[PATCH 3.18 042/124] target/pscsi: Fix TYPE_TAPE + TYPE_MEDIMUM_CHANGER export

3.18-stable review patch. If anyone has any objections, please let me know. -- From: Nicholas Bellinger commit a04e54f2c35823ca32d56afcd5cea5b783e2f51a upstream. The following fixes a divide by zero OOPs with TYPE_TAPE due to pscsi_tape_read_blocksize()

[PATCH 3.18 042/124] target/pscsi: Fix TYPE_TAPE + TYPE_MEDIMUM_CHANGER export

3.18-stable review patch. If anyone has any objections, please let me know. -- From: Nicholas Bellinger commit a04e54f2c35823ca32d56afcd5cea5b783e2f51a upstream. The following fixes a divide by zero OOPs with TYPE_TAPE due to pscsi_tape_read_blocksize() failing causing a zero