linux-kernel - [PATCH 53/77] mtd: convert to idr

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Date:	Wed,  6 Feb 2013 11:40:25 -0800
From:	Tejun Heo <tj@...nel.org>
To:	akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org, Tejun Heo <tj@...nel.org>,
	David Woodhouse <dwmw2@...radead.org>,
	linux-mtd@...ts.infradead.org
Subject: [PATCH 53/77] mtd: convert to idr_alloc()

Convert to the much saner new idr interface.

Only compile tested.

Signed-off-by: Tejun Heo <tj@...nel.org>
Tested-by: Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>
Cc: David Woodhouse <dwmw2@...radead.org>
Cc: linux-mtd@...ts.infradead.org
---
 drivers/mtd/mtdcore.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index ec794a7..61d5f56 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -349,13 +349,8 @@ int add_mtd_device(struct mtd_info *mtd)
 	BUG_ON(mtd->writesize == 0);
 	mutex_lock(&mtd_table_mutex);
 
-	do {
-		if (!idr_pre_get(&mtd_idr, GFP_KERNEL))
-			goto fail_locked;
-		error = idr_get_new(&mtd_idr, mtd, &i);
-	} while (error == -EAGAIN);
-
-	if (error)
+	i = idr_alloc(&mtd_idr, mtd, 0, 0, GFP_KERNEL);
+	if (i < 0)
 		goto fail_locked;
 
 	mtd->index = i;
-- 
1.8.1

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