sg driver rounds up the length in struct scatterlist to be a multiple
of 512 in some conditions. So LLDs can't use the data length in a sg
list to calculate residual. Instead, the length in struct scsi_cmnd
should be used.
Signed-off-by: FUJITA Tomonori <[EMAIL PROTECTED]>
Cc: Douglas Gilbert <[EMAIL PROTECTED]>
Cc: James Bottomley <[EMAIL PROTECTED]>
---
drivers/scsi/scsi_debug.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index d1777a9..691efd9 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -651,7 +651,7 @@ static int fill_from_dev_buffer(struct scsi_cmnd * scp,
unsigned char * arr,
if (sdb->resid)
sdb->resid -= act_len;
else
- sdb->resid = req_len - act_len;
+ sdb->resid = scsi_bufflen(scp) - act_len;
return 0;
}
--
1.5.3.7
-
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