mtd: nand: mtk: fix error return code in mtk_ecc_probe()

platform_get_irq() returns an error code, but the mtk_ecc driver
ignores it and always returns -EINVAL. This is not correct and,
prevents -EPROBE_DEFER from being propagated properly.

Print and propagate the return value of platform_get_irq on failure.

This issue was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>

diff --git a/drivers/mtd/nand/mtk_ecc.c b/drivers/mtd/nand/mtk_ecc.c
index 6c3a4aab0b487114181c000ff4c068d3c17329f8..7f3b065b6b8fe7bfcc5e5c20a55262cb8d4a95c9 100644 (file)
--- a/drivers/mtd/nand/mtk_ecc.c
+++ b/drivers/mtd/nand/mtk_ecc.c
@@ -464,8 +464,8 @@ static int mtk_ecc_probe(struct platform_device *pdev)
 
        irq = platform_get_irq(pdev, 0);
        if (irq < 0) {
-               dev_err(dev, "failed to get irq\n");
-               return -EINVAL;
+               dev_err(dev, "failed to get irq: %d\n", irq);
+               return irq;
        }
 
        ret = dma_set_mask(dev, DMA_BIT_MASK(32));