Re: [PATCH 4/6] libata: Add ata_host_flags

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Brian King wrote:
Since SATA devices attached to SAS HBAs will not have
a host_set, add a helper function to retrieve the host_set
flags which can check for the existence of a host_set.

Signed-off-by: Brian King <brking@xxxxxxxxxx>
---

 libata-dev-bjking1/drivers/scsi/libata-core.c |    7 +++----
 libata-dev-bjking1/include/linux/libata.h     |    7 +++++++
 2 files changed, 10 insertions(+), 4 deletions(-)

diff -puN drivers/scsi/libata-core.c~libata_sas_no_simplex drivers/scsi/libata-core.c
--- libata-dev/drivers/scsi/libata-core.c~libata_sas_no_simplex	2006-06-06 08:55:43.000000000 -0500
+++ libata-dev-bjking1/drivers/scsi/libata-core.c	2006-06-06 08:55:43.000000000 -0500
@@ -2161,7 +2161,7 @@ int ata_set_mode(struct ata_port *ap, st
 	/* Record simplex status. If we selected DMA then the other
 	 * host channels are not permitted to do so.
 	 */
-	if (used_dma && (ap->host_set->flags & ATA_HOST_SIMPLEX))
+	if (used_dma && (ata_host_flags(ap) & ATA_HOST_SIMPLEX))

I'm not sure I like this one. Will have to think a bit more on this -- there might be a need for ipr to carry some cross-port libata state.

	Jeff


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