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authorTejun Heo <tj@kernel.org>2010-05-10 21:41:35 +0200
committerJeff Garzik <jgarzik@redhat.com>2010-05-19 13:34:10 -0400
commit270390e1ae1818b111543b8bfffa08095d73c1a5 (patch)
treebe6145d1a3ea7d2e80f303a62c5f9ba5a753c0f5 /drivers/ata
parentc7087652e1890a3feef35b30ee1d4be68e1932cd (diff)
downloadlinux-2.6.34-ux500-270390e1ae1818b111543b8bfffa08095d73c1a5.tar.gz
libata-sff: introduce ata_sff_init/exit() and ata_sff_port_init()
In preparation of proper SFF/BMDMA separation, introduce ata_sff_init/exit() and ata_sff_port_init(). These functions currently don't do anything. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/libata-core.c23
-rw-r--r--drivers/ata/libata-sff.c23
-rw-r--r--drivers/ata/libata.h10
3 files changed, 50 insertions, 6 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index cc49a0d3089..200f49d0922 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -5670,6 +5670,8 @@ struct ata_port *ata_port_alloc(struct ata_host *host)
ap->stats.unhandled_irq = 1;
ap->stats.idle_irq = 1;
#endif
+ ata_sff_port_init(ap);
+
return ap;
}
@@ -6584,6 +6586,8 @@ static void __init ata_parse_force_param(void)
static int __init ata_init(void)
{
+ int rc = -ENOMEM;
+
ata_parse_force_param();
/*
@@ -6595,24 +6599,31 @@ static int __init ata_init(void)
*/
ata_wq = create_workqueue("ata");
if (!ata_wq)
- goto free_force_tbl;
+ goto fail;
ata_aux_wq = create_singlethread_workqueue("ata_aux");
if (!ata_aux_wq)
- goto free_wq;
+ goto fail;
+
+ rc = ata_sff_init();
+ if (rc)
+ goto fail;
printk(KERN_DEBUG "libata version " DRV_VERSION " loaded.\n");
return 0;
-free_wq:
- destroy_workqueue(ata_wq);
-free_force_tbl:
+fail:
kfree(ata_force_tbl);
- return -ENOMEM;
+ if (ata_wq)
+ destroy_workqueue(ata_wq);
+ if (ata_aux_wq)
+ destroy_workqueue(ata_aux_wq);
+ return rc;
}
static void __exit ata_exit(void)
{
+ ata_sff_exit();
kfree(ata_force_tbl);
destroy_workqueue(ata_wq);
destroy_workqueue(ata_aux_wq);
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index f1c99a3e8b2..4a3d1f21445 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -3061,3 +3061,26 @@ void ata_pci_bmdma_init(struct ata_host *host)
EXPORT_SYMBOL_GPL(ata_pci_bmdma_init);
#endif /* CONFIG_PCI */
+
+/**
+ * ata_sff_port_init - Initialize SFF/BMDMA ATA port
+ * @ap: Port to initialize
+ *
+ * Called on port allocation to initialize SFF/BMDMA specific
+ * fields.
+ *
+ * LOCKING:
+ * None.
+ */
+void ata_sff_port_init(struct ata_port *ap)
+{
+}
+
+int __init ata_sff_init(void)
+{
+ return 0;
+}
+
+void __exit ata_sff_exit(void)
+{
+}
diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h
index 132da80aa23..d89502f3123 100644
--- a/drivers/ata/libata.h
+++ b/drivers/ata/libata.h
@@ -203,6 +203,16 @@ static inline int sata_pmp_attach(struct ata_device *dev)
/* libata-sff.c */
#ifdef CONFIG_ATA_SFF
extern void ata_pio_task(struct work_struct *work);
+extern void ata_sff_port_init(struct ata_port *ap);
+extern int ata_sff_init(void);
+extern void ata_sff_exit(void);
+#else /* CONFIG_ATA_SFF */
+static inline void ata_sff_port_init(struct ata_port *ap)
+{ }
+static inline int ata_sff_init(void)
+{ return 0; }
+static inline void ata_sff_exit(void)
+{ }
#endif /* CONFIG_ATA_SFF */
#endif /* __LIBATA_H__ */