From a6f4f1662711bd03308371d9649783a5be596898 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Jos=C3=A9=20Exp=C3=B3sito?= Date: Thu, 10 Nov 2022 18:49:18 +0100 Subject: [PATCH] HID: uclogic: Fix frame templates for big endian architectures MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When parsing a frame template with a placeholder indicating the number of buttons present on the frame its value was incorrectly set on big endian architectures due to double little endian conversion. In order to reproduce the issue and verify the fix, run the HID KUnit tests on the PowerPC architecture: $ ./tools/testing/kunit/kunit.py run --kunitconfig=drivers/hid \ --arch=powerpc --cross_compile=powerpc64-linux-gnu- Fixes: 867c89254425 ("HID: uclogic: Allow to generate frame templates") Signed-off-by: José Expósito Signed-off-by: Jiri Kosina --- drivers/hid/hid-uclogic-rdesc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hid/hid-uclogic-rdesc.c b/drivers/hid/hid-uclogic-rdesc.c index 4bd54c4fb5b0..6b73eb0df6bd 100644 --- a/drivers/hid/hid-uclogic-rdesc.c +++ b/drivers/hid/hid-uclogic-rdesc.c @@ -1193,7 +1193,7 @@ __u8 *uclogic_rdesc_template_apply(const __u8 *template_ptr, p[sizeof(btn_head)] < param_num) { v = param_list[p[sizeof(btn_head)]]; put_unaligned((__u8)0x2A, p); /* Usage Maximum */ - put_unaligned_le16((__force u16)cpu_to_le16(v), p + 1); + put_unaligned((__force u16)cpu_to_le16(v), (s16 *)(p + 1)); p += sizeof(btn_head) + 1; } else { p++;