spi: spi-nxp-fspi: Fix a NULL vs IS_ERR() check in probe

The platform_get_resource_byname() function returns NULL on error, it
doesn't return error pointers.

Fixes: d166a73503ef ("spi: fspi: dynamically alloc AHB memory")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20200312113154.GC20562@mwanda
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-nxp-fspi.c b/drivers/spi/spi-nxp-fspi.c
index 019f40e..1ccda82 100644 (file)
--- a/drivers/spi/spi-nxp-fspi.c
+++ b/drivers/spi/spi-nxp-fspi.c
@@ -1019,8 +1019,8 @@ static int nxp_fspi_probe(struct platform_device *pdev)
 
        /* find the resources - controller memory mapped space */
        res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "fspi_mmap");
-       if (IS_ERR(res)) {
-               ret = PTR_ERR(res);
+       if (!res) {
+               ret = -ENODEV;
                goto err_put_ctrl;
        }