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Wed, 21 Oct 2026 05:32:09 -0700 (PDT) Received: from J4f-Laptop.localdomain ([183.36.237.113]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3ad813eb9casm4229523a91.15.2026.10.21.05.32.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Oct 2026 05:32:09 -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 4/6] Input: mouse - use usb_make_subpath() Date: Wed, 21 Oct 2026 20:31:44 +0800 Message-ID: <20261021123146.17202-5-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 appletouch, bcm5974 and synaptics_usb 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/mouse/appletouch.c | 3 +-- drivers/input/mouse/bcm5974.c | 3 +-- drivers/input/mouse/synaptics_usb.c | 3 +-- 3 files changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/input/mouse/appletouch.c b/drivers/input/mouse/appletouch.c index eebeb57515e1c..b536dfae427de 100644 --- a/drivers/input/mouse/appletouch.c +++ b/drivers/input/mouse/appletouch.c @@ -874,8 +874,7 @@ static int atp_probe(struct usb_interface *iface, if (error) goto err_free_buffer; - usb_make_path(udev, dev->phys, sizeof(dev->phys)); - strlcat(dev->phys, "/input0", sizeof(dev->phys)); + usb_make_subpath(udev, dev->phys, sizeof(dev->phys), "input0"); input_dev->name = "appletouch"; input_dev->phys = dev->phys; diff --git a/drivers/input/mouse/bcm5974.c b/drivers/input/mouse/bcm5974.c index e772bac3b64c0..0732bf3a97adc 100644 --- a/drivers/input/mouse/bcm5974.c +++ b/drivers/input/mouse/bcm5974.c @@ -989,8 +989,7 @@ static int bcm5974_probe(struct usb_interface *iface, dev->tp_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; /* create bcm5974 device */ - usb_make_path(udev, dev->phys, sizeof(dev->phys)); - strlcat(dev->phys, "/input0", sizeof(dev->phys)); + usb_make_subpath(udev, dev->phys, sizeof(dev->phys), "input0"); input_dev->name = "bcm5974"; input_dev->phys = dev->phys; diff --git a/drivers/input/mouse/synaptics_usb.c b/drivers/input/mouse/synaptics_usb.c index 880a0c79148cd..7da22118ce576 100644 --- a/drivers/input/mouse/synaptics_usb.c +++ b/drivers/input/mouse/synaptics_usb.c @@ -353,8 +353,7 @@ static int synusb_probe(struct usb_interface *intf, if (synusb->flags & SYNUSB_STICK) strlcat(synusb->name, " (Stick)", sizeof(synusb->name)); - usb_make_path(udev, synusb->phys, sizeof(synusb->phys)); - strlcat(synusb->phys, "/input0", sizeof(synusb->phys)); + usb_make_subpath(udev, synusb->phys, sizeof(synusb->phys), "input0"); input_dev->name = synusb->name; input_dev->phys = synusb->phys; -- 2.43.0