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media: v4l2-core: simplify v4l2_m2m_register_entity()

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Avoid 'strlen()'/'kmalloc()'/'snprintf()' sequence by using
the convenient 'kasprintf()' in 'v4l2_m2m_register_entity()'.

Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
This commit is contained in:
Dmitry Antipov
2025-11-01 12:08:00 +03:00
committed by Hans Verkuil
parent ceff18405f
commit 42bf68dfef
1 changed files with 3 additions and 7 deletions
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10
drivers/media/v4l2-core/v4l2-mem2mem.c
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@@ -1037,8 +1037,6 @@ static int v4l2_m2m_register_entity(struct media_device *mdev,
{
struct media_entity *entity;
struct media_pad *pads;
char *name;
unsigned int len;
int num_pads;
int ret;
@@ -1071,12 +1069,10 @@ static int v4l2_m2m_register_entity(struct media_device *mdev,
entity->info.dev.major = VIDEO_MAJOR;
entity->info.dev.minor = vdev->minor;
}
len = strlen(vdev->name) + 2 + strlen(m2m_entity_name[type]);
name = kmalloc(len, GFP_KERNEL);
if (!name)
entity->name = kasprintf(GFP_KERNEL, "%s-%s", vdev->name,
m2m_entity_name[type]);
if (!entity->name)
return -ENOMEM;
snprintf(name, len, "%s-%s", vdev->name, m2m_entity_name[type]);
entity->name = name;
entity->function = function;
ret = media_entity_pads_init(entity, num_pads, pads);