[PATCH 12/15] ide: make probe_hwif() return an error value

Bartlomiej Zolnierkiewicz
2008-01-04T21:17:26Z

Make probe_hwif() return an error value.

While at it:

* Remove comment about MAX_DRIVES == 2 limitation (it is not special to
probe_hwif(), it is a general assumption taken by a lot of IDE code).

* Rename probe_hwif() to ide_probe_port().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ide/ide-iops.c | 2 +-
drivers/ide/ide-probe.c | 16 +++++++---------
drivers/ide/pci/ns87415.c | 4 ++--
3 files changed, 10 insertions(+), 12 deletions(-)

Index: b/drivers/ide/ide-iops.c
===================================================================
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -1166,7 +1166,7 @@ EXPORT_SYMBOL(ide_do_reset);

/*
* ide_wait_not_busy() waits for the currently selected device on the hwif
- * to report a non-busy status, see comments in probe_hwif().
+ * to report a non-busy status, see comments in ide_probe_port().
*/
int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout)
{
Index: b/drivers/ide/ide-probe.c
===================================================================
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -738,24 +738,20 @@ void ide_undecoded_slave(ide_drive_t *dr

EXPORT_SYMBOL_GPL(ide_undecoded_slave);

-/*
- * This routine only knows how to look for drive units 0 and 1
- * on an interface, so any setting of MAX_DRIVES > 2 won't work here.
- */
-static void probe_hwif(ide_hwif_t *hwif)
+static int ide_probe_port(ide_hwif_t *hwif)
{
unsigned long flags;
unsigned int irqd;
int unit;

if (hwif->noprobe)
- return;
+ return -EACCES;

if ((hwif->chipset != ide_4drives || !hwif->mate || !hwif->mate->present) &&
(ide_hwif_request_regions(hwif))) {
printk(KERN_ERR "%s: ports already in use, skipping probe\n",
hwif->name);
- return;
+ return -EBUSY;
}

/*
@@ -804,7 +800,7 @@ static void probe_hwif(ide_hwif_t *hwif)

if (!hwif->present) {
ide_hwif_release_regions(hwif);
- return;
+ return -ENODEV;
}

for (unit = 0; unit < MAX_DRIVES; unit++) {
@@ -840,6 +836,8 @@ static void probe_hwif(ide_hwif_t *hwif)
else
drive->no_io_32bit = drive->id->dword_io ? 1 : 0;
}
+
+ return 0;
}

#if MAX_HWIFS > 1
@@ -1311,7 +1309,7 @@ int ide_device_add_all(u8 *idx)
if (idx[i] == 0xff)
continue;

- probe_hwif(&ide_hwifs[idx[i]]);
+ (void)ide_probe_port(&ide_hwifs[idx[i]]);
}

for (i = 0; i < MAX_HWIFS; i++) {
Index: b/drivers/ide/pci/ns87415.c
===================================================================
--- a/drivers/ide/pci/ns87415.c
+++ b/drivers/ide/pci/ns87415.c
@@ -229,8 +229,8 @@ static void __devinit init_hwif_ns87415

#ifdef __sparc_v9__
/*
- * XXX: Reset the device, if we don't it will not respond
- * to SELECT_DRIVE() properly during first probe_hwif().
+ * XXX: Reset the device, if we don't it will not respond to
+ * SELECT_DRIVE() properly during first ide_probe_port().
*/
timeout = 10000;
outb(12, hwif->io_ports[IDE_CONTROL_OFFSET]);