From: Riwen Lu <luriwen@kylinos.cn>

The format '%*ph' prints up to 64 bytes long as a hex string with ' '
separator. Usually the size of report descriptor is larger than 64
bytes, so consider using print_hex_dump_debug to print out all of it for
better debugging.

Signed-off-by: Riwen Lu <luriwen@kylinos.cn>

---
v1->v2:
 - Add a prefix for the hex dump.

v2->v3:
 - Print the size of report descriptor.
---
 drivers/hid/i2c-hid/i2c-hid-core.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/hid/i2c-hid/i2c-hid-core.c b/drivers/hid/i2c-hid/i2c-hid-core.c
index efbba0465eef..dd69abdd1f0d 100644
--- a/drivers/hid/i2c-hid/i2c-hid-core.c
+++ b/drivers/hid/i2c-hid/i2c-hid-core.c
@@ -772,7 +772,9 @@ static int i2c_hid_parse(struct hid_device *hid)
 		}
 	}
 
-	i2c_hid_dbg(ihid, "Report Descriptor: %*ph\n", rsize, rdesc);
+	i2c_hid_dbg(ihid, "Report Descriptor size: %#x\n", rsize);
+	print_hex_dump_debug("Report Descriptor: ", DUMP_PREFIX_OFFSET, 16, 1,
+			rdesc, rsize, false);
 
 	ret = hid_parse_report(hid, rdesc, rsize);
 	if (!use_override)
-- 
2.25.1

On Fri, 01 Sep, 2023 16:33:56 +0800 "Riwen Lu" <luriwen@hotmail.com> wrote:
> From: Riwen Lu <luriwen@kylinos.cn>
>
> The format '%*ph' prints up to 64 bytes long as a hex string with ' '
> separator. Usually the size of report descriptor is larger than 64
> bytes, so consider using print_hex_dump_debug to print out all of it for
> better debugging.
>
> Signed-off-by: Riwen Lu <luriwen@kylinos.cn>
>
> ---
> v1->v2:
>  - Add a prefix for the hex dump.
>
> v2->v3:
>  - Print the size of report descriptor.
> ---
>  drivers/hid/i2c-hid/i2c-hid-core.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/hid/i2c-hid/i2c-hid-core.c b/drivers/hid/i2c-hid/i2c-hid-core.c
> index efbba0465eef..dd69abdd1f0d 100644
> --- a/drivers/hid/i2c-hid/i2c-hid-core.c
> +++ b/drivers/hid/i2c-hid/i2c-hid-core.c
> @@ -772,7 +772,9 @@ static int i2c_hid_parse(struct hid_device *hid)
>  		}
>  	}
>
> -	i2c_hid_dbg(ihid, "Report Descriptor: %*ph\n", rsize, rdesc);
> +	i2c_hid_dbg(ihid, "Report Descriptor size: %#x\n", rsize);
> +	print_hex_dump_debug("Report Descriptor: ", DUMP_PREFIX_OFFSET, 16, 1,
> +			rdesc, rsize, false);
>
>  	ret = hid_parse_report(hid, rdesc, rsize);
>  	if (!use_override)

Thanks for the new version.

Reviewed-by: Rahul Rameshbabu <sergeantsagara@protonmail.com>