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 <fujita.tomonori@xxxxxxxxxxxxx> Cc: Douglas Gilbert <dougg@xxxxxxxxxx> Cc: James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> --- 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 - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
