[SCSI] erase invalid data returned by device

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This patch (as1108) fixes a problem that can occur with certain USB
mass-storage devices: They return invalid data together with a residue
indicating that the data should be ignored.  Rather than leave the
invalid data in a transfer buffer, where it can get misinterpreted,
the patch clears the invalid portion of the buffer.

This solves a problem (wrong write-protect setting detected) reported
by Maciej Rutecki and Peter Teoh.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Peter Teoh <htmldeveloper@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

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Alan Stern 2008-06-24 14:03:14 -04:00 • committed by James Bottomley

parent b7279469d6

commit bdb2b8cab4

1 changed files with 9 additions and 0 deletions

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drivers/scsi/scsi_lib.c

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