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From: Daniel Golle <daniel@makrotopia.org>
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Subject: ubi: set ROOT_DEV to ubiblock "rootfs" if unset
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Signed-off-by: Daniel Golle <daniel@makrotopia.org>
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---
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drivers/mtd/ubi/block.c | 10 ++++++++++
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1 file changed, 10 insertions(+)
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--- a/drivers/mtd/ubi/block.c
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+++ b/drivers/mtd/ubi/block.c
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@@ -50,6 +50,7 @@
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#include <linux/scatterlist.h>
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#include <linux/idr.h>
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#include <asm/div64.h>
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+#include <linux/root_dev.h>
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#include "ubi-media.h"
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#include "ubi.h"
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@@ -445,6 +446,15 @@ int ubiblock_create(struct ubi_volume_in
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dev_info(disk_to_dev(dev->gd), "created from ubi%d:%d(%s)",
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dev->ubi_num, dev->vol_id, vi->name);
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mutex_unlock(&devices_mutex);
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+
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+ if (!strcmp(vi->name, "rootfs") &&
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+ IS_ENABLED(CONFIG_MTD_ROOTFS_ROOT_DEV) &&
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+ ROOT_DEV == 0) {
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+ pr_notice("ubiblock: device ubiblock%d_%d (%s) set to be root filesystem\n",
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+ dev->ubi_num, dev->vol_id, vi->name);
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+ ROOT_DEV = MKDEV(gd->major, gd->first_minor);
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+ }
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+
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return 0;
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out_free_queue:
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