spi: tegra20-sflash: fix to check return value of platform_get_irq() in tegra_sflash_...

The platform_get_irq might be failed and return a negative result. So
there should have an error handling code.

Fixed this by adding an error handling code.

Fixes: 8528547bcc33 ("spi: tegra: add spi driver for sflash controller")
Signed-off-by: Zhang Shurong <zhang_shurong@foxmail.com>
Link: https://lore.kernel.org/r/tencent_71FC162D589E4788C2152AAC84CD8D5C6D06@qq.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-tegra20-sflash.c b/drivers/spi/spi-tegra20-sflash.c
index 4286310628a2bdf868f1d75058d7568dd6363cc8..0c5507473f97220770eaf7b312c4084db8e51d68 100644 (file)
--- a/drivers/spi/spi-tegra20-sflash.c
+++ b/drivers/spi/spi-tegra20-sflash.c
@@ -455,7 +455,11 @@ static int tegra_sflash_probe(struct platform_device *pdev)
                goto exit_free_master;
        }
 
-       tsd->irq = platform_get_irq(pdev, 0);
+       ret = platform_get_irq(pdev, 0);
+       if (ret < 0)
+               goto exit_free_master;
+       tsd->irq = ret;
+
        ret = request_irq(tsd->irq, tegra_sflash_isr, 0,
                        dev_name(&pdev->dev), tsd);
        if (ret < 0) {