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usb: chipdea: core: fix return -EINVAL if request role is the same with current role

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It should not return -EINVAL if the request role is the same with current
role, return non-error and without do anything instead.

Fixes: a932a8041f ("usb: chipidea: core: add sysfs group")
cc: <stable@vger.kernel.org>
Acked-by: Peter Chen <peter.chen@kernel.org>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Link: https://lore.kernel.org/r/20230317061516.2451728-1-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Xu Yang 2023-03-17 14:15:15 +08:00 committed by Greg Kroah-Hartman
parent bbefb7ed83
commit 3670de8067
1 changed files with 4 additions and 1 deletions
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5
drivers/usb/chipidea/core.c
View file

@ -984,9 +984,12 @@ static ssize_t role_store(struct device *dev,
strlen(ci->roles[role]->name)))
break;
if (role == CI_ROLE_END || role == ci->role)
if (role == CI_ROLE_END)
return -EINVAL;
if (role == ci->role)
return n;
pm_runtime_get_sync(dev);
disable_irq(ci->irq);
ci_role_stop(ci);