* squashfs: issue mounting with dma enabled
@ 2018-05-27 18:58 Angelo Dureghello
0 siblings, 0 replies; only message in thread
From: Angelo Dureghello @ 2018-05-27 18:58 UTC (permalink / raw)
To: linux-mtd
Dear all,
i am testing a new dma driver, named mcf-edma, for the
ColdFire mcf5441x family of SoC's. The driver is still
by the way under approval on dmaengine mailing list.
https://www.spinics.net/lists/dmaengine/msg15416.html
Mainly, i am testing it with fsl-dspi.c, reading by an
spi-nor flash.
With DMA enabled, mounting a simple 200KB squashfs i get:
/ # mount /dev/mtdblock2 squashfs
[ 1186.310000] SQUASHFS error: squashfs_read_data failed to read block 0x42e7d
[ 1186.310000] SQUASHFS error: Unable to read metadata cache entry [42e7d]
[ 1186.320000] SQUASHFS error: Unable to read inode 0x17dc
mount: mounting /dev/mtdblock2 on squashfs failed: Input/output error
>From some traces,
spi frame lengths seems fixed to 517, and the read length is always 517.
While, with same setup (DMA enabled) if i read a predefined pattern
by "hexdump -C -n4096 /dev/mtdblock2" i read perfectly the written
pattern.
Every help is appreciated,
Regards,
Angelo Dureghello
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