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Wed, 20 Jun 2018 05:18:23 +0000 From: Peter Rosin To: linux-kernel@vger.kernel.org Cc: Peter Rosin , Peter Huewe , Jarkko Sakkinen , Jason Gunthorpe , Arnd Bergmann , Greg Kroah-Hartman , Brian Norris , Gregory Fong , Florian Fainelli , bcm-kernel-feedback-list@broadcom.com, Sekhar Nori , Kevin Hilman , Haavard Skinnemoen , Kukjin Kim , Krzysztof Kozlowski , Orson Zhai , Baolin Wang , Chunyan Zhang , Wolfram Sang , Guenter Roeck , Crt Mori , Jonathan Cameron , Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler , Dmitry Torokhov , Antti Palosaari , Mauro Carvalho Chehab , Michael Krufky , Lee Jones , linux-integrity@vger.kernel.org, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-iio@vger.kernel.org, linux-input@vger.kernel.org, linux-media@vger.kernel.org Subject: [PATCH v2 02/10] i2c: mux: pca9541: switch to i2c_lock_bus(..., I2C_LOCK_SEGMENT) Date: Wed, 20 Jun 2018 07:17:55 +0200 Message-Id: <20180620051803.12206-3-peda@axentia.se> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20180620051803.12206-1-peda@axentia.se> References: <20180620051803.12206-1-peda@axentia.se> MIME-Version: 1.0 X-Originating-IP: [85.226.244.23] X-ClientProxiedBy: HE1PR05CA0127.eurprd05.prod.outlook.com (2603:10a6:7:28::14) To AM5PR0201MB2452.eurprd02.prod.outlook.com (2603:10a6:203:35::9) X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: d6cd1574-88fc-4bed-311d-08d5d66d3fe2 X-Microsoft-Antispam: UriScan:; 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Switch to the finer-grained i2c_lock_bus with the I2C_LOCK_SEGMENT flag. If the device does not sit behind a mux-locked mux, the two locking variants are equivalent. Signed-off-by: Peter Rosin --- drivers/i2c/muxes/i2c-mux-pca9541.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/i2c/muxes/i2c-mux-pca9541.c b/drivers/i2c/muxes/i2c-mux-pca9541.c index 6a39adaf433f..bc7c8cee5a8c 100644 --- a/drivers/i2c/muxes/i2c-mux-pca9541.c +++ b/drivers/i2c/muxes/i2c-mux-pca9541.c @@ -345,11 +345,11 @@ static int pca9541_probe(struct i2c_client *client, /* * I2C accesses are unprotected here. - * We have to lock the adapter before releasing the bus. + * We have to lock the I2C segment before releasing the bus. */ - i2c_lock_adapter(adap); + i2c_lock_bus(adap, I2C_LOCK_SEGMENT); pca9541_release_bus(client); - i2c_unlock_adapter(adap); + i2c_unlock_bus(adap, I2C_LOCK_SEGMENT); /* Create mux adapter */