linux-kernel - [PATCH RFT/RFC 30/49] staging: media: zoran: use devm for videocodec

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1600683624-5863-31-git-send-email-clabbe@baylibre.com>
Date:   Mon, 21 Sep 2020 10:20:05 +0000
From:   Corentin Labbe <clabbe@...libre.com>
To:     gregkh@...uxfoundation.org, laurent.pinchart@...net.be,
        mchehab@...nel.org
Cc:     devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org, Corentin Labbe <clabbe@...libre.com>
Subject: [PATCH RFT/RFC 30/49] staging: media: zoran: use devm for videocodec_master alloc

Let's use devm allocations for videocodec, this simplify code.

Signed-off-by: Corentin Labbe <clabbe@...libre.com>
---
 drivers/staging/media/zoran/zoran_card.c | 22 +++++-----------------
 1 file changed, 5 insertions(+), 17 deletions(-)

diff --git a/drivers/staging/media/zoran/zoran_card.c b/drivers/staging/media/zoran/zoran_card.c
index 62e63804ae14..756b9a339f7e 100644
--- a/drivers/staging/media/zoran/zoran_card.c
+++ b/drivers/staging/media/zoran/zoran_card.c
@@ -989,18 +989,10 @@ static void zoran_remove(struct pci_dev *pdev)
 		goto exit_free;
 
 	/* unregister videocodec bus */
-	if (zr->codec) {
-		struct videocodec_master *master = zr->codec->master_data;
-
+	if (zr->codec)
 		videocodec_detach(zr->codec);
-		kfree(master);
-	}
-	if (zr->vfe) {
-		struct videocodec_master *master = zr->vfe->master_data;
-
+	if (zr->vfe)
 		videocodec_detach(zr->vfe);
-		kfree(master);
-	}
 
 	/* unregister i2c bus */
 	zoran_unregister_i2c(zr);
@@ -1028,7 +1020,7 @@ static struct videocodec_master *zoran_setup_videocodec(struct zoran *zr, int ty
 {
 	struct videocodec_master *m = NULL;
 
-	m = kmalloc(sizeof(*m), GFP_KERNEL);
+	m = devm_kmalloc(&zr->pci_dev->dev, sizeof(*m), GFP_KERNEL);
 	if (!m)
 		return m;
 
@@ -1234,7 +1226,7 @@ static int zoran_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 		zr->codec = videocodec_attach(master_codec);
 		if (!zr->codec) {
 			pci_err(pdev, "%s - no codec found\n", __func__);
-			goto zr_free_codec;
+			goto zr_unreg_i2c;
 		}
 		if (zr->codec->type != zr->card.video_codec) {
 			pci_err(pdev, "%s - wrong codec\n", __func__);
@@ -1248,7 +1240,7 @@ static int zoran_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 		zr->vfe = videocodec_attach(master_vfe);
 		if (!zr->vfe) {
 			pci_err(pdev, "%s - no VFE found\n", __func__);
-			goto zr_free_vfe;
+			goto zr_detach_codec;
 		}
 		if (zr->vfe->type != zr->card.video_vfe) {
 			pci_err(pdev, "%s = wrong VFE\n", __func__);
@@ -1269,12 +1261,8 @@ static int zoran_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 zr_detach_vfe:
 	videocodec_detach(zr->vfe);
-zr_free_vfe:
-	kfree(master_vfe);
 zr_detach_codec:
 	videocodec_detach(zr->codec);
-zr_free_codec:
-	kfree(master_codec);
 zr_unreg_i2c:
 	zoran_unregister_i2c(zr);
 zr_free_irq:
-- 
2.26.2