From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Thu, 13 Oct 2016 08:30:39 +0000 (+0300)
Subject: mtd: spi-nor: Fix some error codes in cqspi_setup_flash()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=10ad1d754a434c024ce7eeb1cec9f69fd3ecc863;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

mtd: spi-nor: Fix some error codes in cqspi_setup_flash()

We return success or possibly uninitialized values on these error paths
instead of proper error codes.

Fixes: 140623410536 ("mtd: spi-nor: Add driver for Cadence Quad SPI Flash Controller")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Moritz Fischer <moritz.fischer@ettus.com>
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
---

diff --git a/drivers/mtd/spi-nor/cadence-quadspi.c b/drivers/mtd/spi-nor/cadence-quadspi.c
index 944863be0320..d489fbd07c12 100644
--- a/drivers/mtd/spi-nor/cadence-quadspi.c
+++ b/drivers/mtd/spi-nor/cadence-quadspi.c
@@ -1077,12 +1077,14 @@ static int cqspi_setup_flash(struct cqspi_st *cqspi, struct device_node *np)
 
 	/* Get flash device data */
 	for_each_available_child_of_node(dev->of_node, np) {
-		if (of_property_read_u32(np, "reg", &cs)) {
+		ret = of_property_read_u32(np, "reg", &cs);
+		if (ret) {
 			dev_err(dev, "Couldn't determine chip select.\n");
 			goto err;
 		}
 
 		if (cs >= CQSPI_MAX_CHIPSELECT) {
+			ret = -EINVAL;
 			dev_err(dev, "Chip select %d out of range.\n", cs);
 			goto err;
 		}