ide: add ide_host_add() helper

Add ide_host_add() helper which does ide_host_alloc()+ide_host_register(),
then convert ide_setup_pci_device[s](), ide_legacy_device_add() and some
host drivers to use it.

While at it:

* Fix ide_setup_pci_device[s](), ide_arm.c, gayle.c, ide-4drives.c,
  macide.c, q40ide.c, cmd640.c and cs5520.c to return correct error value.

* -ENOENT -> -ENOMEM in rapide.c, ide-h8300.c, ide-generic.c, au1xxx-ide.c
  and pmac.c

* -ENODEV -> -ENOMEM in palm_bk3710.c, ide_platform.c and delkin_cb.c

* -1 -> -ENOMEM in ide-pnp.c

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 4 insertions, 7 deletions

diff --git a/drivers/ide/ide-generic.c b/drivers/ide/ide-generic.c
index e8818362eb4..a7082c28d06 100644
--- a/drivers/ide/ide-generic.c
+++ b/drivers/ide/ide-generic.c
@@ -28,9 +28,8 @@ MODULE_PARM_DESC(probe_mask, "probe mask for legacy ISA IDE ports");
 
 static ssize_t store_add(struct class *cls, const char *buf, size_t n)
 {
-        struct ide_host *host;
         unsigned int base, ctl;
-        int irq;
+        int irq, rc;
         hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
 
         if (sscanf(buf, "%x:%x:%d", &base, &ctl, &irq) != 3)
@@ -41,11 +40,9 @@ static ssize_t store_add(struct class *cls, const char *buf, size_t n)
         hw.irq = irq;
         hw.chipset = ide_generic;
 
-        host = ide_host_alloc(NULL, hws);
-        if (host == NULL)
-                return -ENOENT;
-
-        ide_host_register(host, NULL, hws);
+        rc = ide_host_add(NULL, hws, NULL);
+        if (rc)
+                return rc;
 
         return n;
 };