Inside usbtmc_ioctl_clear_out_halt()/usbtmc_ioctl_clear_in_halt(),
usb_clear_halt() needn't any buffer to pass in, so remove the
unnecessary memory allocation.
Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxxxxx>
---
drivers/usb/class/usbtmc.c | 26 ++++----------------------
1 file changed, 4 insertions(+), 22 deletions(-)
diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index 70d69d0..4c5506a 100644
--- a/drivers/usb/class/usbtmc.c
+++ b/drivers/usb/class/usbtmc.c
@@ -718,50 +718,32 @@ exit:
static int usbtmc_ioctl_clear_out_halt(struct usbtmc_device_data *data)
{
- u8 *buffer;
int rv;
- buffer = kmalloc(2, GFP_KERNEL);
- if (!buffer)
- return -ENOMEM;
-
rv = usb_clear_halt(data->usb_dev,
usb_sndbulkpipe(data->usb_dev, data->bulk_out));
if (rv < 0) {
dev_err(&data->usb_dev->dev, "usb_control_msg returned %d\n",
rv);
- goto exit;
+ return rv;
}
- rv = 0;
-
-exit:
- kfree(buffer);
- return rv;
+ return 0;
}
static int usbtmc_ioctl_clear_in_halt(struct usbtmc_device_data *data)
{
- u8 *buffer;
int rv;
- buffer = kmalloc(2, GFP_KERNEL);
- if (!buffer)
- return -ENOMEM;
-
rv = usb_clear_halt(data->usb_dev,
usb_rcvbulkpipe(data->usb_dev, data->bulk_in));
if (rv < 0) {
dev_err(&data->usb_dev->dev, "usb_control_msg returned %d\n",
rv);
- goto exit;
+ return rv;
}
- rv = 0;
-
-exit:
- kfree(buffer);
- return rv;
+ return 0;
}
static int get_capabilities(struct usbtmc_device_data *data)
--
1.7.9.5
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