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usb: hcd: do not call whc_clean_up on wch_init call failure 

whc_init already calls whc_clean_up if an error occurs during
the initialization, so calling it again if whc_init fails at
the end of wch_probe will cause double free errors.  Fix this
by bailing out on an whc_init failure to a new label that avoids
doing the duplicated whc_clean_up.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Colin Ian King 2016-03-26 21:03:53 +00:00 committed by Greg Kroah-Hartman
parent 1507372b97
commit 328fafb94f
1 changed files with 4 additions and 3 deletions
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7
drivers/usb/host/whci/hcd.c
View File

@ -257,14 +257,14 @@ static int whc_probe(struct umc_dev *umc)
ret = whc_init(whc);
if (ret)
goto error;
goto error_whc_init;
wusbhc->dev = dev;
wusbhc->uwb_rc = uwb_rc_get_by_grandpa(umc->dev.parent);
if (!wusbhc->uwb_rc) {
ret = -ENODEV;
dev_err(dev, "cannot get radio controller\n");
goto error;
goto error_uwb_rc;
}
if (whc->n_devices > USB_MAXCHILDREN) {
@ -311,8 +311,9 @@ error_usb_add_hcd:
wusbhc_destroy(wusbhc);
error_wusbhc_create:
uwb_rc_put(wusbhc->uwb_rc);
error:
error_uwb_rc:
whc_clean_up(whc);
error_whc_init:
usb_put_hcd(usb_hcd);
return ret;
}