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Wed, 19 Sep 2018 13:17:58 +0000 From: =?UTF-8?q?Michal=20Vok=C3=A1=C4=8D?= To: Bartlomiej Zolnierkiewicz , Shawn Guo Cc: Fabio Estevam , Rob Herring , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fbdev@vger.kernel.org, =?UTF-8?q?Michal=20Vok=C3=A1=C4=8D?= Subject: [PATCH v2 1/3] video: ssd1307fb: Use gpiod_set_value_cansleep() for reset Date: Wed, 19 Sep 2018 15:17:27 +0200 Message-Id: <1537363049-48399-1-git-send-email-michal.vokac@ysoft.com> X-Mailer: git-send-email 2.1.4 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Originating-IP: [89.24.100.190] X-ClientProxiedBy: AM5PR0602CA0003.eurprd06.prod.outlook.com (2603:10a6:203:a3::13) To DB7PR04MB4666.eurprd04.prod.outlook.com (2603:10a6:5:37::12) X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: cd29e52f-2663-44f8-dbfb-08d61e325216 X-Microsoft-Antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(8989299)(4534165)(4627221)(201703031133081)(201702281549075)(8990200)(5600074)(711020)(2017052603328)(7153060)(7193020);SRVR:DB7PR04MB4666; 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In that case the probe function fails. Allow using GPIO expanders for the reset signal by using the non-atomic gpiod_set_value_cansleep() function. Signed-off-by: Michal Vokáč --- v2 changes: none drivers/video/fbdev/ssd1307fb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c index ba66c02..e7ae135 100644 --- a/drivers/video/fbdev/ssd1307fb.c +++ b/drivers/video/fbdev/ssd1307fb.c @@ -728,9 +728,9 @@ static int ssd1307fb_probe(struct i2c_client *client, if (par->reset) { /* Reset the screen */ - gpiod_set_value(par->reset, 0); + gpiod_set_value_cansleep(par->reset, 0); udelay(4); - gpiod_set_value(par->reset, 1); + gpiod_set_value_cansleep(par->reset, 1); udelay(4); } -- 2.1.4