mirror of
git://git.openwrt.org/openwrt/openwrt.git
synced 2025-10-30 21:44:27 -04:00
74d00a8c38
* properly format/comment all patches * merge debloat patches * merge Kconfig patches * merge swconfig patches * merge hotplug patches * drop 200-fix_localversion.patch - upstream * drop 222-arm_zimage_none.patch - unused * drop 252-mv_cesa_depends.patch - no longer required * drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused * drop 661-fq_codel_keep_dropped_stats.patch - outdated * drop 702-phy_add_aneg_done_function.patch - upstream * drop 840-rtc7301.patch - unused * drop 841-rtc_pt7c4338.patch - upstream * drop 921-use_preinit_as_init.patch - unused * drop spio-gpio-old and gpio-mmc - unused Signed-off-by: John Crispin <john@phrozen.org>
74 lines
2.0 KiB
Diff
74 lines
2.0 KiB
Diff
From: Daniel Golle <daniel@makrotopia.org>
|
|
Subject: ubi: auto-attach mtd device named "ubi" or "data" on boot
|
|
|
|
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
|
|
---
|
|
drivers/mtd/ubi/build.c | 36 ++++++++++++++++++++++++++++++++++++
|
|
1 file changed, 36 insertions(+)
|
|
|
|
--- a/drivers/mtd/ubi/build.c
|
|
+++ b/drivers/mtd/ubi/build.c
|
|
@@ -1212,6 +1212,49 @@ static struct mtd_info * __init open_mtd
|
|
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)) {
|
|
+ size_t len;
|
|
+ char magic[4];
|
|
+
|
|
+ /* check for a valid ubi magic */
|
|
+ err = mtd_read(mtd, 0, 4, &len, (void *) magic);
|
|
+ if (!err && len == 4 && strncmp(magic, "UBI#", 4)) {
|
|
+ pr_err("UBI error: no valid UBI magic found inside mtd%d", mtd->index);
|
|
+ put_mtd_device(mtd);
|
|
+ return;
|
|
+ }
|
|
+
|
|
+ /* auto-add only media types where UBI makes sense */
|
|
+ if (mtd->type == MTD_NANDFLASH ||
|
|
+ mtd->type == MTD_NORFLASH ||
|
|
+ mtd->type == MTD_DATAFLASH ||
|
|
+ mtd->type == MTD_MLCNANDFLASH) {
|
|
+ mutex_lock(&ubi_devices_mutex);
|
|
+ pr_notice("UBI: auto-attach mtd%d\n", mtd->index);
|
|
+ err = ubi_attach_mtd_dev(mtd, UBI_DEV_NUM_AUTO, 0, 0);
|
|
+ mutex_unlock(&ubi_devices_mutex);
|
|
+ if (err < 0) {
|
|
+ pr_err("UBI error: cannot attach mtd%d", mtd->index);
|
|
+ put_mtd_device(mtd);
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+}
|
|
+
|
|
static int __init ubi_init(void)
|
|
{
|
|
int err, i, k;
|
|
@@ -1295,6 +1338,12 @@ 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 (IS_ENABLED(CONFIG_MTD_ROOTFS_ROOT_DEV) &&
|
|
+ !ubi_is_module() && !mtd_devs)
|
|
+ ubi_auto_attach();
|
|
+
|
|
err = ubiblock_init();
|
|
if (err) {
|
|
pr_err("UBI error: block: cannot initialize, error %d", err);
|