linux-kernel - [PATCH] Remove of_node_put from drivers/video/fbdev/offb.c

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Date: Fri, 3 May 2024 01:30:11 +0530
From: Aryabhatta Dey <aryabhattadey35@...il.com>
To: linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org, 
	linux-kernel@...r.kernel.org
Cc: deller@....de, tzimmermann@...e.de, sam@...nborg.org, 
	christophe.jaillet@...adoo.fr, javier.carrasco.cruz@...il.com, skhan@...uxfoundation.org
Subject: [PATCH] Remove of_node_put from drivers/video/fbdev/offb.c

Add __free(device_node) to the declaration of the pointer pointing to the pci
parent.
This change replaces the manual clean up done by of_node_put() with scope based
memory management.

Signed-off-by: Aryabhatta Dey <aryabhattadey35@...il.com>
Suggested-by: Julia Lawall <julia.lawall@...ia.fr>
---
 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 };
-- 
2.44.0