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| author | Miquel van Smoorenburg <mikevs@xs4all.net> | 2008-11-05 00:09:12 +0100 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-11-15 11:10:14 -0600 |
| commit | df81d2371aeca0f7474f197a3090830899016e39 (patch) | |
| tree | 5a78d77e9086b52069789d1f0707cf9d9cb4b71e | |
| parent | 939c2288c35132fe340b2694c7d02cacf7593723 (diff) | |
| download | linux-df81d2371aeca0f7474f197a3090830899016e39.tar.gz linux-df81d2371aeca0f7474f197a3090830899016e39.tar.bz2 linux-df81d2371aeca0f7474f197a3090830899016e39.zip | |
[SCSI] dpt_i2o: fix transferred data length for scsi_set_resid()
dpt_i2o.c::adpt_i2o_to_scsi() reads the value at (reply+5) which
should contain the length in bytes of the transferred data. This
would be correct if reply was a u32 *. However it is a void * here,
so we need to read the value at (reply+20) instead.
The value at (reply+5) is usually 0xff0000, which is apparently
'large enough' and didn't cause any trouble until 2.6.27 where
commit 427e59f09fdba387547106de7bab980b7fff77be
Author: James Bottomley <James.Bottomley@HansenPartnership.com>
Date: Sat Mar 8 18:24:17 2008 -0600
[SCSI] make use of the residue value
caused this to become visible through e.g. iostat -x .
Signed-off-by: Miquel van Smoorenburg <mikevs@xs4all.net>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| -rw-r--r-- | drivers/scsi/dpt_i2o.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c index 8aba4fdfb522..6194ed5d02c4 100644 --- a/drivers/scsi/dpt_i2o.c +++ b/drivers/scsi/dpt_i2o.c @@ -2445,7 +2445,7 @@ static s32 adpt_i2o_to_scsi(void __iomem *reply, struct scsi_cmnd* cmd) hba_status = detailed_status >> 8; // calculate resid for sg - scsi_set_resid(cmd, scsi_bufflen(cmd) - readl(reply+5)); + scsi_set_resid(cmd, scsi_bufflen(cmd) - readl(reply+20)); pHba = (adpt_hba*) cmd->device->host->hostdata[0]; @@ -2456,7 +2456,7 @@ static s32 adpt_i2o_to_scsi(void __iomem *reply, struct scsi_cmnd* cmd) case I2O_SCSI_DSC_SUCCESS: cmd->result = (DID_OK << 16); // handle underflow - if(readl(reply+5) < cmd->underflow ) { + if (readl(reply+20) < cmd->underflow) { cmd->result = (DID_ERROR <<16); printk(KERN_WARNING"%s: SCSI CMD underflow\n",pHba->name); } |