ide: do not access ide_drive_t 'drive_data' field directly

Change ide_drive_t 'drive_data' field from 'unsigned int' type to 'void *'
type, allowing a wider range of values/types to be stored in this field.

Added 'ide_get_drivedata' and 'ide_set_drivedata' helpers to get and set
the 'drive_data' field.

Fixed all host drivers to maintain coherency with the change in the
'drive_data' field type.

Signed-off-by: Joao Ramos <joao.ramos@inov.pt>
[bart: fix qd65xx build, cast to 'unsigned long', minor Coding Style fixups]
Acked-by: Sergei Shtylyov <sshtylyov@ru.montavista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 9 insertions, 2 deletions

diff --git a/drivers/ide/qd65xx.h b/drivers/ide/qd65xx.h
index d7e67a1a1dcc..1fba2a5f281c 100644
--- a/drivers/ide/qd65xx.h
+++ b/drivers/ide/qd65xx.h
@@ -31,8 +31,15 @@
 
 #define QD_CONFIG(hwif)         ((hwif)->config_data & 0x00ff)
 
-#define QD_TIMING(drive)        (u8)(((drive)->drive_data) & 0x00ff)
-#define QD_TIMREG(drive)        (u8)((((drive)->drive_data) & 0xff00) >> 8)
+static inline u8 QD_TIMING(ide_drive_t *drive)
+{
+        return (unsigned long)ide_get_drivedata(drive) & 0x00ff;
+}
+
+static inline u8 QD_TIMREG(ide_drive_t *drive)
+{
+        return ((unsigned long)ide_get_drivedata(drive) & 0xff00) >> 8;
+}
 
 #define QD6500_DEF_DATA         ((QD_TIM1_PORT<<8) | (QD_ID3 ? 0x0c : 0x08))
 #define QD6580_DEF_DATA         ((QD_TIM1_PORT<<8) | (QD_ID3 ? 0x0a : 0x00))