spi: mxc_spi: Fix double incrementing read pointer for unaligned buffers

If dout buffer is not 32 bit-aligned or data to transmit is not multiple of 32 bit the read data pointer is already incremented on single byte reads. Signed-off-by: Timo Herbrecher <t.herbrecher@gateware.de> Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>

spi: mxc_spi: Fix double incrementing read pointer for unaligned buffers
If dout buffer is not 32 bit-aligned or data to transmit is not multiple of 32 bit the read data pointer is already incremented on single byte reads. Signed-off-by: Timo Herbrecher <t.herbrecher@gateware.de> Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Timo Herbrecher · Jagannadha Sutradharudu Teki
1 parent 21497ded5d
Showing 1 changed file with 1 additions and 1 deletions Side-by-side Diff
drivers/spi/mxc_spi.c
@@ -255,8 +255,8 @@
 			} else {
 				data = *(u32 *)dout;
 				data = cpu_to_be32(data);
+				dout += 4;
 			}
-			dout += 4;
 		}
 		debug("Sending SPI 0x%x\n", data);
 		reg_write(&regs->txdata, data);
...	...	@@ -255,8 +255,8 @@
255	255	} else {
256	256	data = (u32 )dout;
257	257	data = cpu_to_be32(data);
	258	+ dout += 4;
258	259	}
259		- dout += 4;
260	260	}
261	261	debug("Sending SPI 0x%x\n", data);
262	262	reg_write(&regs->txdata, data);