mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-30 18:47:06 +00:00
69 lines
1.9 KiB
Diff
69 lines
1.9 KiB
Diff
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
|
|
|