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authentication-results: spf=none (sender IP is ) smtp.mailfrom=Alexander.Levin@microsoft.com; x-microsoft-antispam-message-info: MTZ0yBgABJsGiuY4ca+DNj3Ebshjn3WGKYt7hO43eMEY25MCQa6Pm4KWSPFkbnz5X0ph6yX/HWku7zn5Su4HTX8cQcoxRMMXZL1upoXQupfW9aHPd+R+pyLHJrnL+Y3QDnFFrHJ3xmD6Q1e1yHnNJyflpFJckAuCGrD+3bSinmVLfB8bsNCIqH4aMuBgZ9EoFihnP6tQ9LaOLXd/T2yNyhmnEkONYti0+kk2S4Q5Oba06UynxmucQ9adsdKTcaxPJKEGyz1nwFjPBhD5TYUHJvKDCxUgHmgz5FUIidnvhcHJ/AzqI6ucXgyPMxcWtPfq+lmEIxSaKMXIoP5gsLlUfg== spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 3e66ad8e-8421-419c-2c93-08d58db28fef X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Mar 2018 15:59:40.8367 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB0933 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Tin Huynh [ Upstream commit aace34c0bb8ea3c8bdcec865b6a4be4db0a68e33 ] The driver checks an incorrect flag of functionality of adapter. When a driver requires i2c_smbus_read_byte_data and i2c_smbus_write_byte_data, it should check I2C_FUNC_SMBUS_BYTE_DATA instead I2C_FUNC_I2C. This patch fixes the problem. Signed-off-by: Tin Huynh Signed-off-by: Jacek Anaszewski Signed-off-by: Sasha Levin --- drivers/leds/leds-pca955x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/leds/leds-pca955x.c b/drivers/leds/leds-pca955x.c index 840401ae9a4e..f6726484a8a1 100644 --- a/drivers/leds/leds-pca955x.c +++ b/drivers/leds/leds-pca955x.c @@ -266,7 +266,7 @@ static int pca955x_probe(struct i2c_client *client, "slave address 0x%02x\n", id->name, chip->bits, client->addr); =20 - if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) return -EIO; =20 if (pdata) { --=20 2.14.1