linux-kernel - [PATCH 2/2] HID: uhid: Over-ride the default maximum data buffer value with our own

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Message-Id: <20230113150557.1308176-2-lee@kernel.org>
Date:   Fri, 13 Jan 2023 15:05:57 +0000
From:   Lee Jones <lee@...nel.org>
To:     lee@...nel.org, jikos@...nel.org, benjamin.tissoires@...hat.com,
        avid.rheinsberg@...il.com
Cc:     linux-kernel@...r.kernel.org, linux-input@...r.kernel.org
Subject: [PATCH 2/2] HID: uhid: Over-ride the default maximum data buffer value with our own

The default maximum data buffer size for this interface is UHID_DATA_MAX
(4k).  When data buffers are being processed, ensure this value is used
when ensuring the sanity, rather than a value between the user provided
value and HID_MAX_BUFFER_SIZE (16k).

Signed-off-by: Lee Jones <lee@...nel.org>
---
 drivers/hid/uhid.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c
index 2a918aeb0af13..59ac757c1d471 100644
--- a/drivers/hid/uhid.c
+++ b/drivers/hid/uhid.c
@@ -395,6 +395,7 @@ struct hid_ll_driver uhid_hid_driver = {
 	.parse = uhid_hid_parse,
 	.raw_request = uhid_hid_raw_request,
 	.output_report = uhid_hid_output_report,
+	.max_buffer_size = UHID_DATA_MAX,
 };
 EXPORT_SYMBOL_GPL(uhid_hid_driver);
 
-- 
2.39.0.314.g84b9a713c41-goog