diff options
Diffstat (limited to 'drivers/scsi/aha1542.c')
| -rw-r--r-- | drivers/scsi/aha1542.c | 32 |
1 files changed, 15 insertions, 17 deletions
diff --git a/drivers/scsi/aha1542.c b/drivers/scsi/aha1542.c index cbbfbc9f3e0..961a1882cb7 100644 --- a/drivers/scsi/aha1542.c +++ b/drivers/scsi/aha1542.c @@ -61,15 +61,15 @@ static void BAD_DMA(void *address, unsigned int length) } static void BAD_SG_DMA(Scsi_Cmnd * SCpnt, - struct scatterlist *sgpnt, + struct scatterlist *sgp, int nseg, int badseg) { printk(KERN_CRIT "sgpnt[%d:%d] page %p/0x%llx length %u\n", badseg, nseg, - page_address(sgpnt[badseg].page) + sgpnt[badseg].offset, - (unsigned long long)SCSI_SG_PA(&sgpnt[badseg]), - sgpnt[badseg].length); + page_address(sgp->page) + sgp->offset, + (unsigned long long)SCSI_SG_PA(sgp), + sgp->length); /* * Not safe to continue. @@ -691,7 +691,7 @@ static int aha1542_queuecommand(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *)) memcpy(ccb[mbo].cdb, cmd, ccb[mbo].cdblen); if (SCpnt->use_sg) { - struct scatterlist *sgpnt; + struct scatterlist *sg; struct chain *cptr; #ifdef DEBUG unsigned char *ptr; @@ -699,23 +699,21 @@ static int aha1542_queuecommand(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *)) int i; ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */ SCpnt->host_scribble = kmalloc(512, GFP_KERNEL | GFP_DMA); - sgpnt = (struct scatterlist *) SCpnt->request_buffer; cptr = (struct chain *) SCpnt->host_scribble; if (cptr == NULL) { /* free the claimed mailbox slot */ HOSTDATA(SCpnt->device->host)->SCint[mbo] = NULL; return SCSI_MLQUEUE_HOST_BUSY; } - for (i = 0; i < SCpnt->use_sg; i++) { - if (sgpnt[i].length == 0 || SCpnt->use_sg > 16 || - (((int) sgpnt[i].offset) & 1) || (sgpnt[i].length & 1)) { + scsi_for_each_sg(SCpnt, sg, SCpnt->use_sg, i) { + if (sg->length == 0 || SCpnt->use_sg > 16 || + (((int) sg->offset) & 1) || (sg->length & 1)) { unsigned char *ptr; printk(KERN_CRIT "Bad segment list supplied to aha1542.c (%d, %d)\n", SCpnt->use_sg, i); - for (i = 0; i < SCpnt->use_sg; i++) { + scsi_for_each_sg(SCpnt, sg, SCpnt->use_sg, i) { printk(KERN_CRIT "%d: %p %d\n", i, - (page_address(sgpnt[i].page) + - sgpnt[i].offset), - sgpnt[i].length); + (page_address(sg->page) + + sg->offset), sg->length); }; printk(KERN_CRIT "cptr %x: ", (unsigned int) cptr); ptr = (unsigned char *) &cptr[i]; @@ -723,10 +721,10 @@ static int aha1542_queuecommand(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *)) printk("%02x ", ptr[i]); panic("Foooooooood fight!"); }; - any2scsi(cptr[i].dataptr, SCSI_SG_PA(&sgpnt[i])); - if (SCSI_SG_PA(&sgpnt[i]) + sgpnt[i].length - 1 > ISA_DMA_THRESHOLD) - BAD_SG_DMA(SCpnt, sgpnt, SCpnt->use_sg, i); - any2scsi(cptr[i].datalen, sgpnt[i].length); + any2scsi(cptr[i].dataptr, SCSI_SG_PA(sg)); + if (SCSI_SG_PA(sg) + sg->length - 1 > ISA_DMA_THRESHOLD) + BAD_SG_DMA(SCpnt, sg, SCpnt->use_sg, i); + any2scsi(cptr[i].datalen, sg->length); }; any2scsi(ccb[mbo].datalen, SCpnt->use_sg * sizeof(struct chain)); any2scsi(ccb[mbo].dataptr, SCSI_BUF_PA(cptr)); |