spi: pl022: don't use uninitialized variable

The num-cs property is a required property according to the binding
documentation.  However, if it is not present, the driver currently
simply uses random junk from the stack for the num-cs since the variable
whose pointer is passed to of_property_read_u32() is not initialized.

Signed-off-by: Rabin Vincent <[email protected]>
Signed-off-by: Mark Brown <[email protected]>

diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c
index f7f7ba17b40e97597ae76d2f7e58fae3844ec6ef..2f76e022cc590093518d3c6785830e218d92b9cc 100644 (file)
--- a/drivers/spi/spi-pl022.c
+++ b/drivers/spi/spi-pl022.c
@@ -2074,7 +2074,7 @@ pl022_platform_data_dt_get(struct device *dev)
 {
        struct device_node *np = dev->of_node;
        struct pl022_ssp_controller *pd;
-       u32 tmp;
+       u32 tmp = 0;
 
        if (!np) {
                dev_err(dev, "no dt node defined\n");