kernel: delete Linux 5.4 config and patches

[openwrt/openwrt.git] / target / linux / generic / pending-5.4 / 490-ubi-auto-attach-mtd-device-named-ubi-or-data-on-boot.patch

diff --git a/target/linux/generic/pending-5.4/490-ubi-auto-attach-mtd-device-named-ubi-or-data-on-boot.patch b/target/linux/generic/pending-5.4/490-ubi-auto-attach-mtd-device-named-ubi-or-data-on-boot.patch
deleted file mode 100644 (file)
index b21daea..0000000
--- a/target/linux/generic/pending-5.4/490-ubi-auto-attach-mtd-device-named-ubi-or-data-on-boot.patch
+++ /dev/null
@@ -1,97 +0,0 @@
-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
-@@ -1168,6 +1168,73 @@ 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;
-+      loff_t offset = 0;
-+      size_t len;
-+      char magic[4];
-+
-+      /* 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))
-+              return;
-+
-+      /* get the first not bad block */
-+      if (mtd_can_have_bb(mtd))
-+              while (mtd_block_isbad(mtd, offset)) {
-+                      offset += mtd->erasesize;
-+
-+                      if (offset > mtd->size) {
-+                              pr_err("UBI error: Failed to find a non-bad "
-+                                     "block on mtd%d\n", mtd->index);
-+                              goto cleanup;
-+                      }
-+              }
-+
-+      /* check if the read from flash was successful */
-+      err = mtd_read(mtd, offset, 4, &len, (void *) magic);
-+      if ((err && !mtd_is_bitflip(err)) || len != 4) {
-+              pr_err("UBI error: unable to read from mtd%d\n", mtd->index);
-+              goto cleanup;
-+      }
-+
-+      /* check for a valid ubi magic */
-+      if (strncmp(magic, "UBI#", 4)) {
-+              pr_err("UBI error: no valid UBI magic found inside mtd%d\n", mtd->index);
-+              goto cleanup;
-+      }
-+
-+      /* don't auto-add media types where UBI doesn't makes sense */
-+      if (mtd->type != MTD_NANDFLASH &&
-+          mtd->type != MTD_NORFLASH &&
-+          mtd->type != MTD_DATAFLASH &&
-+          mtd->type != MTD_MLCNANDFLASH)
-+              goto cleanup;
-+
-+      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\n", mtd->index);
-+              goto cleanup;
-+      }
-+
-+      return;
-+
-+cleanup:
-+      put_mtd_device(mtd);
-+}
-+
- static int __init ubi_init(void)
- {
-       int err, i, k;
-@@ -1251,6 +1318,12 @@ 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\n", err);