diff mbox series

[1/4] spi: zynq_qspi: Typecast rxbuf properly

Message ID 20220131052240.23403-2-ashok.reddy.soma@xilinx.com
State Accepted
Commit 255537b5adbdfa9eb0fe750c79ad089e7c0e3990
Delegated to: Michal Simek
Headers show
Series Zynq qspi updates | expand

Commit Message

Ashok Reddy Soma Jan. 31, 2022, 5:22 a.m. UTC 
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 mbox series

Patch

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;