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authorTejun Heo <htejun@gmail.com>2006-02-12 23:32:59 +0900
committerJeff Garzik <jgarzik@pobox.com>2006-02-12 14:36:30 -0500
commitb00eec1d58ee71131375bfeb86e64bceec3f5618 (patch)
tree03536ad3ecc61d42da0611f40a51fedcd44192b5 /include/linux/libata.h
parent6e7846e9c548443c86cfbad9e4defb4bdcfc538b (diff)
[PATCH] libata: add per-device max_sectors
If a low level driver wants to control max_sectors, it had to adjust ap->host->max_sectors and set ATA_DFLAG_LOCK_SECTORS to tell ata_scsi_slave_config not to override the limit. This is not only cumbersome but also incorrect for hosts which support more than one devices per port. This patch adds per-device ->max_sectors. If the field is unset (zero), libata core layer will adjust ->max_sectors according to default rules. If the field is set, libata honors the setting. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'include/linux/libata.h')
-rw-r--r--include/linux/libata.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 853c98859a9..afe46457124 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -122,8 +122,7 @@ enum {
/* struct ata_device stuff */
ATA_DFLAG_LBA48 = (1 << 0), /* device supports LBA48 */
ATA_DFLAG_PIO = (1 << 1), /* device currently in PIO mode */
- ATA_DFLAG_LOCK_SECTORS = (1 << 2), /* don't adjust max_sectors */
- ATA_DFLAG_LBA = (1 << 3), /* device supports LBA */
+ ATA_DFLAG_LBA = (1 << 2), /* device supports LBA */
ATA_DEV_UNKNOWN = 0, /* unknown device */
ATA_DEV_ATA = 1, /* ATA device */
@@ -348,6 +347,7 @@ struct ata_device {
unsigned int multi_count; /* sectors count for
READ/WRITE MULTIPLE */
+ unsigned int max_sectors; /* per-device max sectors */
unsigned int cdb_len;
/* for CHS addressing */