fdt_first_subnode() returns -FDT_ERR_NOTFOUND if no subnode found.
0 is supposed to be a valid offset returns from fdt_first_subnode().

Signed-off-by: Axel Lin <axel....@ingics.com>
---
 drivers/spi/cadence_qspi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/cadence_qspi.c b/drivers/spi/cadence_qspi.c
index fa95b19..98ae3b8 100644
--- a/drivers/spi/cadence_qspi.c
+++ b/drivers/spi/cadence_qspi.c
@@ -297,7 +297,7 @@ static int cadence_spi_ofdata_to_platdata(struct udevice 
*bus)
 
        /* All other paramters are embedded in the child node */
        subnode = fdt_first_subnode(blob, node);
-       if (!subnode) {
+       if (subnode < 0) {
                printf("Error: subnode with SPI flash config missing!\n");
                return -ENODEV;
        }
-- 
1.9.1



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