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, 6 insertions, 4 deletions

diff --git a/drivers/ide/icside.c b/drivers/ide/icside.c
index 5af3d0ffaf0a..0f67f1abbbd3 100644
--- a/drivers/ide/icside.c
+++ b/drivers/ide/icside.c
@@ -187,7 +187,8 @@ static const expansioncard_ops_t icside_ops_arcin_v6 = {
  */
 static void icside_set_dma_mode(ide_drive_t *drive, const u8 xfer_mode)
 {
-        int cycle_time, use_dma_info = 0;
+        unsigned long cycle_time;
+        int use_dma_info = 0;
 
         switch (xfer_mode) {
         case XFER_MW_DMA_2:
@@ -218,10 +219,11 @@ static void icside_set_dma_mode(ide_drive_t *drive, const u8 xfer_mode)
         if (use_dma_info && drive->id[ATA_ID_EIDE_DMA_TIME] > cycle_time)
                 cycle_time = drive->id[ATA_ID_EIDE_DMA_TIME];
 
-        drive->drive_data = cycle_time;
+        ide_set_drivedata(drive, (void *)cycle_time);
 
         printk("%s: %s selected (peak %dMB/s)\n", drive->name,
-                ide_xfer_verbose(xfer_mode), 2000 / drive->drive_data);
+                ide_xfer_verbose(xfer_mode),
+                2000 / (unsigned long)ide_get_drivedata(drive));
 }
 
 static const struct ide_port_ops icside_v6_port_ops = {
@@ -277,7 +279,7 @@ static int icside_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
         /*
          * Select the correct timing for this drive.
          */
-        set_dma_speed(ec->dma, drive->drive_data);
+        set_dma_speed(ec->dma, (unsigned long)ide_get_drivedata(drive));
 
         /*
          * Tell the DMA engine about the SG table and