spi: sprd: Make sure offset not equal to slave address size

The slave register offset shouldn't equal to the max slave address
which ADI can support to access.

Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Link: https://lore.kernel.org/r/20210824070212.2089255-2-zhang.lyra@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-sprd-adi.c b/drivers/spi/spi-sprd-adi.c
index abdad1e..06af519 100644 (file)
--- a/drivers/spi/spi-sprd-adi.c
+++ b/drivers/spi/spi-sprd-adi.c
@@ -119,7 +119,7 @@ struct sprd_adi {
 
 static int sprd_adi_check_addr(struct sprd_adi *sadi, u32 reg)
 {
-       if (reg > ADI_SLAVE_ADDR_SIZE) {
+       if (reg >= ADI_SLAVE_ADDR_SIZE) {
                dev_err(sadi->dev,
                        "slave address offset is incorrect, reg = 0x%x\n",
                        reg);