310,7 @@
+ dev->mtd.priv = dev;
+ dev->mtd.owner = THIS_MODULE;
+
+- part = kzalloc(sizeof(struct mtd_partition), GFP_KERNEL);
+- part->name = name;
+- part->offset = 0;
+- part->size = dev->mtd.size;
+- if (mtd_device_register(&dev->mtd, part, 1)) {
++ if (mtd_device_parse_register(&dev->mtd, block2mtd_probe_types, &ppdata, NULL, 0)) {
+ /* Device didn't get added, so free the entry */
+ goto err_destroy_mutex;
+ }
--
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