diff options
| -rw-r--r-- | Documentation/scsi/scsi_mid_low_api.txt | 3 | ||||
| -rw-r--r-- | drivers/ata/pata_arasan_cf.c | 1 | ||||
| -rw-r--r-- | drivers/scsi/atp870u.c | 2 | ||||
| -rw-r--r-- | drivers/usb/storage/uas.c | 1 | ||||
| -rw-r--r-- | include/scsi/scsi_host.h | 13 |
5 files changed, 3 insertions, 17 deletions
diff --git a/Documentation/scsi/scsi_mid_low_api.txt b/Documentation/scsi/scsi_mid_low_api.txt index c1dd4939f4ae..2a4be1c3e6db 100644 --- a/Documentation/scsi/scsi_mid_low_api.txt +++ b/Documentation/scsi/scsi_mid_low_api.txt @@ -1084,7 +1084,8 @@ of interest: commands to the adapter. this_id - scsi id of host (scsi initiator) or -1 if not known sg_tablesize - maximum scatter gather elements allowed by host. - 0 implies scatter gather not supported by host + Set this to SG_ALL or less to avoid chained SG lists. + Must be at least 1. max_sectors - maximum number of sectors (usually 512 bytes) allowed in a single SCSI command. The default value of 0 leads to a setting of SCSI_DEFAULT_MAX_SECTORS (defined in diff --git a/drivers/ata/pata_arasan_cf.c b/drivers/ata/pata_arasan_cf.c index ebecab8c3f36..135173c8d138 100644 --- a/drivers/ata/pata_arasan_cf.c +++ b/drivers/ata/pata_arasan_cf.c @@ -219,7 +219,6 @@ struct arasan_cf_dev { static struct scsi_host_template arasan_cf_sht = { ATA_BASE_SHT(DRIVER_NAME), - .sg_tablesize = SG_NONE, .dma_boundary = 0xFFFFFFFFUL, }; diff --git a/drivers/scsi/atp870u.c b/drivers/scsi/atp870u.c index e41f0bbdc9fd..c6a752309dda 100644 --- a/drivers/scsi/atp870u.c +++ b/drivers/scsi/atp870u.c @@ -1680,7 +1680,7 @@ static struct scsi_host_template atp870u_template = { .bios_param = atp870u_biosparam /* biosparm */, .can_queue = qcnt /* can_queue */, .this_id = 7 /* SCSI ID */, - .sg_tablesize = ATP870U_SCATTER /*SG_ALL*/ /*SG_NONE*/, + .sg_tablesize = ATP870U_SCATTER /*SG_ALL*/, .max_sectors = ATP870U_MAX_SECTORS, }; diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index bf80d6f81f58..fd9c0d2c111f 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -879,7 +879,6 @@ static struct scsi_host_template uas_host_template = { .eh_abort_handler = uas_eh_abort_handler, .eh_device_reset_handler = uas_eh_device_reset_handler, .this_id = -1, - .sg_tablesize = SG_NONE, .skip_settle_delay = 1, .dma_boundary = PAGE_SIZE - 1, }; diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index fccdf84ec7e2..f577647bf5f2 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -23,19 +23,6 @@ struct scsi_host_cmd_pool; struct scsi_transport_template; -/* - * The various choices mean: - * NONE: Self evident. Host adapter is not capable of scatter-gather. - * ALL: Means that the host adapter module can do scatter-gather, - * and that there is no limit to the size of the table to which - * we scatter/gather data. The value we set here is the maximum - * single element sglist. To use chained sglists, the adapter - * has to set a value beyond ALL (and correctly use the chain - * handling API. - * Anything else: Indicates the maximum number of chains that can be - * used in one scatter-gather request. - */ -#define SG_NONE 0 #define SG_ALL SG_CHUNK_SIZE #define MODE_UNKNOWN 0x00 |