ide: dynamic allocation of device structures
Allocate device structures dynamically instead of having them embedded
in ide_hwif_t:
* Remove needless zeroing of port structure from ide_init_port_data().
* Add ide_hwif_t.devices[MAX_DRIVES] (table of pointers to the devices).
* Add ide_port_{alloc,free}_devices() helpers and use them respectively
in ide_{host,free}_alloc().
* Convert all users of ->drives[] to use ->devices[] instead.
While at it:
* Use drive->dn for the slave device check in scc_pata.c.
As a nice side-effect this patch cuts ~1kB (x86-32) from the resulting
code size:
text data bss dec hex filename
53963 1244 237 55444 d894 drivers/ide/ide-core.o.before
52981 1244 237 54462 d4be drivers/ide/ide-core.o.after
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index d985a9e..1dc827f 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c
@@ -599,7 +599,7 @@
char name[64];
for (d = 0; d < MAX_DRIVES; d++) {
- ide_drive_t *drive = &hwif->drives[d];
+ ide_drive_t *drive = hwif->devices[d];
if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0 || drive->proc)
continue;