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SubjectRe: [PATCH 1/4] ide-pmac: media-bay support fixes
Date
On Tuesday 24 June 2008, Benjamin Herrenschmidt wrote:
>
> > Build error and/or your build fix would be useful here.
>
> Sorry. Fix was a quick hack. There is a check_media_bay() followed by a
> break; outside of a break-able construct in there (off memory, I'm not
> in front of the dev box right now).

Thanks, 'take 3' follows.

From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] ide-pmac: media-bay support fixes (take 3)

* If MB_CD device has already been detected and bay is in mb_up state just
change bay's state to mb_ide_resetting and let probing thread do the rest
instead of having open-coded waiting for IDE device to become ready in
media_bay_set_ide_infos() and doing the probe by ide_device_add().

* Move media_bay_set_ide_infos() call after ide_device_add().

* Use check_media_bay() instead of check_media_bay_by_base(),
then remove the latter function.

v2:
* Check pmif->mediabay and clear drive->noprobe before calling
media_bay_set_ide_infos().

v3:
* Fix build problem noticed by Ben.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ide/ppc/pmac.c | 15 ++++++++++-----
drivers/macintosh/mediabay.c | 33 +++++----------------------------
include/asm-powerpc/mediabay.h | 1 -
3 files changed, 15 insertions(+), 34 deletions(-)

Index: b/drivers/ide/ppc/pmac.c
===================================================================
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -1030,10 +1030,6 @@ pmac_ide_setup_device(pmac_ide_hwif_t *p
/* XXX FIXME: Media bay stuff need re-organizing */
if (np->parent && np->parent->name
&& strcasecmp(np->parent->name, "media-bay") == 0) {
-#ifdef CONFIG_PMAC_MEDIABAY
- media_bay_set_ide_infos(np->parent, pmif->regbase, pmif->irq,
- hwif);
-#endif /* CONFIG_PMAC_MEDIABAY */
pmif->mediabay = 1;
if (!bidp)
pmif->aapl_bus_id = 1;
@@ -1067,7 +1063,7 @@ pmac_ide_setup_device(pmac_ide_hwif_t *p

if (pmif->mediabay) {
#ifdef CONFIG_PMAC_MEDIABAY
- if (check_media_bay_by_base(pmif->regbase, MB_CD)) {
+ if (check_media_bay(np->parent, MB_CD) != -ENODEV) {
#else
if (1) {
#endif
@@ -1080,6 +1076,15 @@ pmac_ide_setup_device(pmac_ide_hwif_t *p

ide_device_add(idx, &d);

+ if (pmif->mediabay) {
+ hwif->drives[0].noprobe = 0;
+ hwif->drives[1].noprobe = 0;
+#ifdef CONFIG_PMAC_MEDIABAY
+ media_bay_set_ide_infos(np->parent, pmif->regbase, pmif->irq,
+ hwif);
+#endif
+ }
+
return 0;
}

Index: b/drivers/macintosh/mediabay.c
===================================================================
--- a/drivers/macintosh/mediabay.c
+++ b/drivers/macintosh/mediabay.c
@@ -433,21 +433,6 @@ int check_media_bay(struct device_node *
}
EXPORT_SYMBOL(check_media_bay);

-int check_media_bay_by_base(unsigned long base, int what)
-{
- int i;
-
- for (i=0; i<media_bay_count; i++)
- if (media_bays[i].mdev && base == (unsigned long) media_bays[i].cd_base) {
- if ((what == media_bays[i].content_id) && media_bays[i].state == mb_up)
- return 0;
- media_bays[i].cd_index = -1;
- return -EINVAL;
- }
-
- return -ENODEV;
-}
-
int media_bay_set_ide_infos(struct device_node* which_bay, unsigned long base,
int irq, ide_hwif_t *hwif)
{
@@ -457,8 +442,6 @@ int media_bay_set_ide_infos(struct devic
struct media_bay_info* bay = &media_bays[i];

if (bay->mdev && which_bay == bay->mdev->ofdev.node) {
- int timeout = 5000, index = hwif->index;
-
down(&bay->lock);

bay->cd_port = hwif;
@@ -469,18 +452,12 @@ int media_bay_set_ide_infos(struct devic
up(&bay->lock);
return 0;
}
- printk(KERN_DEBUG "Registered ide%d for media bay %d\n", index, i);
- do {
- if (MB_IDE_READY(i)) {
- bay->cd_index = index;
- up(&bay->lock);
- return 0;
- }
- mdelay(1);
- } while(--timeout);
- printk(KERN_DEBUG "Timeount waiting IDE in bay %d\n", i);
+
+ /* let probing thread do the rest */
+ bay->state = mb_ide_resetting;
+
up(&bay->lock);
- return -ENODEV;
+ return 0;
}
}

Index: b/include/asm-powerpc/mediabay.h
===================================================================
--- a/include/asm-powerpc/mediabay.h
+++ b/include/asm-powerpc/mediabay.h
@@ -23,7 +23,6 @@ extern int media_bay_count;
#ifdef CONFIG_BLK_DEV_IDE_PMAC
#include <linux/ide.h>

-int check_media_bay_by_base(unsigned long base, int what);
/* called by IDE PMAC host driver to register IDE controller for media bay */
int media_bay_set_ide_infos(struct device_node *which_bay, unsigned long base,
int irq, ide_hwif_t *hwif);

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