ide: legacy PCI bus order probing fixes

IDE PCI host drivers should register themselves with IDE core only when
IDE driver is built-in, otherwise (IDE driver is modular and thus IDE PCI
host drivers are also modular) the code has no effect and just complicates
the probing.

Fix it by adding new config option CONFIG_IDEPCI_PCIBUS (defined only when
needed and invisible to the user) and covering by #ifdef/#endif the code
in question.  It turned out that "ide=reverse" was silently accepted but did
nothing in case when IDE driver was modular, this is fixed now.

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

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 038f2610e734..f2b547ff7722 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -172,7 +172,7 @@ static int system_bus_speed;	/* holds what we think is VESA/PCI bus speed */
 DECLARE_MUTEX(ide_cfg_sem);
  __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock);
 
-#ifdef CONFIG_BLK_DEV_IDEPCI
+#ifdef CONFIG_IDEPCI_PCIBUS_ORDER
 static int ide_scan_direction; /* THIS was formerly 2.2.x pci=reverse */
 #endif
 
@@ -1333,13 +1333,13 @@ static int __init ide_setup(char *s)
                 return 1;
         }
 
-#ifdef CONFIG_BLK_DEV_IDEPCI
+#ifdef CONFIG_IDEPCI_PCIBUS_ORDER
         if (!strcmp(s, "ide=reverse")) {
                 ide_scan_direction = 1;
                 printk(" : Enabled support for IDE inverse scan order.\n");
                 return 1;
         }
-#endif /* CONFIG_BLK_DEV_IDEPCI */
+#endif
 
 #ifdef CONFIG_BLK_DEV_IDEACPI
         if (!strcmp(s, "ide=noacpi")) {
@@ -1599,9 +1599,9 @@ extern void __init h8300_ide_init(void);
  */
 static void __init probe_for_hwifs (void)
 {
-#ifdef CONFIG_BLK_DEV_IDEPCI
+#ifdef CONFIG_IDEPCI_PCIBUS_ORDER
         ide_scan_pcibus(ide_scan_direction);
-#endif /* CONFIG_BLK_DEV_IDEPCI */
+#endif
 
 #ifdef CONFIG_ETRAX_IDE
         {