From 15e11219285fba5ea02cca4374ec1899cb4a83b2 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Wed, 5 Oct 2011 11:42:38 +1100 Subject: [PATCH] drivers/scsi/osd/osd_uld.c: use ida_simple_get() to handle id This does involve additional use of the spin lock in idr.c. Is this an issue? Also, some error mangling was needed to keep the interface the same. Does this matter or can we return -ENOSPC instead of -EBUSY? Signed-off-by: Jonathan Cameron Cc: Rusty Russell Cc: Tejun Heo Cc: James Bottomley Cc: Boaz Harrosh Cc: Benny Halevy Signed-off-by: Andrew Morton --- drivers/scsi/osd/osd_uld.c | 22 ++++++++-------------- 1 file changed, 8 insertions(+), 14 deletions(-) diff --git a/drivers/scsi/osd/osd_uld.c b/drivers/scsi/osd/osd_uld.c index b31a8e3841d7..fa849bdd230f 100644 --- a/drivers/scsi/osd/osd_uld.c +++ b/drivers/scsi/osd/osd_uld.c @@ -387,7 +387,7 @@ static void __remove(struct device *dev) if (oud->disk) put_disk(oud->disk); - ida_remove(&osd_minor_ida, oud->minor); + ida_simple_remove(&osd_minor_ida, oud->minor); kfree(oud); } @@ -403,18 +403,12 @@ static int osd_probe(struct device *dev) if (scsi_device->type != TYPE_OSD) return -ENODEV; - do { - if (!ida_pre_get(&osd_minor_ida, GFP_KERNEL)) - return -ENODEV; - - error = ida_get_new(&osd_minor_ida, &minor); - } while (error == -EAGAIN); - - if (error) - return error; - if (minor >= SCSI_OSD_MAX_MINOR) { - error = -EBUSY; - goto err_retract_minor; + minor = ida_simple_get(&osd_minor_ida, 0, + SCSI_OSD_MAX_MINOR, GFP_KERNEL); + if (minor < 0) { + if (minor == -ENOSPC) + return -EBUSY; + return minor; } error = -ENOMEM; @@ -491,7 +485,7 @@ err_free_osd: dev_set_drvdata(dev, NULL); kfree(oud); err_retract_minor: - ida_remove(&osd_minor_ida, minor); + ida_simple_remove(&osd_minor_ida, minor); return error; } -- 2.39.5