From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wolfram Sang Subject: [RFC/RFT 02/10] i2c: reject new transfers when adapters are suspended Date: Mon, 10 Dec 2018 22:03:00 +0100 Message-ID: <20181210210310.12677-3-wsa+renesas@sang-engineering.com> References: <20181210210310.12677-1-wsa+renesas@sang-engineering.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20181210210310.12677-1-wsa+renesas@sang-engineering.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: linux-i2c@vger.kernel.org Cc: Wolfram Sang , linux-pm@vger.kernel.org, Wolfram Sang , linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Hans de Goede , linux-arm-kernel@lists.infradead.org List-Id: linux-i2c@vger.kernel.org Using the new 'is_suspended' flag, we now reject new transfers if the adapter is already marked suspended. Signed-off-by: Wolfram Sang --- drivers/i2c/i2c-core-base.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c index 9f89e258c8ff..5b2078a902f8 100644 --- a/drivers/i2c/i2c-core-base.c +++ b/drivers/i2c/i2c-core-base.c @@ -1866,6 +1866,8 @@ int __i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) if (WARN_ON(!msgs || num < 1)) return -EINVAL; + if (WARN_ON(adap->is_suspended)) + return -ESHUTDOWN; if (adap->quirks && i2c_check_for_quirks(adap, msgs, num)) return -EOPNOTSUPP; -- 2.11.0