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authorJohn Crispin <john@openwrt.org>2014-12-03 16:05:06 +0000
committerJohn Crispin <john@openwrt.org>2014-12-03 16:05:06 +0000
commita21c9fd655ee6e5cc6efec2dca9b734f0be8c587 (patch)
treeb5ea253073e3c51136d8e89bd5e66e6da65ed656 /target/linux/generic/patches-3.18/490-ubi-auto-attach-mtd-device-named-ubi-or-data-on-boot.patch
parenta10a204aab26ccec266cd09fa94110a61293fdd9 (diff)
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kernel: make the ubi attach patch check for a valid ubi magic rather than a tar magic
Signed-off-by: John Crispin <blogic@openwrt.org> SVN-Revision: 43507
Diffstat (limited to 'target/linux/generic/patches-3.18/490-ubi-auto-attach-mtd-device-named-ubi-or-data-on-boot.patch')
-rw-r--r--target/linux/generic/patches-3.18/490-ubi-auto-attach-mtd-device-named-ubi-or-data-on-boot.patch15
1 files changed, 8 insertions, 7 deletions
diff --git a/target/linux/generic/patches-3.18/490-ubi-auto-attach-mtd-device-named-ubi-or-data-on-boot.patch b/target/linux/generic/patches-3.18/490-ubi-auto-attach-mtd-device-named-ubi-or-data-on-boot.patch
index 2b72665853..f97a442cb1 100644
--- a/target/linux/generic/patches-3.18/490-ubi-auto-attach-mtd-device-named-ubi-or-data-on-boot.patch
+++ b/target/linux/generic/patches-3.18/490-ubi-auto-attach-mtd-device-named-ubi-or-data-on-boot.patch
@@ -11,7 +11,7 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
-@@ -1209,6 +1209,47 @@
+@@ -1209,6 +1209,48 @@
return mtd;
}
@@ -23,6 +23,7 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+{
+ int err;
+ struct mtd_info *mtd;
++
+ /* try attaching mtd device named "ubi" or "data" */
+ mtd = open_mtd_device("ubi");
+ if (IS_ERR(mtd))
@@ -30,12 +31,12 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+
+ if (!IS_ERR(mtd)) {
+ size_t len;
-+ char magic[6];
++ char magic[4];
+
-+ /* check for a tar file magic */
-+ err = mtd_read(mtd, 261, 6, &len, (void *) magic);
-+ if (!err && len == 6 && !strncmp(magic, "ustar", 5)) {
-+ ubi_err("cannot attach mtd%d as there is a valid tar magic", mtd->index);
++ /* check for a valid ubi magic */
++ err = mtd_read(mtd, 0, 4, &len, (void *) magic);
++ if (!err && len == 4 && strncmp(magic, "UBI#", 4)) {
++ ubi_err("no valid UBI magic found inside mtd%d", mtd->index);
+ put_mtd_device(mtd);
+ return;
+ }
@@ -59,7 +60,7 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
static int __init ubi_init(void)
{
int err, i, k;
-@@ -1298,6 +1339,12 @@
+@@ -1298,6 +1340,12 @@
}
}