Feature #5354
Updated by Pavel Andrianov over 9 years ago
*Description* DMA map for SCSI command is created by the function _int scsi_dma_map(struct scsi_cmnd *)_ if its first argument is a correct pointer to a structure of SCSI command. A DMA map is destroyed by function _int scsi_dma_unmap(struct scsi_cmnd *)_. If _scsi_dma_map_ returns zero, the _scsi_dma_unmap_ is not necessary, but is not an error as well. The correct usage includes: * unmap only created maps; * create already non existing maps; * cancel all created maps before shutdown of the module. Sample bugfixes "25e8bc0":https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=25e8bc0, "e70f61e":https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=e70f61e