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authorFinn Thain <fthain@telegraphics.com.au>2014-11-12 16:12:20 +1100
committerChristoph Hellwig <hch@lst.de>2014-11-20 09:11:19 +0100
commit61d739a4976424af0d2a62d8e8d0b2159702fb45 (patch)
tree1a65ddf3e88a58b794cfdf7e2ad4bb7ffeabdd0a /drivers/scsi/atari_NCR5380.c
parentca513fc948e66ecdd3c75cca9371762bb4c06776 (diff)
atari_NCR5380: Move static TagAlloc array to host data
The atari_NCR5380.c core driver keeps some per-host data in a static variable which limits the driver to a single instance. Fix this by moving TagAlloc to the hostdata struct. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi/atari_NCR5380.c')
-rw-r--r--drivers/scsi/atari_NCR5380.c27
1 files changed, 9 insertions, 18 deletions
diff --git a/drivers/scsi/atari_NCR5380.c b/drivers/scsi/atari_NCR5380.c
index 74b7c538c394..590035f194e3 100644
--- a/drivers/scsi/atari_NCR5380.c
+++ b/drivers/scsi/atari_NCR5380.c
@@ -274,26 +274,17 @@ static struct scsi_host_template *the_template = NULL;
* important: the tag bit must be cleared before 'nr_allocated' is decreased.
*/
-typedef struct {
- DECLARE_BITMAP(allocated, MAX_TAGS);
- int nr_allocated;
- int queue_size;
-} TAG_ALLOC;
-
-static TAG_ALLOC TagAlloc[8][8]; /* 8 targets and 8 LUNs */
-
-
static void __init init_tags(struct NCR5380_hostdata *hostdata)
{
int target, lun;
- TAG_ALLOC *ta;
+ struct tag_alloc *ta;
if (!(hostdata->flags & FLAG_TAGGED_QUEUING))
return;
for (target = 0; target < 8; ++target) {
for (lun = 0; lun < 8; ++lun) {
- ta = &TagAlloc[target][lun];
+ ta = &hostdata->TagAlloc[target][lun];
bitmap_zero(ta->allocated, MAX_TAGS);
ta->nr_allocated = 0;
/* At the beginning, assume the maximum queue size we could
@@ -324,8 +315,8 @@ static int is_lun_busy(struct scsi_cmnd *cmd, int should_be_tagged)
!(hostdata->flags & FLAG_TAGGED_QUEUING) ||
!cmd->device->tagged_supported)
return 0;
- if (TagAlloc[cmd->device->id][lun].nr_allocated >=
- TagAlloc[cmd->device->id][lun].queue_size) {
+ if (hostdata->TagAlloc[scmd_id(cmd)][lun].nr_allocated >=
+ hostdata->TagAlloc[scmd_id(cmd)][lun].queue_size) {
dprintk(NDEBUG_TAGS, "scsi%d: target %d lun %d: no free tags\n",
H_NO(cmd), cmd->device->id, lun);
return 1;
@@ -355,7 +346,7 @@ static void cmd_get_tag(struct scsi_cmnd *cmd, int should_be_tagged)
dprintk(NDEBUG_TAGS, "scsi%d: target %d lun %d now allocated by untagged "
"command\n", H_NO(cmd), cmd->device->id, lun);
} else {
- TAG_ALLOC *ta = &TagAlloc[cmd->device->id][lun];
+ struct tag_alloc *ta = &hostdata->TagAlloc[scmd_id(cmd)][lun];
cmd->tag = find_first_zero_bit(ta->allocated, MAX_TAGS);
set_bit(cmd->tag, ta->allocated);
@@ -385,7 +376,7 @@ static void cmd_free_tag(struct scsi_cmnd *cmd)
printk(KERN_NOTICE "scsi%d: trying to free bad tag %d!\n",
H_NO(cmd), cmd->tag);
} else {
- TAG_ALLOC *ta = &TagAlloc[cmd->device->id][lun];
+ struct tag_alloc *ta = &hostdata->TagAlloc[scmd_id(cmd)][lun];
clear_bit(cmd->tag, ta->allocated);
ta->nr_allocated--;
dprintk(NDEBUG_TAGS, "scsi%d: freed tag %d for target %d lun %d\n",
@@ -397,14 +388,14 @@ static void cmd_free_tag(struct scsi_cmnd *cmd)
static void free_all_tags(struct NCR5380_hostdata *hostdata)
{
int target, lun;
- TAG_ALLOC *ta;
+ struct tag_alloc *ta;
if (!(hostdata->flags & FLAG_TAGGED_QUEUING))
return;
for (target = 0; target < 8; ++target) {
for (lun = 0; lun < 8; ++lun) {
- ta = &TagAlloc[target][lun];
+ ta = &hostdata->TagAlloc[target][lun];
bitmap_zero(ta->allocated, MAX_TAGS);
ta->nr_allocated = 0;
}
@@ -2205,7 +2196,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
*/
/* ++Andreas: the mid level code knows about
QUEUE_FULL now. */
- TAG_ALLOC *ta = &TagAlloc[cmd->device->id][cmd->device->lun];
+ struct tag_alloc *ta = &hostdata->TagAlloc[scmd_id(cmd)][cmd->device->lun];
dprintk(NDEBUG_TAGS, "scsi%d: target %d lun %llu returned "
"QUEUE_FULL after %d commands\n",
HOSTNO, cmd->device->id, cmd->device->lun,