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, 12 insertions, 10 deletions

diff --git a/drivers/ide/legacy/qd65xx.c b/drivers/ide/legacy/qd65xx.c
index 2338f344ea24..ef4e84053a81 100644
--- a/drivers/ide/legacy/qd65xx.c
+++ b/drivers/ide/legacy/qd65xx.c
@@ -151,12 +151,14 @@ static int qd_find_disk_type (ide_drive_t *drive,
                 int *active_time, int *recovery_time)
 {
         struct qd65xx_timing_s *p;
-        char model[40];
+        char *m = (char *)&drive->id[ATA_ID_PROD];
+        char model[ATA_ID_PROD_LEN];
 
-        if (!*drive->id->model) return 0;
+        if (*m == 0)
+                return 0;
 
-        strncpy(model,drive->id->model,40);
-        ide_fixstring(model,40,1); /* byte-swap */
+        strncpy(model, m, ATA_ID_PROD_LEN);
+        ide_fixstring(model, ATA_ID_PROD_LEN, 1); /* byte-swap */
 
         for (p = qd65xx_timing ; p->offset != -1 ; p++) {
                 if (!strncmp(p->model, model+p->offset, 4)) {
@@ -185,20 +187,20 @@ static void qd_set_timing (ide_drive_t *drive, u8 timing)
 
 static void qd6500_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
+        u16 *id = drive->id;
         int active_time   = 175;
         int recovery_time = 415; /* worst case values from the dos driver */
 
         /*
          * FIXME: use "pio" value
          */
-        if (drive->id && !qd_find_disk_type(drive, &active_time, &recovery_time)
-                && drive->id->tPIO && (drive->id->field_valid & 0x02)
-                && drive->id->eide_pio >= 240) {
-
+        if (!qd_find_disk_type(drive, &active_time, &recovery_time) &&
+            drive->driveid->tPIO && (id[ATA_ID_FIELD_VALID] & 2) &&
+            id[ATA_ID_EIDE_PIO] >= 240) {
                 printk(KERN_INFO "%s: PIO mode%d\n", drive->name,
-                                drive->id->tPIO);
+                                drive->driveid->tPIO);
                 active_time = 110;
-                recovery_time = drive->id->eide_pio - 120;
+                recovery_time = drive->id[ATA_ID_EIDE_PIO] - 120;
         }
 
         qd_set_timing(drive, qd6500_compute_timing(HWIF(drive), active_time, recovery_time));