ide: add ide_for_each_present_dev() iterator

* Add ide_for_each_present_dev() iterator and convert IDE code to use it.

* Do some drive-by CodingStyle fixups in ide-acpi.c while at it.

There should be no functional changes caused by this patch.

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

1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/ide.h b/include/linux/ide.h
index e7b787de5286..7ed395b4b891 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1609,6 +1609,10 @@ static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
 #define ide_port_for_each_dev(i, dev, port) \
         for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
 
+#define ide_port_for_each_present_dev(i, dev, port) \
+        for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
+                if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
+
 #define ide_host_for_each_port(i, port, host) \
         for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)