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[SCSI] Alter the scsi_add_device() API to conform to what users expect

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The original API returned either an ERR_PTR() or a refcounted sdev.
Unfortunately, if it's successful, you need to do a scsi_device_put() on
the sdev otherwise the refcounting is wrong.

Everyone seems to expect that scsi_add_device() should be callable
without doing the ref put, so alter the API so it is (we still have
__scsi_add_device with the original behaviour).

The only actual caller that needs altering is the one in firewire ...
not because it gets this right, but because it acts on the error if one
is returned.

Acked-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
James Bottomley
2005-09-10 12:44:09 -05:00
committed by James Bottomley
parent b70d37bf61
commit 146f7262ee
3 changed files with 19 additions and 6 deletions
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8
drivers/ieee1394/sbp2.c
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@ -790,7 +790,7 @@ static void sbp2_host_reset(struct hpsb_host *host)
static int sbp2_start_device(struct scsi_id_instance_data *scsi_id)
{
struct sbp2scsi_host_info *hi = scsi_id->hi;
struct scsi_device *sdev;
int error;
SBP2_DEBUG("sbp2_start_device");
@ -939,10 +939,10 @@ alloc_fail:
sbp2_max_speed_and_size(scsi_id);
/* Add this device to the scsi layer now */
sdev = scsi_add_device(scsi_id->scsi_host, 0, scsi_id->ud->id, 0);
if (IS_ERR(sdev)) {
error = scsi_add_device(scsi_id->scsi_host, 0, scsi_id->ud->id, 0);
if (error) {
SBP2_ERR("scsi_add_device failed");
return PTR_ERR(sdev);
return error;
}
return 0;