The error mesage is  "nand_erase: Unaligned address";


Change Like this:

 __u32 addr;
 if(dev->inbandTags) {
  addr =
     ((loff_t) blockNumber) * dev->totalBytesPerChunk
  * dev->nChunksPerBlock;
 }
 else {
  addr =
     ((loff_t) blockNumber) * dev->nDataBytesPerChunk
  * dev->nChunksPerBlock;
 }




if(dev->inbandTags){

  ei.len = dev->totalBytesPerChunk * dev->nChunksPerBlock;

 }
 else {
 ei.len = dev->nDataBytesPerChunk * dev->nChunksPerBlock;
 }



Is there someone else found this problem