From: Siva Durga Prasad Paladugu siva.durga.paladugu@xilinx.com
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 ---
drivers/spi/zynq_qspi.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/spi/zynq_qspi.c b/drivers/spi/zynq_qspi.c index cf6da5340a..34d39d66fb 100644 --- a/drivers/spi/zynq_qspi.c +++ b/drivers/spi/zynq_qspi.c @@ -230,12 +230,16 @@ static void zynq_qspi_read_data(struct zynq_qspi_priv *priv, u32 data, u8 size) 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;