2009-03-03 09:58:38 Kernel-panic mounting spi_mmc
Michael Heiser (GERMANY)
Message: 70292
Hey guys,
Another problem has occured while testing my uClinux-dist 2008R1.5. My MMC card is not mounting and i get following error.
root:/> mount -t vfat /dev/spi_mmc /media
New MMC/SD card found: 3843 MB(4029677568 bytes)
spi_mmc:
root:/> BUG: failure at block/elevator.c:780/elv_dequeue_request()!
Kernel panic - not syncing: BUG!
What can I do?
Regards,
Michael
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2009-03-03 20:08:47 Re: Kernel-panic mounting spi_mmc
Mike Frysinger (UNITED STATES)
Message: 70307
what hardware exactly are you using ?
run `make bugreport` and post the tarball as an attachment
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2009-03-04 01:02:39 Re: Kernel-panic mounting spi_mmc
P SENTHIL KUMAR (INDIA)
Message: 70315
Hi Mike and Michael,
I am using BF561 based custom with 2008R1.5 release.
I had accidently meet with the below issue at every first time of mounting the spi_mmc driver with msdos filesystem.
root:/sdcard> ls
barbie.mp3 flower~1.jpg flower~2.jpg jpg04.jpg jpg18.jpg // Files in sdcard, mounted using vfat filesystem
root:/sdcard> cd ..
root:/> ls
bin etc init mnt root sdcard tmp var
dev home lib proc sbin sys usr
root:/>
root:/>
root:/>
root:/>
root:/>
root:/>
root:/> umount /sdcard/
root:/> ls
bin etc init mnt root sdcard tmp var
dev home lib proc sbin sys usr
root:/> cd sdcard/
root:/sdcard> ls
root:/sdcard>
root:/sdcard>
root:/sdcard> cd ..
root:/>
root:/>
root:/>
root:/> cat /proc/spi_mmc
Driver build date: Feb 25 2009
SCLK: 10000 KHz
SPISEL2 as chip select
Driver: Blackfin PIO SPI directly
Total errors: 0
SD card :
Capacity: 252968960 B
Name: SD256€@
Rev: 4.0
Date: 2005/5
Serial: 0xe13d0c (14761228)
CSD ver.: 0
CCC supported: 5f5
Mult. block writes works: YES
last block: 1005056
users: 0
Performance for last 100 transfers
Mean read throughput: 4 kB/s
Mean write throughput: 0 kB/s
root:/>
root:/>
root:/>
root:/>
root:/> mount -t msdos /dev/spi_mmc /tmp/
root:/> BUG: failure at block/elevator.c:780/elv_dequeue_request()!
Kernel panic - not syncing: BUG!
Regards, Senthil
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2009-03-04 02:28:25 Re: Kernel-panic mounting spi_mmc
Michael Heiser (GERMANY)
Message: 70327
Hi Mike,
Here is the Bugreport of my Distro.
Regards
Michael
bugreport.tgz
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2009-03-04 02:50:02 Re: Kernel-panic mounting spi_mmc
Mike Frysinger (UNITED STATES)
Message: 70333
you guys already have a thread going. dont start a second one.