ide: define MAX_HWIFS in <linux/ide.h>

* Now that ide_hwif_t instances are allocated dynamically
  the difference between MAX_HWIFS == 2 and MAX_HWIFS == 10
  is ~100 bytes (x86-32) so use MAX_HWIFS == 10 on all archs
  except these ones that use MAX_HWIFS == 1.

* Define MAX_HWIFS in <linux/ide.h> instead of <asm/ide.h>.

[ Please note that avr32/cris/v850 have no <asm/ide.h>
  and alpha/ia64/sh always define CONFIG_IDE_MAX_HWIFS. ]

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

1 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/ide.h b/include/linux/ide.h
index dbd0aeb3a56d..76fe00b24b51 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -213,6 +213,14 @@ static inline int __ide_default_irq(unsigned long base)
 
 #include <asm/ide.h>
 
+#ifndef MAX_HWIFS
+#if defined(CONFIG_BLACKFIN) || defined(CONFIG_H8300) || defined(CONFIG_XTENSA)
+# define MAX_HWIFS      1
+#else
+# define MAX_HWIFS      10
+#endif
+#endif
+
 #if !defined(MAX_HWIFS) || defined(CONFIG_EMBEDDED)
 #undef MAX_HWIFS
 #define MAX_HWIFS       CONFIG_IDE_MAX_HWIFS