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media: bt8xx: make bttv_sub_bus_type const

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Now that the driver core can properly handle constant struct bus_type,
move the bttv_sub_bus_type variable to be a constant structure as well,
placing it into read-only memory which can not be modified at runtime.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This commit is contained in:
Ricardo B. Marliere 2024-02-09 20:27:48 -03:00 committed by Hans Verkuil
parent 45d6ed9170
commit 044c566d05
2 changed files with 2 additions and 2 deletions
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2
drivers/media/pci/bt8xx/bttv-gpio.c
View File

@ -55,7 +55,7 @@ static void bttv_sub_remove(struct device *dev)
sub->remove(sdev);
}
struct bus_type bttv_sub_bus_type = {
const struct bus_type bttv_sub_bus_type = {
.name = "bttv-sub",
.match = &bttv_sub_bus_match,
.probe = bttv_sub_probe,

2
drivers/media/pci/bt8xx/bttvp.h
View File

@ -234,7 +234,7 @@ int bttv_s_fmt_vbi_cap(struct file *file, void *fh, struct v4l2_format *f);
/* ---------------------------------------------------------- */
/* bttv-gpio.c */
extern struct bus_type bttv_sub_bus_type;
extern const struct bus_type bttv_sub_bus_type;
int bttv_sub_add_device(struct bttv_core *core, char *name);
int bttv_sub_del_devices(struct bttv_core *core);