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authorAlbert Lee <albertcc@tw.ibm.com>2007-11-15 10:35:46 +0900
committerTejun Heo <htejun@gmail.com>2007-11-19 12:28:11 +0900
commit2d3b8eea7f2fbafd5d779cc92f7aedbd1ef575e9 (patch)
tree292cd6197c457defc3e07d02a663cabb3dceb253 /include
parent21bef6dd2b419f28c8096a8e30ad86dcbff44c02 (diff)
libata: workaround DRQ=1 ERR=1 for ATAPI tape drives
After an error condition, some ATAPI tape drives set DRQ=1 together with ERR=1 when asking the host to transfer the CDB of the next packet command (i.e. request sense). This patch, a revised version of Alan/Mark's previous patch, adds ATA_HORKAGE_STUCK_ERR to workaround the problem by ignoring the ERR bit and proceed sending the CDB. Signed-off-by: Albert Lee <albertcc@tw.ibm.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Mark Lord <liml@rtr.ca> Signed-off-by: Tejun Heo <htejun@gmail.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/libata.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 3f9a6a140a9..ef52a07c43d 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -340,6 +340,7 @@ enum {
ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */
ATA_HORKAGE_IPM = (1 << 7), /* Link PM problems */
ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */
+ ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */
/* DMA mask for user DMA control: User visible values; DO NOT
renumber */