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authorJames Bottomley <James.Bottomley@steeleye.com>2007-07-20 14:11:44 -0400
committerJames Bottomley <jejb@mulgrave.localdomain>2007-07-20 16:52:08 -0400
commit110dd8f19df534b5e464bd1d8f491195a7e62a26 (patch)
tree4c6b1875b4ed081feb898ff62206a1c140df8bea /drivers/scsi/libsas/sas_ata.c
parentfbc9a5727401442f6972bbddaeb0650f2bf2ebe2 (diff)
[SCSI] libsas: fix scr_read/write users and update the libata documentation
This fixes up the usage in libsas (which are easy to miss, since they're only in the scsi-misc tree) ... and also corrects the documentation on the point of what these two function pointers actually return. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/libsas/sas_ata.c')
-rw-r--r--drivers/scsi/libsas/sas_ata.c24
1 files changed, 16 insertions, 8 deletions
diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index 2db258996751..359391f5735f 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -172,7 +172,7 @@ static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc)
172 qc->tf.nsect = 0; 172 qc->tf.nsect = 0;
173 } 173 }
174 174
175 ata_tf_to_fis(&qc->tf, (u8*)&task->ata_task.fis, 0); 175 ata_tf_to_fis(&qc->tf, 1, 0, (u8*)&task->ata_task.fis);
176 task->uldd_task = qc; 176 task->uldd_task = qc;
177 if (is_atapi_taskfile(&qc->tf)) { 177 if (is_atapi_taskfile(&qc->tf)) {
178 memcpy(task->ata_task.atapi_packet, qc->cdb, qc->dev->cdb_len); 178 memcpy(task->ata_task.atapi_packet, qc->cdb, qc->dev->cdb_len);
@@ -298,7 +298,7 @@ static void sas_ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
298 memcpy(tf, &dev->sata_dev.tf, sizeof (*tf)); 298 memcpy(tf, &dev->sata_dev.tf, sizeof (*tf));
299} 299}
300 300
301static void sas_ata_scr_write(struct ata_port *ap, unsigned int sc_reg_in, 301static int sas_ata_scr_write(struct ata_port *ap, unsigned int sc_reg_in,
302 u32 val) 302 u32 val)
303{ 303{
304 struct domain_device *dev = ap->private_data; 304 struct domain_device *dev = ap->private_data;
@@ -317,25 +317,33 @@ static void sas_ata_scr_write(struct ata_port *ap, unsigned int sc_reg_in,
317 case SCR_ACTIVE: 317 case SCR_ACTIVE:
318 dev->sata_dev.ap->sactive = val; 318 dev->sata_dev.ap->sactive = val;
319 break; 319 break;
320 default:
321 return -EINVAL;
320 } 322 }
323 return 0;
321} 324}
322 325
323static u32 sas_ata_scr_read(struct ata_port *ap, unsigned int sc_reg_in) 326static int sas_ata_scr_read(struct ata_port *ap, unsigned int sc_reg_in,
327 u32 *val)
324{ 328{
325 struct domain_device *dev = ap->private_data; 329 struct domain_device *dev = ap->private_data;
326 330
327 SAS_DPRINTK("STUB %s\n", __FUNCTION__); 331 SAS_DPRINTK("STUB %s\n", __FUNCTION__);
328 switch (sc_reg_in) { 332 switch (sc_reg_in) {
329 case SCR_STATUS: 333 case SCR_STATUS:
330 return dev->sata_dev.sstatus; 334 *val = dev->sata_dev.sstatus;
335 return 0;
331 case SCR_CONTROL: 336 case SCR_CONTROL:
332 return dev->sata_dev.scontrol; 337 *val = dev->sata_dev.scontrol;
338 return 0;
333 case SCR_ERROR: 339 case SCR_ERROR:
334 return dev->sata_dev.serror; 340 *val = dev->sata_dev.serror;
341 return 0;
335 case SCR_ACTIVE: 342 case SCR_ACTIVE:
336 return dev->sata_dev.ap->sactive; 343 *val = dev->sata_dev.ap->sactive;
344 return 0;
337 default: 345 default:
338 return 0xffffffffU; 346 return -EINVAL;
339 } 347 }
340} 348}
341 349