diff mbox series

[12/15] usb: misc: lvstest: update to use the usb_control_msg_{send|recv}() API

Message ID 20201129160612.1908074-13-anant.thazhemadam@gmail.com (mailing list archive)
State Superseded
Headers show
Series drivers: usb: misc: update to use usb_control_msg_{send|recv}() | expand

Commit Message

Anant Thazhemadam Nov. 29, 2020, 4:06 p.m. UTC
The newer usb_control_msg_{send|recv}() API are an improvement on the
existing usb_control_msg() as it ensures that a short read/write is treated
as an error, data can be used off the stack, and raw usb pipes need not be
created in the calling functions.
For this reason, instances of usb_control_msg() have been replaced with
usb_control_msg_{recv|send}() and the return value checking conditions have
also been modified appropriately.

Signed-off-by: Anant Thazhemadam <anant.thazhemadam@gmail.com>
---
 drivers/usb/misc/lvstest.c | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)
diff mbox series

Patch

diff --git a/drivers/usb/misc/lvstest.c b/drivers/usb/misc/lvstest.c
index f8686139d6f3..ab08483258d2 100644
--- a/drivers/usb/misc/lvstest.c
+++ b/drivers/usb/misc/lvstest.c
@@ -85,17 +85,17 @@  static void destroy_lvs_device(struct usb_device *udev)
 static int lvs_rh_clear_port_feature(struct usb_device *hdev,
 		int port1, int feature)
 {
-	return usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
+	return usb_control_msg_send(hdev, 0,
 		USB_REQ_CLEAR_FEATURE, USB_RT_PORT, feature, port1,
-		NULL, 0, 1000);
+		NULL, 0, 1000, GFP_KERNEL);
 }
 
 static int lvs_rh_set_port_feature(struct usb_device *hdev,
 		int port1, int feature)
 {
-	return usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
+	return usb_control_msg_send(hdev, 0,
 		USB_REQ_SET_FEATURE, USB_RT_PORT, feature, port1,
-		NULL, 0, 1000);
+		NULL, 0, 1000, GFP_KERNEL);
 }
 
 static ssize_t u3_entry_store(struct device *dev,
@@ -271,10 +271,10 @@  static ssize_t get_dev_desc_store(struct device *dev,
 		goto free_desc;
 	}
 
-	ret = usb_control_msg(udev, (PIPE_CONTROL << 30) | USB_DIR_IN,
-			USB_REQ_GET_DESCRIPTOR, USB_DIR_IN, USB_DT_DEVICE << 8,
-			0, descriptor, sizeof(*descriptor),
-			USB_CTRL_GET_TIMEOUT);
+	ret = usb_control_msg_recv(udev, 0, USB_REQ_GET_DESCRIPTOR,
+				   USB_DIR_IN, USB_DT_DEVICE << 8,
+				   0, descriptor, sizeof(*descriptor),
+				   USB_CTRL_GET_TIMEOUT, GFP_KERNEL);
 	if (ret < 0)
 		dev_err(dev, "can't read device descriptor %d\n", ret);
 
@@ -336,10 +336,10 @@  static void lvs_rh_work(struct work_struct *work)
 
 	/* Examine each root port */
 	for (i = 1; i <= descriptor->bNbrPorts; i++) {
-		ret = usb_control_msg(hdev, usb_rcvctrlpipe(hdev, 0),
+		ret = usb_control_msg_recv(hdev, 0,
 			USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, 0, i,
-			port_status, sizeof(*port_status), 1000);
-		if (ret < 4)
+			port_status, sizeof(*port_status), 1000, GFP_KERNEL);
+		if (ret < 0)
 			continue;
 
 		portchange = le16_to_cpu(port_status->wPortChange);
@@ -420,13 +420,13 @@  static int lvs_rh_probe(struct usb_interface *intf,
 	usb_set_intfdata(intf, lvs);
 
 	/* how many number of ports this root hub has */
-	ret = usb_control_msg(hdev, usb_rcvctrlpipe(hdev, 0),
+	ret = usb_control_msg_recv(hdev, 0,
 			USB_REQ_GET_DESCRIPTOR, USB_DIR_IN | USB_RT_HUB,
 			USB_DT_SS_HUB << 8, 0, &lvs->descriptor,
-			USB_DT_SS_HUB_SIZE, USB_CTRL_GET_TIMEOUT);
-	if (ret < (USB_DT_HUB_NONVAR_SIZE + 2)) {
+			USB_DT_SS_HUB_SIZE, USB_CTRL_GET_TIMEOUT, GFP_KERNEL);
+	if (ret < 0) {
 		dev_err(&hdev->dev, "wrong root hub descriptor read %d\n", ret);
-		return ret < 0 ? ret : -EINVAL;
+		return ret;
 	}
 
 	/* submit urb to poll interrupt endpoint */