linux-kernel - [PATCH] mmc: core: Remove usage of the deprecated ida_simple

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Message-ID: <583c57d0ae09f9d3a1e1a7b80c1e39ada17954b7.1705244502.git.christophe.jaillet@wanadoo.fr>
Date: Sun, 14 Jan 2024 16:01:57 +0100
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: Ulf Hansson <ulf.hansson@...aro.org>
Cc: linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>,
	linux-mmc@...r.kernel.org
Subject: [PATCH] mmc: core: Remove usage of the deprecated ida_simple_xx() API

ida_alloc() and ida_free() should be preferred to the deprecated
ida_simple_get() and ida_simple_remove().

Note that the upper limit of ida_simple_get() is exclusive, but the one of
ida_alloc_range()/ida_alloc_max() is inclusive. So a -1 has been added when
needed.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/mmc/core/block.c | 12 ++++++------
 drivers/mmc/core/host.c  |  5 +++--
 2 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index 32d49100dff5..a9b60b91e32f 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -206,7 +206,7 @@ static void mmc_blk_kref_release(struct kref *ref)
 	int devidx;
 
 	devidx = mmc_get_devidx(md->disk);
-	ida_simple_remove(&mmc_blk_ida, devidx);
+	ida_free(&mmc_blk_ida, devidx);
 
 	mutex_lock(&open_lock);
 	md->disk->private_data = NULL;
@@ -2467,7 +2467,7 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card,
 	bool cache_enabled = false;
 	bool fua_enabled = false;
 
-	devidx = ida_simple_get(&mmc_blk_ida, 0, max_devices, GFP_KERNEL);
+	devidx = ida_alloc_max(&mmc_blk_ida, max_devices - 1, GFP_KERNEL);
 	if (devidx < 0) {
 		/*
 		 * We get -ENOSPC because there are no more any available
@@ -2577,7 +2577,7 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card,
  err_kfree:
 	kfree(md);
  out:
-	ida_simple_remove(&mmc_blk_ida, devidx);
+	ida_free(&mmc_blk_ida, devidx);
 	return ERR_PTR(ret);
 }
 
@@ -2703,7 +2703,7 @@ static void mmc_blk_rpmb_device_release(struct device *dev)
 {
 	struct mmc_rpmb_data *rpmb = dev_get_drvdata(dev);
 
-	ida_simple_remove(&mmc_rpmb_ida, rpmb->id);
+	ida_free(&mmc_rpmb_ida, rpmb->id);
 	kfree(rpmb);
 }
 
@@ -2719,13 +2719,13 @@ static int mmc_blk_alloc_rpmb_part(struct mmc_card *card,
 	struct mmc_rpmb_data *rpmb;
 
 	/* This creates the minor number for the RPMB char device */
-	devidx = ida_simple_get(&mmc_rpmb_ida, 0, max_devices, GFP_KERNEL);
+	devidx = ida_alloc_max(&mmc_rpmb_ida, max_devices - 1, GFP_KERNEL);
 	if (devidx < 0)
 		return devidx;
 
 	rpmb = kzalloc(sizeof(*rpmb), GFP_KERNEL);
 	if (!rpmb) {
-		ida_simple_remove(&mmc_rpmb_ida, devidx);
+		ida_free(&mmc_rpmb_ida, devidx);
 		return -ENOMEM;
 	}
 
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index cf396e8f34e9..7cc9a33d28ca 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -76,7 +76,7 @@ static void mmc_host_classdev_release(struct device *dev)
 	struct mmc_host *host = cls_dev_to_mmc_host(dev);
 	wakeup_source_unregister(host->ws);
 	if (of_alias_get_id(host->parent->of_node, "mmc") < 0)
-		ida_simple_remove(&mmc_host_ida, host->index);
+		ida_free(&mmc_host_ida, host->index);
 	kfree(host);
 }
 
@@ -538,7 +538,8 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
 		min_idx = mmc_first_nonreserved_index();
 		max_idx = 0;
 
-		index = ida_simple_get(&mmc_host_ida, min_idx, max_idx, GFP_KERNEL);
+		index = ida_alloc_range(&mmc_host_ida, min_idx, max_idx - 1,
+					GFP_KERNEL);
 		if (index < 0) {
 			kfree(host);
 			return NULL;
-- 
2.43.0