spi: gpio: Look for a device node instead of match

This driver doesn't do anything with the match for the device node. The
logic is the same as looking to see if a device node exists or not
because this driver wouldn't probe unless there is a device node match
when the device is created from DT. Just test for the presence of the
device node to simplify and avoid referencing a potentially undefined
match table when CONFIG_OF=n.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: <linux-spi@vger.kernel.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20191004214334.149976-9-swboyd@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-gpio.c b/drivers/spi/spi-gpio.c
index 1d3e23e..42f4d82 100644 (file)
--- a/drivers/spi/spi-gpio.c
+++ b/drivers/spi/spi-gpio.c
@@ -362,9 +362,6 @@ static int spi_gpio_probe(struct platform_device *pdev)
        struct spi_gpio                 *spi_gpio;
        struct device                   *dev = &pdev->dev;
        struct spi_bitbang              *bb;
-       const struct of_device_id       *of_id;
-
-       of_id = of_match_device(spi_gpio_dt_ids, &pdev->dev);
 
        master = spi_alloc_master(dev, sizeof(*spi_gpio));
        if (!master)
@@ -374,7 +371,7 @@ static int spi_gpio_probe(struct platform_device *pdev)
        if (status)
                return status;
 
-       if (of_id)
+       if (pdev->dev.of_node)
                status = spi_gpio_probe_dt(pdev, master);
        else
                status = spi_gpio_probe_pdata(pdev, master);