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spi: zynq_qspi: Typecast rxbuf properly

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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
This commit is contained in:
Siva Durga Prasad Paladugu 2022-01-30 22:22:37 -07:00 committed by Michal Simek
parent 25a91f3005
commit 255537b5ad
1 changed files with 8 additions and 4 deletions
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12
drivers/spi/zynq_qspi.c
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@ -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;