Kernel hangs when trying to probe AM29LV160DB flash device

[Thayne Harbaugh]

You don't mention which kernel + patches you are using.  Lately I have
"fixed" some device probing which is in the CVS tree - although I don't
think this is related to the problem you are seeing.

On Mon, 2003-03-31 at 15:08, David Jones wrote:
> Hi,
>    I am trying to get an AM29LV160DB flash device to work with the MTD 
> drivers under uClinux.  The device is connected in a 16-bit bus
> fashion to a Motorola MC68VZ328.
> 
> The AM29LV160DB is supported by mtd/chips/jedec_probe.c
> 
> In my map file I have:
> mymtd = do_map_probe("jedec_probe", &em1vz328_map);
> 
> The do_map_probe function calls get_mtd_chip_driver in mtd/mtd/chipreg.c
> and that is where things seem to hang.  The get_mtd_chip_driver function
> never returns and hangs the kernel.
> 
> Here is a snippet of the boot messages:
> ---------------------------------------------------------
> .
> .
> EMDG em1-vz328 mapping:size 200000 at 2000000
> EMDG: MTD Debug: Calling the do_map_probe function...
> EMDG: MTD Debug: Calling get_mtd_chip_driver function...
> 
> ---------------------------------------------------------
> 
> I looked through the archives and I noticed someone else had a similar
> problem with this flash device under uClinux, but I could not find what
> the solution was.
> 
> If anyone has any ideas I would be grateful.
> 
> Thanks,
> David
> 
> 
> Kernel config:
> #
> # Memory Technology Devices (MTD)
> #
> CONFIG_MTD=y
> CONFIG_MTD_DEBUG=y
> CONFIG_MTD_DEBUG_VERBOSE=3
> CONFIG_MTD_PARTITIONS=y
> # CONFIG_MTD_CONCAT is not set
> # CONFIG_MTD_REDBOOT_PARTS is not set
> # CONFIG_MTD_CMDLINE_PARTS is not set
> 
> #
> # User Modules And Translation Layers
> #
> CONFIG_MTD_CHAR=y
> # CONFIG_MTD_BLOCK is not set
> CONFIG_MTD_BLOCK_RO=y
> # CONFIG_FTL is not set
> # CONFIG_NFTL is not set
> 
> #
> # RAM/ROM/Flash chip drivers
> #
> CONFIG_MTD_CFI=y
> CONFIG_MTD_JEDECPROBE=y
> CONFIG_MTD_GEN_PROBE=y
> CONFIG_MTD_CFI_ADV_OPTIONS=y
> CONFIG_MTD_CFI_NOSWAP=y
> # CONFIG_MTD_CFI_BE_BYTE_SWAP is not set
> # CONFIG_MTD_CFI_LE_BYTE_SWAP is not set
> CONFIG_MTD_CFI_GEOMETRY=y
> # CONFIG_MTD_CFI_B1 is not set
> CONFIG_MTD_CFI_B2=y
> # CONFIG_MTD_CFI_B4 is not set
> CONFIG_MTD_CFI_I1=y
> # CONFIG_MTD_CFI_I2 is not set
> # CONFIG_MTD_CFI_I4 is not set
> # CONFIG_MTD_CFI_INTELEXT is not set
> # CONFIG_MTD_CFI_AMDSTD is not set
> CONFIG_MTD_RAM=y
> # CONFIG_MTD_ROM is not set
> # CONFIG_MTD_ABSENT is not set
> # CONFIG_MTD_OBSOLETE_CHIPS is not set
-- 
Thayne Harbaugh
Linux Networx
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