linux-kernel - [PATCH] video: fbdev: replacing of_node_put with __free(device

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Message-Id: <20240423012021.56470-1-abdulrasaqolawani@gmail.com>
Date: Mon, 22 Apr 2024 21:20:21 -0400
From: Abdulrasaq Lawani <abdulrasaqolawani@...il.com>
To: deller@....de,
	sam@...nborg.org,
	tzimmermann@...e.de,
	christophe.jaillet@...adoo.fr,
	u.kleine-koenig@...gutronix.de,
	julia.lawall@...ia.fr
Cc: Abdulrasaq Lawani <abdulrasaqolawani@...il.com>,
	linux-fbdev@...r.kernel.org,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	skhan@...uxfoundation.org,
	javier.carrasco.cruz@...il.com
Subject: [PATCH] video: fbdev: replacing of_node_put with __free(device_node)

Replaced instance of of_node_put with __free(device_node)
to simplify code and protect against any memory leaks
due to future changes in the control flow.

Suggested-by: Julia Lawall <julia.lawall@...ia.fr>
Signed-off-by: Abdulrasaq Lawani <abdulrasaqolawani@...il.com>
---
 drivers/video/fbdev/offb.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/video/fbdev/offb.c b/drivers/video/fbdev/offb.c
index b421b46d88ef..ea38a260774b 100644
--- a/drivers/video/fbdev/offb.c
+++ b/drivers/video/fbdev/offb.c
@@ -357,7 +357,7 @@ static void offb_init_palette_hacks(struct fb_info *info, struct device_node *dp
 			par->cmap_type = cmap_gxt2000;
 	} else if (of_node_name_prefix(dp, "vga,Display-")) {
 		/* Look for AVIVO initialized by SLOF */
-		struct device_node *pciparent = of_get_parent(dp);
+		struct device_node *pciparent __free(device_node) = of_get_parent(dp);
 		const u32 *vid, *did;
 		vid = of_get_property(pciparent, "vendor-id", NULL);
 		did = of_get_property(pciparent, "device-id", NULL);
@@ -369,7 +369,6 @@ static void offb_init_palette_hacks(struct fb_info *info, struct device_node *dp
 			if (par->cmap_adr)
 				par->cmap_type = cmap_avivo;
 		}
-		of_node_put(pciparent);
 	} else if (dp && of_device_is_compatible(dp, "qemu,std-vga")) {
 #ifdef __BIG_ENDIAN
 		const __be32 io_of_addr[3] = { 0x01000000, 0x0, 0x0 };
-- 
2.34.1