ide: make drive->id an union (take 2)

Make drive->id an unnamed union so id can be accessed either by using
'u16 *id' or 'struct hd_driveid *driveid'.  Then convert all existing
drive->id users accordingly (using 'u16 *id' when possible).

This is an intermediate step to make ide 'struct hd_driveid'-free.

While at it:

- Add missing KERN_CONTs in it821x.c.

- Use ATA_ID_WORDS and ATA_ID_*_LEN defines.

- Remove unnecessary checks for drive->id.

- s/drive_table/table/ in ide_in_drive_list().

- Cleanup ide_config_drive_speed() a bit.

- s/drive1/dev1/ & s/drive0/dev0/ in ide_undecoded_slave().

v2:
Fix typo in drivers/ide/ppc/pmac.c. (From Stephen Rothwell)

There should be no functional changes caused by this patch.

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

1 files changed, 8 insertions, 6 deletions

diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index e9034c0125f3..67f93a46f510 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -965,12 +965,12 @@ static sector_t idefloppy_capacity(ide_drive_t *drive)
  * Check whether we can support a drive, based on the ATAPI IDENTIFY command
  * results.
  */
-static int idefloppy_identify_device(ide_drive_t *drive, struct hd_driveid *id)
+static int idefloppy_identify_device(ide_drive_t *drive, u16 *id)
 {
         u8 gcw[2];
         u8 device_type, protocol, removable, drq_type, packet_size;
 
-        *((u16 *) &gcw) = id->config;
+        *((u16 *)&gcw) = id[ATA_ID_CONFIG];
 
         device_type =  gcw[1] & 0x1F;
         removable   = (gcw[0] & 0x80) >> 7;
@@ -981,7 +981,8 @@ static int idefloppy_identify_device(ide_drive_t *drive, struct hd_driveid *id)
 #ifdef CONFIG_PPC
         /* kludge for Apple PowerBook internal zip */
         if (device_type == 5 &&
-            !strstr(id->model, "CD-ROM") && strstr(id->model, "ZIP"))
+            !strstr((char *)&id[ATA_ID_PROD], "CD-ROM") &&
+            strstr((char *)&id[ATA_ID_PROD], "ZIP"))
                 device_type = 0;
 #endif
 
@@ -1024,9 +1025,10 @@ static inline void idefloppy_add_settings(ide_drive_t *drive) { ; }
 
 static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
 {
+        u16 *id = drive->id;
         u8 gcw[2];
 
-        *((u16 *) &gcw) = drive->id->config;
+        *((u16 *)&gcw) = id[ATA_ID_CONFIG];
         floppy->pc = floppy->pc_stack;
         drive->pc_callback = ide_floppy_callback;
 
@@ -1041,7 +1043,7 @@ static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
          * it. It should be fixed as of version 1.9, but to be on the safe side
          * we'll leave the limitation below for the 2.2.x tree.
          */
-        if (!strncmp(drive->id->model, "IOMEGA ZIP 100 ATAPI", 20)) {
+        if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) {
                 drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE;
                 /* This value will be visible in the /proc/ide/hdx/settings */
                 floppy->ticks = IDEFLOPPY_TICKS_DELAY;
@@ -1052,7 +1054,7 @@ static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
          * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes
          * nasty clicking noises without it, so please don't remove this.
          */
-        if (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) {
+        if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) {
                 blk_queue_max_sectors(drive->queue, 64);
                 drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE;
         }