spi: zynq_qspi: Typecast rxbuf properly
This patch typecasts and accesses rx buf properly as
an unaligned rxbuf, typecasting with u16 and accessing
it causes data abort exception and this patch fixes it.
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/20220131052240.23403-2-ashok.reddy.soma@xilinx.com
diff --git a/drivers/spi/zynq_qspi.c b/drivers/spi/zynq_qspi.c
index cf6da53..34d39d6 100644
--- a/drivers/spi/zynq_qspi.c
+++ b/drivers/spi/zynq_qspi.c
@@ -230,12 +230,16 @@
priv->rx_buf += 1;
break;
case 2:
- *((u16 *)priv->rx_buf) = data;
- priv->rx_buf += 2;
+ *((u8 *)priv->rx_buf) = data;
+ priv->rx_buf += 1;
+ *((u8 *)priv->rx_buf) = (u8)(data >> 8);
+ priv->rx_buf += 1;
break;
case 3:
- *((u16 *)priv->rx_buf) = data;
- priv->rx_buf += 2;
+ *((u8 *)priv->rx_buf) = data;
+ priv->rx_buf += 1;
+ *((u8 *)priv->rx_buf) = (u8)(data >> 8);
+ priv->rx_buf += 1;
byte3 = (u8)(data >> 16);
*((u8 *)priv->rx_buf) = byte3;
priv->rx_buf += 1;