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| author | Christof Schmitt <christof.schmitt@de.ibm.com> | 2010-04-30 18:09:33 +0200 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-05-02 15:42:29 -0400 |
| commit | 683229845f1780b10041ee7a1043fc8f10061455 (patch) | |
| tree | 88f58f214666762a71d1458a72646dd65372a1a6 /drivers/s390/scsi/zfcp_aux.c | |
| parent | 883c98feaab708d0fc976225b146aa9307023c85 (diff) | |
| download | linux-683229845f1780b10041ee7a1043fc8f10061455.tar.gz linux-683229845f1780b10041ee7a1043fc8f10061455.tar.bz2 linux-683229845f1780b10041ee7a1043fc8f10061455.zip | |
[SCSI] zfcp: Report scatter-gather limits to SCSI and block layer
Instead of dealing with large segments in the scatter-gather lists in
zfcp_qdio.c, report the limits to the upper layers. With these limits
in place, the code for mapping large data blocks to multiple sbales
can be removed.
Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/s390/scsi/zfcp_aux.c')
| -rw-r--r-- | drivers/s390/scsi/zfcp_aux.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index 1e6183a86ce5..abf33db647ff 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -545,6 +545,10 @@ struct zfcp_adapter *zfcp_adapter_enqueue(struct ccw_device *ccw_device) &zfcp_sysfs_adapter_attrs)) goto failed; + /* report size limit per scatter-gather segment */ + adapter->dma_parms.max_segment_size = ZFCP_QDIO_SBALE_LEN; + adapter->ccw_device->dev.dma_parms = &adapter->dma_parms; + if (!zfcp_adapter_scsi_register(adapter)) return adapter; |