[PATCH] spi: sifive: check return value for platform_get_resource()

[Aurabindo Jayamohanan]

platform_get_resource() may return NULL. If it is so, return -ENXIO

Signed-off-by: Aurabindo Jayamohanan <m...@aurabindo.in>
---
 drivers/spi/spi-sifive.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/spi/spi-sifive.c b/drivers/spi/spi-sifive.c
index 93ec2c6cdbfd..67485067a694 100644
--- a/drivers/spi/spi-sifive.c
+++ b/drivers/spi/spi-sifive.c
@@ -308,6 +308,12 @@ static int sifive_spi_probe(struct platform_device *pdev)
        platform_set_drvdata(pdev, master);
 
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+       if (!res) {
+               dev_err(&pdev->dev, "no IOMEM resource found\n");
+               ret = -ENXIO;
+               goto put_master;
+       }
+
        spi->regs = devm_ioremap_resource(&pdev->dev, res);
        if (IS_ERR(spi->regs)) {
                ret = PTR_ERR(spi->regs);
-- 
2.23.0