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[v2,3/7] HID: constify hid_device::rdesc

Message ID 20240803-hid-const-fixup-v2-3-f53d7a7b29d8@weissschuh.net (mailing list archive)
State New
Headers show
Series HID: constify report descriptors | expand

Commit Message

Thomas Weißschuh Aug. 3, 2024, 12:34 p.m. UTC 
Once a report descriptor has been created by the HID core it is not
supposed to be modified anymore.
Enforce this invariant through the type system.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
---
 include/linux/hid.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/include/linux/hid.h b/include/linux/hid.h
index e7a5d6f2f2eb..dda34d8cad19 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -602,7 +602,7 @@  struct hid_ll_driver;
 struct hid_device {							/* device report descriptor */
 	__u8 *dev_rdesc;
 	unsigned dev_rsize;
-	__u8 *rdesc;
+	const __u8 *rdesc;
 	unsigned rsize;
 	struct hid_collection *collection;				/* List of HID collections */
 	unsigned collection_size;					/* Number of allocated hid_collections */