Re: Fwd: Mounting MMC card

From: Midhun Agnihotram
Date: Fri Jun 29 2007 - 06:58:12 EST


Hi,

> Both of them show no sign of MMC.
>

Then you cannot mount them. What output did you see in dmesg when you inserted
the card?


The dmesg contains only the following when I remove and insert the card.

<6>imx-mmc imx-mmc.0: card removed
<6>imx-mmc imx-mmc.0: card inserted


Also I was looking through the code. I found this function for init
of mmc_blk (linux/drivers/mmc/mmc_block.c)


static int __init mmc_blk_init(void)
{
int res = -ENOMEM;

res = register_blkdev(major, "mmc");
if (res < 0) {
printk(KERN_WARNING "Unable to get major %d for MMC media: %d\n",
major, res);
goto out;
}
if (major == 0)
major = res;

devfs_mk_dir("mmc");
return mmc_register_driver(&mmc_driver);

out:
return res;
}

This uses the function devfs_mk_dir() - defined in
linux/fs/devfs/base.c. I don't have devfs enabled in my kernel (kernel
version 2.6.16. In fact I don't even get an option to enable it in
menuconfig.). Can this be the cause of the problem?? I have found the
same code in the original kernel version too (the one from
kernel.org).

Thanks,
Midhun.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/