[linux-5.15.y 3/3] HID: core: Fix size_t specifier in hid_report_raw_event()

[Lee Jones]

From: Nathan Chancellor <nathan@xxxxxxxxxx>

[ Upstream commit 4d3a2a466b8d68d852a1f3bbf11204b718428dc4 ]

When building for 32-bit platforms, for which 'size_t' is
'unsigned int', there are warnings around using the incorrect format
specifier to print bsize in hid_report_raw_event():

  drivers/hid/hid-core.c:2054:29: error: format specifies type 'long' but the argument has type 'size_t' (aka 'unsigned int') [-Werror,-Wformat]
   2053 |                 hid_warn_ratelimited(hid, "Event data for report %d is incorrect (%d vs %ld)\n",
        |                                                                                         ~~~
        |                                                                                         %zu
   2054 |                                      report->id, csize, bsize);
        |                                                         ^~~~~
  drivers/hid/hid-core.c:2076:29: error: format specifies type 'long' but the argument has type 'size_t' (aka 'unsigned int') [-Werror,-Wformat]
   2075 |                 hid_warn_ratelimited(hid, "Event data for report %d was too short (%d vs %ld)\n",
        |                                                                                          ~~~
        |                                                                                          %zu
   2076 |                                      report->id, rsize, bsize);
        |                                                         ^~~~~

Use the proper 'size_t' format specifier, '%zu', to clear up the
warnings.

Cc: stable@xxxxxxxxxxxxxxx
Fixes: 2c85c61d1332 ("HID: pass the buffer size to hid_report_raw_event")
Reported-by: Miguel Ojeda <ojeda@xxxxxxxxxx>
Closes: https://lore.kernel.org/20260516020430.110135-1-ojeda@xxxxxxxxxx/
Signed-off-by: Nathan Chancellor <nathan@xxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
(cherry picked from commit 3ab135238832446399614e7a4bb796d620717806)
Signed-off-by: Lee Jones <lee@xxxxxxxxxx>
(cherry picked from commit 0f77a993b5426cca1b046c9ab4b2f8355a4d45dc)
Signed-off-by: Lee Jones <lee@xxxxxxxxxx>
---
 drivers/hid/hid-core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index a8d4673c7b8e..e106b59b55da 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1793,7 +1793,7 @@ int hid_report_raw_event(struct hid_device *hid, int type, u8 *data,
 		return 0;
 
 	if (unlikely(bsize < csize)) {
-		hid_warn_ratelimited(hid, "Event data for report %d is incorrect (%d vs %ld)\n",
+		hid_warn_ratelimited(hid, "Event data for report %d is incorrect (%d vs %zu)\n",
 				     report->id, csize, bsize);
 		return -EINVAL;
 	}
@@ -1815,7 +1815,7 @@ int hid_report_raw_event(struct hid_device *hid, int type, u8 *data,
 		rsize = max_buffer_size;
 
 	if (bsize < rsize) {
-		hid_warn_ratelimited(hid, "Event data for report %d was too short (%d vs %ld)\n",
+		hid_warn_ratelimited(hid, "Event data for report %d was too short (%d vs %zu)\n",
 				     report->id, rsize, bsize);
 		return -EINVAL;
 	}
-- 
2.54.0.1032.g2f8565e1d1-goog