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[MTD] [NAND] fsl_elbc_nand: fix mtd name

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Currently fsl_elbc_nand doesn't initialize mtd->name, and this causes
nand_get_flash_type() to assign name that is equal to chip type, like
this:

   root@b1:~# cat /proc/mtd
   dev:    size   erasesize  name
   mtd0: 00800000 00010000 "fe000000.flash"
   mtd1: 02000000 00004000 "NAND 32MiB 3,3V 8-bit"

mtd0 is physmap_of flash (normal name), and mtd1 is fsl_elbc_nand.

Despite inconsistency, with mtd name like this specifying paritions
from the kernel command line becomes a torture (though, I didn't tried
and not sure if mtdparts= can handle spaces at all). Plus, this causes
real bugs when multiple fsl_elbc_nand chips registered.

With this patch applied fsl_elbc_nand chip will have proper name:

   root@b1:~# cat /proc/mtd
   dev:    size   erasesize  name
   mtd0: 00800000 00010000 "fe000000.flash"
   mtd1: 02000000 00004000 "e0600000.flash"

p.s. We can't use priv->dev->bus_id as in physmap_of, because
fsl_elbc_nand pretends to be a localbus controller, so its bus_id is
"address.localbus", which is incorrect and thus will also not work
for multiple chips.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
Anton Vorontsov 2008-03-18 19:34:03 +03:00 committed by David Woodhouse
parent f0797881d5
commit 9ebed3e60f
1 changed files with 8 additions and 0 deletions
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8
drivers/mtd/nand/fsl_elbc_nand.c
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@ -780,6 +780,8 @@ static int fsl_elbc_chip_remove(struct fsl_elbc_mtd *priv)
nand_release(&priv->mtd);
kfree(priv->mtd.name);
if (priv->vbase)
iounmap(priv->vbase);
@ -840,6 +842,12 @@ static int fsl_elbc_chip_probe(struct fsl_elbc_ctrl *ctrl,
goto err;
}
priv->mtd.name = kasprintf(GFP_KERNEL, "%x.flash", res.start);
if (!priv->mtd.name) {
ret = -ENOMEM;
goto err;
}
ret = fsl_elbc_chip_init(priv);
if (ret)
goto err;