diff options
Diffstat (limited to 'target/linux/generic/patches-3.14/490-ubi-auto-attach-mtd-device-named-ubi-or-data-on-boot.patch')
| -rw-r--r-- | target/linux/generic/patches-3.14/490-ubi-auto-attach-mtd-device-named-ubi-or-data-on-boot.patch | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.14/490-ubi-auto-attach-mtd-device-named-ubi-or-data-on-boot.patch b/target/linux/generic/patches-3.14/490-ubi-auto-attach-mtd-device-named-ubi-or-data-on-boot.patch new file mode 100644 index 0000000000..440c6bf050 --- /dev/null +++ b/target/linux/generic/patches-3.14/490-ubi-auto-attach-mtd-device-named-ubi-or-data-on-boot.patch @@ -0,0 +1,68 @@ +From 8a52e4100d7c3a4a1dfddfa02b8864a9b0068c13 Mon Sep 17 00:00:00 2001 +From: Daniel Golle <daniel@makrotopia.org> +Date: Sat, 17 May 2014 03:36:18 +0200 +Subject: [PATCH 1/5] ubi: auto-attach mtd device named "ubi" or "data" on boot +To: openwrt-devel@lists.openwrt.org + +Signed-off-by: Daniel Golle <daniel@makrotopia.org> +--- + drivers/mtd/ubi/build.c | 36 ++++++++++++++++++++++++++++++++++++ + 1 file changed, 36 insertions(+) + +diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c +index 6e30a3c..999a36b 100644 +--- a/drivers/mtd/ubi/build.c ++++ b/drivers/mtd/ubi/build.c +@@ -1209,6 +1209,36 @@ static struct mtd_info * __init open_mtd_device(const char *mtd_dev) + return mtd; + } + ++/* ++ * This function tries attaching mtd partitions named either "ubi" or "data" ++ * during boot. ++ */ ++static void __init ubi_auto_attach(void) ++{ ++ int err; ++ struct mtd_info *mtd; ++ /* try attaching mtd device named "ubi" or "data" */ ++ mtd = open_mtd_device("ubi"); ++ if (IS_ERR(mtd)) ++ mtd = open_mtd_device("data"); ++ ++ if (!IS_ERR(mtd)) { ++ /* auto-add only media types where UBI makes sense */ ++ if (mtd->type == MTD_NANDFLASH || ++ mtd->type == MTD_DATAFLASH || ++ mtd->type == MTD_MLCNANDFLASH) { ++ mutex_lock(&ubi_devices_mutex); ++ ubi_msg("auto-attach mtd%d", mtd->index); ++ err = ubi_attach_mtd_dev(mtd, UBI_DEV_NUM_AUTO, 0, 0); ++ mutex_unlock(&ubi_devices_mutex); ++ if (err < 0) { ++ ubi_err("cannot attach mtd%d", mtd->index); ++ put_mtd_device(mtd); ++ } ++ } ++ } ++} ++ + static int __init ubi_init(void) + { + int err, i, k; +@@ -1298,6 +1328,12 @@ static int __init ubi_init(void) + } + } + ++ /* auto-attach mtd devices only if built-in to the kernel and no ubi.mtd ++ * parameter was given */ ++ if (config_enabled(CONFIG_MTD_ROOTFS_ROOT_DEV) && ++ !ubi_is_module() && !mtd_devs) ++ ubi_auto_attach(); ++ + err = ubiblock_init(); + if (err) { + ubi_err("block: cannot initialize, error %d", err); +-- +1.9.2 + |