Fix pointer aliasing warning in the Mass Storage demos.

[pub/USBasp.git] / Demos / Device / LowLevel / MassStorage / Lib / SCSI.c

diff --git a/Demos/Device/LowLevel/MassStorage/Lib/SCSI.c b/Demos/Device/LowLevel/MassStorage/Lib/SCSI.c
index 111c3b7..46c71c3 100644 (file)
--- a/Demos/Device/LowLevel/MassStorage/Lib/SCSI.c
+++ b/Demos/Device/LowLevel/MassStorage/Lib/SCSI.c
@@ -136,8 +136,7 @@ bool SCSI_DecodeSCSICommand(void)
  */
 static void SCSI_Command_Inquiry(void)
 {
-       uint16_t AllocationLength  = (((uint16_t)CommandBlock.SCSICommandData[3] << 8) |
-                                                CommandBlock.SCSICommandData[4]);
+       uint16_t AllocationLength  = SwapEndian_16(*(uint32_t*)&CommandBlock.SCSICommandData[3]);
        uint16_t BytesTransferred  = (AllocationLength < sizeof(InquiryData))? AllocationLength :
                                                                               sizeof(InquiryData);
 
@@ -260,7 +259,7 @@ static void SCSI_Command_ReadWrite_10(const bool IsDataRead)
        BlockAddress = SwapEndian_32(*(uint32_t*)&CommandBlock.SCSICommandData[2]);
 
        /* Load in the 16-bit total blocks (SCSI uses big-endian, so have to reverse the byte order) */
-       TotalBlocks  = SwapEndian_16(*(uint16_t*)&CommandBlock.SCSICommandData[7]);
+       TotalBlocks  = SwapEndian_16(*(uint32_t*)&CommandBlock.SCSICommandData[7]);
 
        /* Check if the block address is outside the maximum allowable value for the LUN */
        if (BlockAddress >= LUN_MEDIA_BLOCKS)