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authorTejun Heo <tj@kernel.org>2008-08-29 10:13:12 -0400
committerJeff Garzik <jgarzik@redhat.com>2008-09-08 12:15:35 -0400
commit2fd673ecf0378ddeeeb87b3605e50212e0c0ddc6 (patch)
tree92cbd1a87d3ba82d52494ca204fe34d09aa4c79a /drivers/ata/sata_nv.c
parent17248461cb66103b87ff03bdee34aa61035cc93e (diff)
sata_nv: disable hardreset for generic
of them being unifying probing, hotplug and EH reset paths uniform. Previously, broken hardreset could go unnoticed as it wasn't used during probing but when something goes wrong or after hotplug the problem will surface and bite hard. OSDL bug 11195 reports that sata_nv generic flavor falls into this category. Hardreset itself succeeds but PHY stays offline after hardreset. I tried longer debounce timing but the result was the same. http://bugzilla.kernel.org/show_bug.cgi?id=11195 So, it seems we'll have to drop hardreset from the generic flavor. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Peer Chen <pchen@nvidia.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/sata_nv.c')
-rw-r--r--drivers/ata/sata_nv.c19
1 files changed, 1 insertions, 18 deletions
diff --git a/drivers/ata/sata_nv.c b/drivers/ata/sata_nv.c
index 858f70610eda..1e1f3f3757ae 100644
--- a/drivers/ata/sata_nv.c
+++ b/drivers/ata/sata_nv.c
@@ -309,8 +309,6 @@ static void nv_nf2_freeze(struct ata_port *ap);
309static void nv_nf2_thaw(struct ata_port *ap); 309static void nv_nf2_thaw(struct ata_port *ap);
310static void nv_ck804_freeze(struct ata_port *ap); 310static void nv_ck804_freeze(struct ata_port *ap);
311static void nv_ck804_thaw(struct ata_port *ap); 311static void nv_ck804_thaw(struct ata_port *ap);
312static int nv_hardreset(struct ata_link *link, unsigned int *class,
313 unsigned long deadline);
314static int nv_adma_slave_config(struct scsi_device *sdev); 312static int nv_adma_slave_config(struct scsi_device *sdev);
315static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc); 313static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc);
316static void nv_adma_qc_prep(struct ata_queued_cmd *qc); 314static void nv_adma_qc_prep(struct ata_queued_cmd *qc);
@@ -407,7 +405,7 @@ static struct scsi_host_template nv_swncq_sht = {
407 405
408static struct ata_port_operations nv_generic_ops = { 406static struct ata_port_operations nv_generic_ops = {
409 .inherits = &ata_bmdma_port_ops, 407 .inherits = &ata_bmdma_port_ops,
410 .hardreset = nv_hardreset, 408 .hardreset = ATA_OP_NULL,
411 .scr_read = nv_scr_read, 409 .scr_read = nv_scr_read,
412 .scr_write = nv_scr_write, 410 .scr_write = nv_scr_write,
413}; 411};
@@ -1588,21 +1586,6 @@ static void nv_mcp55_thaw(struct ata_port *ap)
1588 ata_sff_thaw(ap); 1586 ata_sff_thaw(ap);
1589} 1587}
1590 1588
1591static int nv_hardreset(struct ata_link *link, unsigned int *class,
1592 unsigned long deadline)
1593{
1594 int rc;
1595
1596 /* SATA hardreset fails to retrieve proper device signature on
1597 * some controllers. Request follow up SRST. For more info,
1598 * see http://bugzilla.kernel.org/show_bug.cgi?id=3352
1599 */
1600 rc = sata_sff_hardreset(link, class, deadline);
1601 if (rc)
1602 return rc;
1603 return -EAGAIN;
1604}
1605
1606static void nv_adma_error_handler(struct ata_port *ap) 1589static void nv_adma_error_handler(struct ata_port *ap)
1607{ 1590{
1608 struct nv_adma_port_priv *pp = ap->private_data; 1591 struct nv_adma_port_priv *pp = ap->private_data;