@@ -1324,7 +1324,7 @@ static int acm_probe(struct usb_interface *intf,
acm = kzalloc(sizeof(struct acm), GFP_KERNEL);
if (acm == NULL)
- goto alloc_fail;
+ return -ENOMEM;
tty_port_init(&acm->port);
acm->port.ops = &acm_port_ops;
@@ -1341,7 +1341,7 @@ static int acm_probe(struct usb_interface *intf,
minor = acm_alloc_minor(acm);
if (minor < 0)
- goto alloc_fail1;
+ goto err_put_port;
acm->minor = minor;
acm->dev = usb_dev;
@@ -1372,15 +1372,15 @@ static int acm_probe(struct usb_interface *intf,
buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
if (!buf)
- goto alloc_fail1;
+ goto err_put_port;
acm->ctrl_buffer = buf;
if (acm_write_buffers_alloc(acm) < 0)
- goto alloc_fail2;
+ goto err_free_ctrl_buffer;
acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL);
if (!acm->ctrlurb)
- goto alloc_fail3;
+ goto err_free_write_buffers;
for (i = 0; i < num_rx_buf; i++) {
struct acm_rb *rb = &(acm->read_buffers[i]);
@@ -1389,13 +1389,13 @@ static int acm_probe(struct usb_interface *intf,
rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL,
&rb->dma);
if (!rb->base)
- goto alloc_fail4;
+ goto err_free_read_urbs;
rb->index = i;
rb->instance = acm;
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb)
- goto alloc_fail4;
+ goto err_free_read_urbs;
urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
urb->transfer_dma = rb->dma;
@@ -1417,7 +1417,7 @@ static int acm_probe(struct usb_interface *intf,
snd->urb = usb_alloc_urb(0, GFP_KERNEL);
if (snd->urb == NULL)
- goto alloc_fail5;
+ goto err_free_write_urbs;
if (usb_endpoint_xfer_int(epwrite))
usb_fill_int_urb(snd->urb, usb_dev, acm->out,
@@ -1435,7 +1435,7 @@ static int acm_probe(struct usb_interface *intf,
i = device_create_file(&intf->dev, &dev_attr_bmCapabilities);
if (i < 0)
- goto alloc_fail5;
+ goto err_free_write_urbs;
if (h.usb_cdc_country_functional_desc) { /* export the country data */
struct usb_cdc_country_functional_desc * cfd =
@@ -1492,7 +1492,7 @@ static int acm_probe(struct usb_interface *intf,
&control_interface->dev);
if (IS_ERR(tty_dev)) {
rv = PTR_ERR(tty_dev);
- goto alloc_fail6;
+ goto err_release_data_interface;
}
if (quirks & CLEAR_HALT_CONDITIONS) {
@@ -1501,7 +1501,8 @@ static int acm_probe(struct usb_interface *intf,
}
return 0;
-alloc_fail6:
+
+err_release_data_interface:
if (!acm->combined_interfaces) {
/* Clear driver data so that disconnect() returns early. */
usb_set_intfdata(data_interface, NULL);
@@ -1514,21 +1515,21 @@ static int acm_probe(struct usb_interface *intf,
&dev_attr_iCountryCodeRelDate);
}
device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
-alloc_fail5:
+err_free_write_urbs:
for (i = 0; i < ACM_NW; i++)
usb_free_urb(acm->wb[i].urb);
-alloc_fail4:
+err_free_read_urbs:
for (i = 0; i < num_rx_buf; i++)
usb_free_urb(acm->read_urbs[i]);
acm_read_buffers_free(acm);
usb_free_urb(acm->ctrlurb);
-alloc_fail3:
+err_free_write_buffers:
acm_write_buffers_free(acm);
-alloc_fail2:
+err_free_ctrl_buffer:
usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
-alloc_fail1:
+err_put_port:
tty_port_put(&acm->port);
-alloc_fail:
+
return rv;
}
Name the probe error labels after what they do rather than using sequence numbers which is harder to review and maintain (e.g. may require renaming unrelated labels when a label is added or removed). Signed-off-by: Johan Hovold <johan@kernel.org> --- drivers/usb/class/cdc-acm.c | 35 ++++++++++++++++++----------------- 1 file changed, 18 insertions(+), 17 deletions(-)