[U-Boot] [PATCH] spi: cadence_qspi: Fix checking return value of fdt_first_subnode()

[Axel Lin]

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.lin at 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