diff options
| author | Simon Glass | 2015-03-25 12:22:01 -0600 |
|---|---|---|
| committer | Simon Glass | 2015-04-18 11:11:20 -0600 |
| commit | 79b5888729b65e7040d6a964f0015fc2c21b2385 (patch) | |
| tree | 3497e7a22e622a32b7f3257682456087b17e409c /common/usb.c | |
| parent | cad4291cd053f8eaa404e47ab289a6169c19ae93 (diff) | |
dm: usb: Adjust usb_alloc_new_device() to return an error
This function returns NULL on error at present. Adjust it so that we can
return a real error, as is needed with driver model. Also improve the
error handling in its caller, usb_hub_port_connect_change(), and adjust
the code order to prepare for driver model.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>
Diffstat (limited to 'common/usb.c')
| -rw-r--r-- | common/usb.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/common/usb.c b/common/usb.c index d94640a99e8..4f3713d92f3 100644 --- a/common/usb.c +++ b/common/usb.c @@ -94,8 +94,8 @@ int usb_init(void) controllers_initialized++; start_index = dev_index; printf("scanning bus %d for devices... ", i); - dev = usb_alloc_new_device(ctrl); - if (!dev) + ret = usb_alloc_new_device(ctrl, &dev); + if (ret) break; /* @@ -104,7 +104,7 @@ int usb_init(void) */ ret = usb_new_device(dev); if (ret) - usb_free_device(); + usb_free_device(dev->controller); if (start_index == dev_index) { puts("No USB Device found\n"); @@ -833,16 +833,13 @@ struct usb_device *usb_get_dev_index(int index) return &usb_dev[index]; } -/* returns a pointer of a new device structure or NULL, if - * no device struct is available - */ -struct usb_device *usb_alloc_new_device(void *controller) +int usb_alloc_new_device(struct udevice *controller, struct usb_device **devp) { int i; debug("New Device %d\n", dev_index); if (dev_index == USB_MAX_DEVICE) { printf("ERROR, too many USB Devices, max=%d\n", USB_MAX_DEVICE); - return NULL; + return -ENOSPC; } /* default Address is 0, real addresses start with 1 */ usb_dev[dev_index].devnum = dev_index + 1; @@ -852,7 +849,9 @@ struct usb_device *usb_alloc_new_device(void *controller) usb_dev[dev_index].parent = NULL; usb_dev[dev_index].controller = controller; dev_index++; - return &usb_dev[dev_index - 1]; + *devp = &usb_dev[dev_index - 1]; + + return 0; } /* @@ -860,7 +859,7 @@ struct usb_device *usb_alloc_new_device(void *controller) * Called in error cases where configuring a newly attached * device fails for some reason. */ -void usb_free_device(void) +void usb_free_device(struct udevice *controller) { dev_index--; debug("Freeing device node: %d\n", dev_index); |