spi: qup: Fix cs-num DT property parsing

num-cs is 32 bit property, don't read just upper 16 bits.

Fixes: 4a8573abe965 (spi: qup: Remove chip select function)
Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org

1 files changed, 5 insertions, 4 deletions

diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c
index ff9cdbdb6672..2b2c359f5a50 100644
--- a/drivers/spi/spi-qup.c
+++ b/drivers/spi/spi-qup.c
@@ -498,7 +498,7 @@ static int spi_qup_probe(struct platform_device *pdev)
         struct resource *res;
         struct device *dev;
         void __iomem *base;
-        u32 max_freq, iomode;
+        u32 max_freq, iomode, num_cs;
         int ret, irq, size;
 
         dev = &pdev->dev;
@@ -550,10 +550,11 @@ static int spi_qup_probe(struct platform_device *pdev)
         }
 
         /* use num-cs unless not present or out of range */
-        if (of_property_read_u16(dev->of_node, "num-cs",
-                        &master->num_chipselect) ||
-                        (master->num_chipselect > SPI_NUM_CHIPSELECTS))
+        if (of_property_read_u32(dev->of_node, "num-cs", &num_cs) ||
+            num_cs > SPI_NUM_CHIPSELECTS)
                 master->num_chipselect = SPI_NUM_CHIPSELECTS;
+        else
+                master->num_chipselect = num_cs;
 
         master->bus_num = pdev->id;
         master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LOOP;