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From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: Johan Hovold <johan@kernel.org>,
	Alex Elder <elder@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-kernel@vger.kernel.org,
	kernel-janitors@vger.kernel.org,
	Christophe JAILLET <christophe.jaillet@wanadoo.fr>,
	greybus-dev@lists.linaro.org
Subject: [PATCH] greybus: Remove usage of the deprecated ida_simple_xx() API
Date: Sun, 14 Jan 2024 10:57:02 +0100
Message-ID: <26425379d3eb9ba1b9af44468576ee20c77eb248.1705226208.git.christophe.jaillet@wanadoo.fr>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

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@wanadoo.fr>
---
 drivers/greybus/es2.c       |  8 ++++----
 drivers/greybus/hd.c        | 16 ++++++++--------
 drivers/greybus/interface.c |  9 ++++-----
 3 files changed, 16 insertions(+), 17 deletions(-)

diff --git a/drivers/greybus/es2.c b/drivers/greybus/es2.c
index e89cca015095..1ee78d0d90b4 100644
--- a/drivers/greybus/es2.c
+++ b/drivers/greybus/es2.c
@@ -513,16 +513,16 @@ static int es2_cport_allocate(struct gb_host_device *hd, int cport_id,
 
 	if (cport_id < 0) {
 		ida_start = 0;
-		ida_end = hd->num_cports;
+		ida_end = hd->num_cports - 1;
 	} else if (cport_id < hd->num_cports) {
 		ida_start = cport_id;
-		ida_end = cport_id + 1;
+		ida_end = cport_id;
 	} else {
 		dev_err(&hd->dev, "cport %d not available\n", cport_id);
 		return -EINVAL;
 	}
 
-	return ida_simple_get(id_map, ida_start, ida_end, GFP_KERNEL);
+	return ida_alloc_range(id_map, ida_start, ida_end, GFP_KERNEL);
 }
 
 static void es2_cport_release(struct gb_host_device *hd, u16 cport_id)
@@ -535,7 +535,7 @@ static void es2_cport_release(struct gb_host_device *hd, u16 cport_id)
 		return;
 	}
 
-	ida_simple_remove(&hd->cport_id_map, cport_id);
+	ida_free(&hd->cport_id_map, cport_id);
 }
 
 static int cport_enable(struct gb_host_device *hd, u16 cport_id,
diff --git a/drivers/greybus/hd.c b/drivers/greybus/hd.c
index 72b21bf2d7d3..bc5fd2f53d8b 100644
--- a/drivers/greybus/hd.c
+++ b/drivers/greybus/hd.c
@@ -50,7 +50,7 @@ int gb_hd_cport_reserve(struct gb_host_device *hd, u16 cport_id)
 	struct ida *id_map = &hd->cport_id_map;
 	int ret;
 
-	ret = ida_simple_get(id_map, cport_id, cport_id + 1, GFP_KERNEL);
+	ret = ida_alloc_range(id_map, cport_id, cport_id, GFP_KERNEL);
 	if (ret < 0) {
 		dev_err(&hd->dev, "failed to reserve cport %u\n", cport_id);
 		return ret;
@@ -64,7 +64,7 @@ void gb_hd_cport_release_reserved(struct gb_host_device *hd, u16 cport_id)
 {
 	struct ida *id_map = &hd->cport_id_map;
 
-	ida_simple_remove(id_map, cport_id);
+	ida_free(id_map, cport_id);
 }
 EXPORT_SYMBOL_GPL(gb_hd_cport_release_reserved);
 
@@ -80,16 +80,16 @@ int gb_hd_cport_allocate(struct gb_host_device *hd, int cport_id,
 
 	if (cport_id < 0) {
 		ida_start = 0;
-		ida_end = hd->num_cports;
+		ida_end = hd->num_cports - 1;
 	} else if (cport_id < hd->num_cports) {
 		ida_start = cport_id;
-		ida_end = cport_id + 1;
+		ida_end = cport_id;
 	} else {
 		dev_err(&hd->dev, "cport %d not available\n", cport_id);
 		return -EINVAL;
 	}
 
-	return ida_simple_get(id_map, ida_start, ida_end, GFP_KERNEL);
+	return ida_alloc_range(id_map, ida_start, ida_end, GFP_KERNEL);
 }
 
 /* Locking: Caller guarantees serialisation */
@@ -100,7 +100,7 @@ void gb_hd_cport_release(struct gb_host_device *hd, u16 cport_id)
 		return;
 	}
 
-	ida_simple_remove(&hd->cport_id_map, cport_id);
+	ida_free(&hd->cport_id_map, cport_id);
 }
 
 static void gb_hd_release(struct device *dev)
@@ -111,7 +111,7 @@ static void gb_hd_release(struct device *dev)
 
 	if (hd->svc)
 		gb_svc_put(hd->svc);
-	ida_simple_remove(&gb_hd_bus_id_map, hd->bus_id);
+	ida_free(&gb_hd_bus_id_map, hd->bus_id);
 	ida_destroy(&hd->cport_id_map);
 	kfree(hd);
 }
@@ -162,7 +162,7 @@ struct gb_host_device *gb_hd_create(struct gb_hd_driver *driver,
 	if (!hd)
 		return ERR_PTR(-ENOMEM);
 
-	ret = ida_simple_get(&gb_hd_bus_id_map, 1, 0, GFP_KERNEL);
+	ret = ida_alloc_min(&gb_hd_bus_id_map, 1, GFP_KERNEL);
 	if (ret < 0) {
 		kfree(hd);
 		return ERR_PTR(ret);
diff --git a/drivers/greybus/interface.c b/drivers/greybus/interface.c
index 9ec949a438ef..c3cfd62831ff 100644
--- a/drivers/greybus/interface.c
+++ b/drivers/greybus/interface.c
@@ -131,9 +131,8 @@ static int gb_interface_route_create(struct gb_interface *intf)
 	int ret;
 
 	/* Allocate an interface device id. */
-	ret = ida_simple_get(&svc->device_id_map,
-			     GB_SVC_DEVICE_ID_MIN, GB_SVC_DEVICE_ID_MAX + 1,
-			     GFP_KERNEL);
+	ret = ida_alloc_range(&svc->device_id_map, GB_SVC_DEVICE_ID_MIN,
+			      GB_SVC_DEVICE_ID_MAX, GFP_KERNEL);
 	if (ret < 0) {
 		dev_err(&intf->dev, "failed to allocate device id: %d\n", ret);
 		return ret;
@@ -165,7 +164,7 @@ static int gb_interface_route_create(struct gb_interface *intf)
 	 * XXX anymore.
 	 */
 err_ida_remove:
-	ida_simple_remove(&svc->device_id_map, device_id);
+	ida_free(&svc->device_id_map, device_id);
 
 	return ret;
 }
@@ -178,7 +177,7 @@ static void gb_interface_route_destroy(struct gb_interface *intf)
 		return;
 
 	gb_svc_route_destroy(svc, svc->ap_intf_id, intf->interface_id);
-	ida_simple_remove(&svc->device_id_map, intf->device_id);
+	ida_free(&svc->device_id_map, intf->device_id);
 	intf->device_id = GB_INTERFACE_DEVICE_ID_BAD;
 }
 
-- 
2.43.0