[PATCH 2/2] [MTD] Call bdi_init() and bdi_register()
in [Kernel]
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From: Jörn Engel on 26 Apr 2010 12:40 Otherwise we hit a BUG_ON in bdi_queue_work(). Signed-off-by: Joern Engel <joern(a)logfs.org> --- drivers/mtd/mtdcore.c | 17 ++++++++++++++++- 1 files changed, 16 insertions(+), 1 deletions(-) diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index cb4858b..8dd3e46 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -299,7 +299,7 @@ static struct device_type mtd_devtype = { int add_mtd_device(struct mtd_info *mtd) { - int i; + int i, err; if (!mtd->backing_dev_info) { switch (mtd->type) { @@ -322,6 +322,12 @@ int add_mtd_device(struct mtd_info *mtd) if (!mtd_table[i]) { struct mtd_notifier *not; + err = bdi_register(mtd->backing_dev_info, NULL, "mtd%d", + i); + if (err) { + /* We lose the errno information :( */ + break; + } mtd_table[i] = mtd; mtd->index = i; mtd->usecount = 0; @@ -692,6 +698,15 @@ static int __init init_mtd(void) int ret; ret = class_register(&mtd_class); + ret = bdi_init(&mtd_bdi_unmappable); + if (ret) + return ret; + ret = bdi_init(&mtd_bdi_ro_mappable); + if (ret) + return ret; + ret = bdi_init(&mtd_bdi_rw_mappable); + if (ret) + return ret; if (ret) { pr_err("Error registering mtd class: %d\n", ret); return ret; -- 1.6.2.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |