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be6753dda0
Manually rebuild pending patches: - 103-kbuild-export-SUBARCH.patch - 141-jffs2-add-RENAME_EXCHANGE-support.patch - 200-ARM-9404-1-arm32-fix-boot-hang-with-HAVE_LD_DEAD_COD.patch - 203-kallsyms_uncompressed.patch - 270-platform-mikrotik-build-bits.patch - 308-mips32r2_tune.patch - 330-MIPS-kexec-Accept-command-line-parameters-from-users.patch - 402-mtd-spi-nor-write-support-for-minor-aligned-partitions.patch - 451-block-partitions-populate-fwnode.patch - 476-mtd-spi-nor-add-eon-en25q128.patch - 477-mtd-spi-nor-add-eon-en25qx128a.patch - 479-mtd-spi-nor-add-xtx-xt25f128b.patch - 481-mtd-spi-nor-add-support-for-Gigadevice-GD25D05.patch - 482-mtd-spi-nor-add-gd25q512.patch - 484-mtd-spi-nor-add-esmt-f25l16pa.patch - 485-mtd-spi-nor-add-xmc-xm25qh128c.patch - 488-mtd-spi-nor-add-xmc-xm25qh64c.patch - 490-ubi-auto-attach-mtd-device-named-ubi-or-data-on-boot.patch - 497-mtd-mtdconcat-add-dt-driver-for-concat-devices.patch - 498-mtd-spi-nor-locking-support-for-MX25L6405D.patch - 510-block-add-uImage.FIT-subimage-block-driver.patch - 530-jffs2_make_lzma_available.patch - 630-packet_socket_type.patch - 666-Add-support-for-MAP-E-FMRs-mesh-mode.patch - 681-net-remove-NETIF_F_GSO_FRAGLIST-from-NETIF_F_GSO_SOF.patch - 700-netfilter-nft_flow_offload-handle-netdevice-events-f.patch - 702-net-ethernet-mtk_eth_soc-enable-threaded-NAPI.patch - 706-net-phy-populate-host_interfaces-when-attaching-PHY.patch - 711-03-net-dsa-qca8k-add-support-for-port_change_master.patch - 734-net-ethernet-mediatek-enlarge-DMA-reserve-buffer.patch - 736-03-net-ethernet-mtk_eth_soc-improve-keeping-track-of-of.patch - 737-net-ethernet-mtk_eth_soc-add-paths-and-SerDes-modes-.patch - 739-03-net-pcs-pcs-mtk-lynxi-add-platform-driver-for-MT7988.patch - 801-gpio-gpio-cascade-add-generic-GPIO-cascade.patch - 809-01-nvmem-core-generalize-mac-base-cells-handling.patch - 811-pci_disable_usb_common_quirks.patch - 834-ledtrig-libata.patch - 892-leds-Add-LED1202-I2C-driver.patch - 920-mangle_bootargs.patch Co-authored-by: Aditya Nugraha <vortexilation@gmail.com> Signed-off-by: Mieczyslaw Nalewaj <namiltd@yahoo.com> [ improve commit title + minor fixes ] Link: https://github.com/openwrt/openwrt/pull/16547 Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
105 lines
2.6 KiB
Diff
105 lines
2.6 KiB
Diff
From: Daniel Golle <daniel@makrotopia.org>
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Subject: ubi: auto-attach mtd device named "ubi" or "data" on boot
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Signed-off-by: Daniel Golle <daniel@makrotopia.org>
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---
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drivers/mtd/ubi/build.c | 36 ++++++++++++++++++++++++++++++++++++
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1 file changed, 36 insertions(+)
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--- a/drivers/mtd/ubi/build.c
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+++ b/drivers/mtd/ubi/build.c
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@@ -1263,6 +1263,80 @@ static struct mtd_notifier ubi_mtd_notif
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.remove = ubi_notify_remove,
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};
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+
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+/*
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+ * This function tries attaching mtd partitions named either "ubi" or "data"
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+ * during boot.
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+ */
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+static void __init ubi_auto_attach(void)
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+{
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+ int err;
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+ struct mtd_info *mtd;
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+ struct device_node *np;
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+ loff_t offset = 0;
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+ size_t len;
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+ char magic[4];
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+
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+ /* try attaching mtd device named "ubi" or "data" */
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+ mtd = open_mtd_device("ubi");
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+ if (IS_ERR(mtd))
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+ mtd = open_mtd_device("data");
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+
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+ if (IS_ERR(mtd))
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+ return;
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+
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+ /* skip "linux,ubi" mtd as it has already been attached */
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+ np = mtd_get_of_node(mtd);
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+ if (of_device_is_compatible(np, "linux,ubi"))
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+ goto cleanup;
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+
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+ /* get the first not bad block */
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+ if (mtd_can_have_bb(mtd))
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+ while (mtd_block_isbad(mtd, offset)) {
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+ offset += mtd->erasesize;
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+
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+ if (offset > mtd->size) {
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+ pr_err("UBI error: Failed to find a non-bad "
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+ "block on mtd%d\n", mtd->index);
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+ goto cleanup;
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+ }
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+ }
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+
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+ /* check if the read from flash was successful */
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+ err = mtd_read(mtd, offset, 4, &len, (void *) magic);
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+ if ((err && !mtd_is_bitflip(err)) || len != 4) {
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+ pr_err("UBI error: unable to read from mtd%d\n", mtd->index);
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+ goto cleanup;
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+ }
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+
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+ /* check for a valid ubi magic */
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+ if (strncmp(magic, "UBI#", 4)) {
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+ pr_err("UBI error: no valid UBI magic found inside mtd%d\n", mtd->index);
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+ goto cleanup;
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+ }
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+
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+ /* don't auto-add media types where UBI doesn't makes sense */
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+ if (mtd->type != MTD_NANDFLASH &&
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+ mtd->type != MTD_NORFLASH &&
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+ mtd->type != MTD_DATAFLASH &&
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+ mtd->type != MTD_MLCNANDFLASH)
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+ goto cleanup;
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+
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+ mutex_lock(&ubi_devices_mutex);
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+ pr_notice("UBI: auto-attach mtd%d\n", mtd->index);
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+ err = ubi_attach_mtd_dev(mtd, UBI_DEV_NUM_AUTO, 0, 0, false, false);
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+ mutex_unlock(&ubi_devices_mutex);
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+ if (err < 0) {
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+ pr_err("UBI error: cannot attach mtd%d\n", mtd->index);
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+ goto cleanup;
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+ }
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+
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+ return;
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+
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+cleanup:
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+ put_mtd_device(mtd);
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+}
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+
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static int __init ubi_init_attach(void)
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{
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int err, i, k;
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@@ -1314,6 +1388,12 @@ static int __init ubi_init_attach(void)
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}
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}
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+ /* auto-attach mtd devices only if built-in to the kernel and no ubi.mtd
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+ * parameter was given */
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+ if (IS_ENABLED(CONFIG_MTD_ROOTFS_ROOT_DEV) &&
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+ !ubi_is_module() && !mtd_devs)
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+ ubi_auto_attach();
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+
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return 0;
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out_detach:
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