* [PATCH] drivers:video: Implement automatic cleanup for device_node
@ 2024-04-25 7:32 Dorine Tipo
0 siblings, 0 replies; only message in thread
From: Dorine Tipo @ 2024-04-25 7:32 UTC (permalink / raw)
To: Helge Deller, linux-fbdev
Cc: Dorine Tipo, Julia Lawall, Linux-kernel-mentees-request, linux-kernel
This patch removes calls to of_node_put() and adds __free(device_node)
attribute to the device_node declaration in offb_init_palette_hacks().
This reduces the risk of memory leaks by ensuring that the reference
count is automatically managed and decremented when the device_node goes
out of scope.
Signed-off-by: Dorine Tipo <dorine.a.tipo@gmail.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 };
--
2.25.1
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