[PATCH v4 2/9] media: uvcvideo: Allow external entities

From: Ricardo Ribalda
Date: Tue Dec 15 2020 - 10:53:17 EST


Increase the size of the id, to avoid collisions with external entities.

Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
---
drivers/media/usb/uvc/uvc_driver.c | 2 +-
drivers/media/usb/uvc/uvcvideo.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index 4cdd65d252d9..9f4451a2e0a6 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -1024,7 +1024,7 @@ static const u8 uvc_media_transport_input_guid[16] =
UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT;
static const u8 uvc_processing_guid[16] = UVC_GUID_UVC_PROCESSING;

-static struct uvc_entity *uvc_alloc_entity(u16 type, u8 id,
+static struct uvc_entity *uvc_alloc_entity(u16 type, u16 id,
unsigned int num_pads, unsigned int extra_size)
{
struct uvc_entity *entity;
diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
index df7bf2d104a3..00f985001c1d 100644
--- a/drivers/media/usb/uvc/uvcvideo.h
+++ b/drivers/media/usb/uvc/uvcvideo.h
@@ -301,7 +301,7 @@ struct uvc_entity {
* chain. */
unsigned int flags;

- u8 id;
+ u16 id; /* 0-255: usb entity. 256-65535: external entities */
u16 type;
char name[64];
u8 guid[16];
--
2.29.2.684.gfbc64c5ab5-goog