Merge branch 'drm-intel-next' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt...

[safe/jmp/linux-2.6] / drivers / gpio / mcp23s08.c

diff --git a/drivers/gpio/mcp23s08.c b/drivers/gpio/mcp23s08.c
index 8a1b405..f6fae0e 100644 (file)
--- a/drivers/gpio/mcp23s08.c
+++ b/drivers/gpio/mcp23s08.c
@@ -310,8 +310,10 @@ static int mcp23s08_probe(struct spi_device *spi)
        unsigned                        base;
 
        pdata = spi->dev.platform_data;
-       if (!pdata || !gpio_is_valid(pdata->base))
-               return -ENODEV;
+       if (!pdata || !gpio_is_valid(pdata->base)) {
+               dev_dbg(&spi->dev, "invalid or missing platform data\n");
+               return -EINVAL;
+       }
 
        for (addr = 0; addr < 4; addr++) {
                if (!pdata->chip[addr].is_present)
@@ -419,7 +421,10 @@ static int __init mcp23s08_init(void)
 {
        return spi_register_driver(&mcp23s08_driver);
 }
-module_init(mcp23s08_init);
+/* register after spi postcore initcall and before
+ * subsys initcalls that may rely on these GPIOs
+ */
+subsys_initcall(mcp23s08_init);
 
 static void __exit mcp23s08_exit(void)
 {