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| author | Milind Choudhary <milindc@codeaurora.org> | 2012-12-12 17:55:28 -0800 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2012-12-17 15:38:15 +0100 |
| commit | 359439d2888fdc3797903963607bb0bbd4582e08 (patch) | |
| tree | 53b04bf80b9d3fbc57b7feb318092048e007bb0a /common/usb.c | |
| parent | b6d7852cf8b7ced786937d3d080956b0c7be9836 (diff) | |
| download | u-boot-imx-359439d2888fdc3797903963607bb0bbd4582e08.zip u-boot-imx-359439d2888fdc3797903963607bb0bbd4582e08.tar.gz u-boot-imx-359439d2888fdc3797903963607bb0bbd4582e08.tar.bz2 | |
usb: Clean up newly allocated device nodes in case of configuration failure
If probe of a newly connected device fails for some reason, clean up
the allocated entry in usb_dev array.
Signed-off-by: Milind Choudhary <milindc@codeaurora.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'common/usb.c')
| -rw-r--r-- | common/usb.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/common/usb.c b/common/usb.c index ac9b4ca..6fc0fc1 100644 --- a/common/usb.c +++ b/common/usb.c @@ -805,6 +805,18 @@ struct usb_device *usb_alloc_new_device(void *controller) return &usb_dev[dev_index - 1]; } +/* + * Free the newly created device node. + * Called in error cases where configuring a newly attached + * device fails for some reason. + */ +void usb_free_device(void) +{ + dev_index--; + USB_PRINTF("Freeing device node: %d\n", dev_index); + memset(&usb_dev[dev_index], 0, sizeof(struct usb_device)); + usb_dev[dev_index].devnum = -1; +} /* * By the time we get here, the device has gotten a new device ID |