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authorTejun Heo <tj@kernel.org>2010-05-10 15:41:30 -0400
committerJeff Garzik <jgarzik@redhat.com>2010-05-17 22:49:02 -0400
commit3e4ec3443f70fbe144799ccf0b1c3797f78d1715 (patch)
treecfb297e42075baacbbabfb6034e3e7c9a44c73b2 /drivers/ata/libata-scsi.c
parentc7a8209f766961eea4cfc6f22d2d6e06ef63546c (diff)
libata: kill ATA_FLAG_DISABLED
ATA_FLAG_DISABLED is only used by drivers which don't use ->error_handler framework and is largely broken. Its only meaningful function is to make irq handlers skip processing if the flag is set, which is largely useless and even harmful as it makes those ports more likely to cause IRQ storms. Kill ATA_FLAG_DISABLED and makes the callers disable attached devices instead. ata_port_probe() and ata_port_disable() which manipulate the flag are also killed. This simplifies condition check in IRQ handlers. While updating IRQ handlers, remove ap NULL check as libata guarantees consecutive port allocation (unoccupied ports are initialized with dummies) and long-obsolete ATA_QCFLAG_ACTIVE check (checked by ata_qc_from_tag()). Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/libata-scsi.c')
-rw-r--r--drivers/ata/libata-scsi.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 0088cdeb0b1e..cfa9dd3d7253 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -3345,9 +3345,6 @@ void ata_scsi_scan_host(struct ata_port *ap, int sync)
3345 struct ata_link *link; 3345 struct ata_link *link;
3346 struct ata_device *dev; 3346 struct ata_device *dev;
3347 3347
3348 if (ap->flags & ATA_FLAG_DISABLED)
3349 return;
3350
3351 repeat: 3348 repeat:
3352 ata_for_each_link(link, ap, EDGE) { 3349 ata_for_each_link(link, ap, EDGE) {
3353 ata_for_each_dev(dev, link, ENABLED) { 3350 ata_for_each_dev(dev, link, ENABLED) {