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Fri, 17 Mar 2023 06:13:49 +0000 From: Xu Yang To: peter.chen@kernel.org Cc: gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, linux-imx@nxp.com, jun.li@nxp.com, xu.yang_2@nxp.com Subject: [PATCH v3 1/2] usb: chipdea: core: fix return -EINVAL if request role is the same with current role Date: Fri, 17 Mar 2023 14:15:15 +0800 Message-Id: <20230317061516.2451728-1-xu.yang_2@nxp.com> X-Mailer: git-send-email 2.34.1 X-ClientProxiedBy: SI2PR01CA0009.apcprd01.prod.exchangelabs.com (2603:1096:4:191::18) To DB7PR04MB4505.eurprd04.prod.outlook.com (2603:10a6:5:39::26) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DB7PR04MB4505:EE_|DBAPR04MB7366:EE_ X-MS-Office365-Filtering-Correlation-Id: 4dba8294-bbbb-425b-53e7-08db26aec61d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: MAN3ECxjYiqtEqG+abeYLigWrQb2XjLijpmnnL7/8SQf1DxzjWd6qXqjk9jCf5jAayUADZgk2YoniBF3nnetO7n2YV3CqSq20akZMIZJFq99q4Qqk3GfWAWDW5YOx00rfkE1mcPYnm6OlrUFsmpneP0zkdKAKJ/7RTq5Qtb1MtfvT3vKn3riaLh0YnP5Wz1G6AwgiDG+X3S9jFJRk4fLfpMUw2fcX18XSMjelpFmV5AJmBLHgjPpxU4cPAsl75vQzpZQdj2ztEZHHQ79kM02KmbZKxJg1ReNQbXfKYuCkSyjzFpPI9L9v6i2DgrwBNkvJez1G/jpyHTRkxvjQrlt98ZRw/ywKFHFYPXiTyeSBoR8uehRmE8PggWVLPTLmSOls2ZDqy6lLlTEUMmrqV+s0cg3cGjHiIjk/p4VY3Cx6cUboHf+7HOV50QtV+pC8Fqrxd6VZBH4nj15A+NnSgQca3ZGoo42jxVFXc5LEIBwNb8DuSrN5WyxfCxFfpd5QvQ59uORmYmjkN4HgN64sTzUA9tpcHcK8svRmdT2G19c3cI512tdo6QcR/IRTXjCGR7DZHqV1Js0z5QMM8vdGgsoUxx05pmfv6aZ0jia/otZvfue8d8LQEujxuaW2SeDNqPNtfrZQTRmRMDjD+WzOpAhP+jTPJy3ooDPgZvzJ2ZgdkcGhhNDa1usM2Xx8j679SwdpV5jVeBR34pjd9kCA0tJMg== X-Forefront-Antispam-Report: CIP:255.255.255.255; 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Fixes: a932a8041ff9 ("usb: chipidea: core: add sysfs group") cc: Acked-by: Peter Chen Signed-off-by: Xu Yang --- changes since v1: - no change changes since v2: - add acked-by tag --- drivers/usb/chipidea/core.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 7ccb223ed53c..eae4bf865a8e 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -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);