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Wed, 21 Oct 2026 05:32:01 -0700 (PDT) Received: from J4f-Laptop.localdomain ([183.36.237.113]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3ad813eb9casm4229523a91.15.2026.10.21.05.31.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Oct 2026 05:32:01 -0700 (PDT) From: Shihuang Liu To: linux-input@vger.kernel.org, linux-hardening@vger.kernel.org Cc: Marcus Folkesson , Dmitry Torokhov , Ville Syrjala , Henk Vergonet , Henrik Rydberg , linux-kernel@vger.kernel.org, Shihuang Liu Subject: [PATCH v2 2/6] Input: joystick - use usb_make_subpath() Date: Wed, 21 Oct 2026 20:31:42 +0800 Message-ID: <20261021123146.17202-3-shlomojune6@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261021123146.17202-1-shlomojune6@gmail.com> References: <20261021123146.17202-1-shlomojune6@gmail.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The pxrc and xpad drivers build their input device physical paths by appending "/input0" with strlcat() after usb_make_path(). In preparation for removing the deprecated strlcat() API [1], replace each pair of calls with usb_make_subpath(). The helper formats the USB path and the "input0" subpath in one call, avoiding a separate buffer scan and append operation. Link: https://github.com/KSPP/linux/issues/370 [1] Signed-off-by: Shihuang Liu --- drivers/input/joystick/pxrc.c | 3 +-- drivers/input/joystick/xpad.c | 3 +-- 2 files changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/input/joystick/pxrc.c b/drivers/input/joystick/pxrc.c index 52d9eab667b7a..1a11e73d7cd04 100644 --- a/drivers/input/joystick/pxrc.c +++ b/drivers/input/joystick/pxrc.c @@ -169,8 +169,7 @@ static int pxrc_probe(struct usb_interface *intf, pxrc->input->name = "PXRC Flight Controller Adapter"; - usb_make_path(udev, pxrc->phys, sizeof(pxrc->phys)); - strlcat(pxrc->phys, "/input0", sizeof(pxrc->phys)); + usb_make_subpath(udev, pxrc->phys, sizeof(pxrc->phys), "input0"); pxrc->input->phys = pxrc->phys; usb_to_input_id(udev, &pxrc->input->id); diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c index feb8f368f834e..0f7ca5adaeee7 100644 --- a/drivers/input/joystick/xpad.c +++ b/drivers/input/joystick/xpad.c @@ -2059,8 +2059,7 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id if (!xpad) return -ENOMEM; - usb_make_path(udev, xpad->phys, sizeof(xpad->phys)); - strlcat(xpad->phys, "/input0", sizeof(xpad->phys)); + usb_make_subpath(udev, xpad->phys, sizeof(xpad->phys), "input0"); xpad->idata = usb_alloc_coherent(udev, XPAD_PKT_LEN, GFP_KERNEL, &xpad->idata_dma); -- 2.43.0