[PATCH] libata: ahci: remove ata_port_start/stop() calls

This patch removes unnecessary ata_port_start/stop() calls from
ahci_port_start/stop().

Signed-off-by: Tejun Heo <htejun@gmail.com>

1 files changed, 4 insertions, 18 deletions

diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index 9a547ca9c86..c5623694d10 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -304,26 +304,19 @@ static int ahci_port_start(struct ata_port *ap)
         struct device *dev = ap->host_set->dev;
         struct ahci_host_priv *hpriv = ap->host_set->private_data;
         struct ahci_port_priv *pp;
-        int rc;
         void *mem, *mmio = ap->host_set->mmio_base;
         void *port_mmio = ahci_port_base(mmio, ap->port_no);
         dma_addr_t mem_dma;
 
-        rc = ata_port_start(ap);
-        if (rc)
-                return rc;
-
         pp = kmalloc(sizeof(*pp), GFP_KERNEL);
-        if (!pp) {
-                rc = -ENOMEM;
-                goto err_out;
-        }
+        if (!pp)
+                return -ENOMEM;
         memset(pp, 0, sizeof(*pp));
 
         mem = dma_alloc_coherent(dev, AHCI_PORT_PRIV_DMA_SZ, &mem_dma, GFP_KERNEL);
         if (!mem) {
-                rc = -ENOMEM;
-                goto err_out_kfree;
+                kfree(pp);
+                return -ENOMEM;
         }
         memset(mem, 0, AHCI_PORT_PRIV_DMA_SZ);
 
@@ -373,12 +366,6 @@ static int ahci_port_start(struct ata_port *ap)
         readl(port_mmio + PORT_CMD); /* flush */
 
         return 0;
-
-err_out_kfree:
-        kfree(pp);
-err_out:
-        ata_port_stop(ap);
-        return rc;
 }
 
 
@@ -404,7 +391,6 @@ static void ahci_port_stop(struct ata_port *ap)
         dma_free_coherent(dev, AHCI_PORT_PRIV_DMA_SZ,
                           pp->cmd_slot, pp->cmd_slot_dma);
         kfree(pp);
-        ata_port_stop(ap);
 }
 
 static u32 ahci_scr_read (struct ata_port *ap, unsigned int sc_reg_in)