From b184c388f773f30b6c707d3d4599b2db80f4390c Mon Sep 17 00:00:00 2001 From: Sonic Zhang Date: Tue, 20 Jan 2015 17:00:08 +0800 Subject: [PATCH] gpio: mcp23s08: handle default gpio base Create default gpio base if neither device node nor platform data is defined. Cc: Stable Signed-off-by: Sonic Zhang Reviewed-by: Alexandre Courbot Tested-by: Antonio Fiol Signed-off-by: Linus Walleij --- drivers/gpio/gpio-mcp23s08.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/drivers/gpio/gpio-mcp23s08.c b/drivers/gpio/gpio-mcp23s08.c index da9c316059bc..eea5d7e578c9 100644 --- a/drivers/gpio/gpio-mcp23s08.c +++ b/drivers/gpio/gpio-mcp23s08.c @@ -801,9 +801,11 @@ static int mcp230xx_probe(struct i2c_client *client, client->irq = irq_of_parse_and_map(client->dev.of_node, 0); } else { pdata = dev_get_platdata(&client->dev); - if (!pdata || !gpio_is_valid(pdata->base)) { - dev_dbg(&client->dev, "invalid platform data\n"); - return -EINVAL; + if (!pdata) { + pdata = devm_kzalloc(&client->dev, + sizeof(struct mcp23s08_platform_data), + GFP_KERNEL); + pdata->base = -1; } } @@ -924,10 +926,11 @@ static int mcp23s08_probe(struct spi_device *spi) } else { type = spi_get_device_id(spi)->driver_data; pdata = dev_get_platdata(&spi->dev); - if (!pdata || !gpio_is_valid(pdata->base)) { - dev_dbg(&spi->dev, - "invalid or missing platform data\n"); - return -EINVAL; + if (!pdata) { + pdata = devm_kzalloc(&spi->dev, + sizeof(struct mcp23s08_platform_data), + GFP_KERNEL); + pdata->base = -1; } for (addr = 0; addr < ARRAY_SIZE(pdata->chip); addr++) { -- 2.30.2