From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755017Ab3BFRBv (ORCPT ); Wed, 6 Feb 2013 12:01:51 -0500 Received: from atlantis.wh2.tu-dresden.de ([141.30.228.39]:34906 "EHLO atlantis.wh2.tu-dresden.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750716Ab3BFRBr (ORCPT ); Wed, 6 Feb 2013 12:01:47 -0500 From: Lars Poeschel To: poeschel@lemonage.de, grant.likely@secretlab.ca, rob.herring@calxeda.com, rob@landley.net, linus.walleij@linaro.org, devicetree-discuss@lists.ozlabs.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, spi-devel-general@lists.sourceforge.net Cc: w.sang@pengutronix.de, ben-linux@fluff.org, linux-i2c@vger.kernel.org Subject: [PATCH 1/2] gpio: mcp23s08: Allow -1 as a legal value for global gpio base Date: Wed, 6 Feb 2013 18:01:57 +0100 Message-Id: <1360170118-11937-2-git-send-email-larsi@wh2.tu-dresden.de> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1360170118-11937-1-git-send-email-larsi@wh2.tu-dresden.de> References: <1360170118-11937-1-git-send-email-larsi@wh2.tu-dresden.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Lars Poeschel Explicitly allow -1 as a legal value for the mcp23s08_platform_data->base. This is the special value lets the kernel choose a valid global gpio base number. Signed-off-by: Lars Poeschel --- drivers/gpio/gpio-mcp23s08.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpio/gpio-mcp23s08.c b/drivers/gpio/gpio-mcp23s08.c index 3cea0ea..2afb828 100644 --- a/drivers/gpio/gpio-mcp23s08.c +++ b/drivers/gpio/gpio-mcp23s08.c @@ -483,7 +483,7 @@ static int mcp230xx_probe(struct i2c_client *client, int status; pdata = client->dev.platform_data; - if (!pdata || !gpio_is_valid(pdata->base)) { + if ((!pdata || !gpio_is_valid(pdata->base)) && pdata->base != -1) { dev_dbg(&client->dev, "invalid or missing platform data\n"); return -EINVAL; } @@ -570,7 +570,7 @@ static int mcp23s08_probe(struct spi_device *spi) type = spi_get_device_id(spi)->driver_data; pdata = spi->dev.platform_data; - if (!pdata || !gpio_is_valid(pdata->base)) { + if ((!pdata || !gpio_is_valid(pdata->base)) && pdata->base != -1) { dev_dbg(&spi->dev, "invalid or missing platform data\n"); return -EINVAL; } -- 1.7.10.4