linux-kernel - [PATCH] media: tw5864: Simplify 'tw5864

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Message-Id: <189d4fd72db8707cb495e3a29ab7a276e07f62a0.1634373552.git.christophe.jaillet@wanadoo.fr>
Date:   Sat, 16 Oct 2021 10:40:29 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     maintainers@...echerrydvr.com, anton@...p.bluecherry.net,
        andrey.utkin@...p.bluecherry.net, mchehab@...nel.org
Cc:     linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] media: tw5864: Simplify 'tw5864_finidev()'

Some resources are allocated with 'pci_request_regions()', so use
'pci_release_regions()' to free them, instead of a verbose
'release_mem_region()'.

There is no point in calling 'devm_kfree()'. The corresponding resource is
managed, so it will be fried automatically.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/media/pci/tw5864/tw5864-core.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/media/pci/tw5864/tw5864-core.c b/drivers/media/pci/tw5864/tw5864-core.c
index 23d3cae54a5d..fee3b7711901 100644
--- a/drivers/media/pci/tw5864/tw5864-core.c
+++ b/drivers/media/pci/tw5864/tw5864-core.c
@@ -333,11 +333,9 @@ static void tw5864_finidev(struct pci_dev *pci_dev)
 
 	/* release resources */
 	iounmap(dev->mmio);
-	release_mem_region(pci_resource_start(pci_dev, 0),
-			   pci_resource_len(pci_dev, 0));
+	pci_release_regions(pci_dev);
 
 	v4l2_device_unregister(&dev->v4l2_dev);
-	devm_kfree(&pci_dev->dev, dev);
 }
 
 static struct pci_driver tw5864_pci_driver = {
-- 
2.30.2