On Sun, 2006-04-02 at 21:57 +0200, Guennadi Liakhovetski wrote:
> + if (fc == 0x40 &&
> (srb->dcb->sync_period & WIDE_SYNC)) {
> + /* Read the last byte ... */
> + if (srb->total_xfer_length >
> 0) {
> + u8 byte =
> DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
> +
> + *virt++ = byte;
> + srb->total_xfer_length--;
> + if
> (debug_enabled(DBG_PIO))
> + printk(" %
> 02x", byte);
> + }
> +
> + DC395x_write8(acb,
> TRM_S1040_SCSI_CONFIG2, 0);
> + }
> +
> + if (srb->cmd->use_sg) {
> + scsi_kunmap_atomic_sg(base);
I put this in, but just a warning here. You're modifying a kmapped
page, so you need to call flush_kernel_dcache_page() before unmapping it
otherwise user space may not see the change on VIPT or VIVT CPU (the
data may be in a non congruent cache line).
James
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