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-rw-r--r--drivers/ide/legacy/ht6560b.c23
1 files changed, 16 insertions, 7 deletions
diff --git a/drivers/ide/legacy/ht6560b.c b/drivers/ide/legacy/ht6560b.c
index 2701e7d6caf..78ca68e60f9 100644
--- a/drivers/ide/legacy/ht6560b.c
+++ b/drivers/ide/legacy/ht6560b.c
@@ -21,18 +21,21 @@
* "Prefetch" mode bit OFF for ide disks and
* ON for anything else.
*
+ * Version 0.08 Need to force prefetch for CDs and other non-disk
+ * devices. (not sure which devices exactly need
+ * prefetch)
*
* HT-6560B EIDE-controller support
* To activate controller support use kernel parameter "ide0=ht6560b".
* Use hdparm utility to enable PIO mode support.
*
* Author: Mikko Ala-Fossi <maf@iki.fi>
- * Jan Evert van Grootheest <janevert@iae.nl>
+ * Jan Evert van Grootheest <janevert@caiway.nl>
*
* Try: http://www.maf.iki.fi/~maf/ht6560b/
*/
-#define HT6560B_VERSION "v0.07"
+#define HT6560B_VERSION "v0.08"
#include <linux/module.h>
#include <linux/types.h>
@@ -130,15 +133,20 @@ static void ht6560b_selectproc (ide_drive_t *drive)
u8 select, timing;
local_irq_save(flags);
-
+
select = HT_CONFIG(drive);
timing = HT_TIMING(drive);
-
+
+ /*
+ * Need to enforce prefetch sometimes because otherwise
+ * it'll hang (hard).
+ */
+ if (drive->media != ide_disk || !drive->present)
+ select |= HT_PREFETCH_MODE;
+
if (select != current_select || timing != current_timing) {
current_select = select;
current_timing = timing;
- if (drive->media != ide_disk || !drive->present)
- select |= HT_PREFETCH_MODE;
(void)inb(HT_CONFIG_PORT);
(void)inb(HT_CONFIG_PORT);
(void)inb(HT_CONFIG_PORT);
@@ -188,11 +196,12 @@ static int __init try_to_init_ht6560b(void)
outb(HT_TIMING_DEFAULT, 0x1f6); /* IDE_SELECT_REG */
(void) inb(0x1f7); /* IDE_STATUS_REG */
- printk("\nht6560b " HT6560B_VERSION
+ printk("ht6560b " HT6560B_VERSION
": chipset detected and initialized"
#ifdef DEBUG
" with debug enabled"
#endif
+ "\n"
);
return 1;
}