diff options
| author | Siva Durga Prasad Paladugu | 2022-01-30 22:22:38 -0700 |
|---|---|---|
| committer | Michal Simek | 2022-02-04 13:20:12 +0100 |
| commit | a5a387a421105e671ee86a257eccf4d68aa1e7e7 (patch) | |
| tree | c00ab3bca2b6069e866c91eeed453128ed4c2388 /drivers/spi | |
| parent | 255537b5adbdfa9eb0fe750c79ad089e7c0e3990 (diff) | |
spi: zynq_qspi: Read only one byte at a time from txbuf
Read only one byte at a time from txbuf as txbuf may not be
aligned and accessing more than a byte at a time may cause
alignment issues. This fixes the issue of data abort exception
while writing to flash device.
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/20220131052240.23403-3-ashok.reddy.soma@xilinx.com
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/zynq_qspi.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/spi/zynq_qspi.c b/drivers/spi/zynq_qspi.c index 34d39d66fb1..aa060d7940a 100644 --- a/drivers/spi/zynq_qspi.c +++ b/drivers/spi/zynq_qspi.c @@ -276,13 +276,17 @@ static void zynq_qspi_write_data(struct zynq_qspi_priv *priv, *data |= 0xFFFFFF00; break; case 2: - *data = *((u16 *)priv->tx_buf); - priv->tx_buf += 2; + *data = *((u8 *)priv->tx_buf); + priv->tx_buf += 1; + *data |= (*((u8 *)priv->tx_buf) << 8); + priv->tx_buf += 1; *data |= 0xFFFF0000; break; case 3: - *data = *((u16 *)priv->tx_buf); - priv->tx_buf += 2; + *data = *((u8 *)priv->tx_buf); + priv->tx_buf += 1; + *data |= (*((u8 *)priv->tx_buf) << 8); + priv->tx_buf += 1; *data |= (*((u8 *)priv->tx_buf) << 16); priv->tx_buf += 1; *data |= 0xFF000000; |