sgi-xp: support runtime selection of xp_max_npartitions

Support runtime selection of the max number of partitions based on the
hardware being run on.

Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 10 insertions, 10 deletions

diff --git a/drivers/misc/sgi-xp/xpc_channel.c b/drivers/misc/sgi-xp/xpc_channel.c
index 9c90c2d55c08..12d8eb6957a7 100644
--- a/drivers/misc/sgi-xp/xpc_channel.c
+++ b/drivers/misc/sgi-xp/xpc_channel.c
@@ -110,14 +110,14 @@ xpc_setup_infrastructure(struct xpc_partition *part)
          * Allocate all of the channel structures as a contiguous chunk of
          * memory.
          */
-        part->channels = kzalloc(sizeof(struct xpc_channel) * XPC_NCHANNELS,
+        part->channels = kzalloc(sizeof(struct xpc_channel) * XPC_MAX_NCHANNELS,
                                  GFP_KERNEL);
         if (part->channels == NULL) {
                 dev_err(xpc_chan, "can't get memory for channels\n");
                 return xpNoMemory;
         }
 
-        part->nchannels = XPC_NCHANNELS;
+        part->nchannels = XPC_MAX_NCHANNELS;
 
         /* allocate all the required GET/PUT values */
 
@@ -1432,9 +1432,9 @@ xpc_initiate_connect(int ch_number)
         struct xpc_partition *part;
         struct xpc_channel *ch;
 
-        DBUG_ON(ch_number < 0 || ch_number >= XPC_NCHANNELS);
+        DBUG_ON(ch_number < 0 || ch_number >= XPC_MAX_NCHANNELS);
 
-        for (partid = 1; partid < XP_MAX_PARTITIONS; partid++) {
+        for (partid = 0; partid < xp_max_npartitions; partid++) {
                 part = &xpc_partitions[partid];
 
                 if (xpc_part_ref(part)) {
@@ -1488,10 +1488,10 @@ xpc_initiate_disconnect(int ch_number)
         struct xpc_partition *part;
         struct xpc_channel *ch;
 
-        DBUG_ON(ch_number < 0 || ch_number >= XPC_NCHANNELS);
+        DBUG_ON(ch_number < 0 || ch_number >= XPC_MAX_NCHANNELS);
 
         /* initiate the channel disconnect for every active partition */
-        for (partid = 1; partid < XP_MAX_PARTITIONS; partid++) {
+        for (partid = 0; partid < xp_max_npartitions; partid++) {
                 part = &xpc_partitions[partid];
 
                 if (xpc_part_ref(part)) {
@@ -1734,7 +1734,7 @@ xpc_initiate_allocate(short partid, int ch_number, u32 flags, void **payload)
         enum xp_retval ret = xpUnknownReason;
         struct xpc_msg *msg = NULL;
 
-        DBUG_ON(partid <= 0 || partid >= XP_MAX_PARTITIONS);
+        DBUG_ON(partid < 0 || partid >= xp_max_npartitions);
         DBUG_ON(ch_number < 0 || ch_number >= part->nchannels);
 
         *payload = NULL;
@@ -1918,7 +1918,7 @@ xpc_initiate_send(short partid, int ch_number, void *payload)
         dev_dbg(xpc_chan, "msg=0x%p, partid=%d, channel=%d\n", (void *)msg,
                 partid, ch_number);
 
-        DBUG_ON(partid <= 0 || partid >= XP_MAX_PARTITIONS);
+        DBUG_ON(partid < 0 || partid >= xp_max_npartitions);
         DBUG_ON(ch_number < 0 || ch_number >= part->nchannels);
         DBUG_ON(msg == NULL);
 
@@ -1968,7 +1968,7 @@ xpc_initiate_send_notify(short partid, int ch_number, void *payload,
         dev_dbg(xpc_chan, "msg=0x%p, partid=%d, channel=%d\n", (void *)msg,
                 partid, ch_number);
 
-        DBUG_ON(partid <= 0 || partid >= XP_MAX_PARTITIONS);
+        DBUG_ON(partid < 0 || partid >= xp_max_npartitions);
         DBUG_ON(ch_number < 0 || ch_number >= part->nchannels);
         DBUG_ON(msg == NULL);
         DBUG_ON(func == NULL);
@@ -2210,7 +2210,7 @@ xpc_initiate_received(short partid, int ch_number, void *payload)
         struct xpc_msg *msg = XPC_MSG_ADDRESS(payload);
         s64 get, msg_number = msg->number;
 
-        DBUG_ON(partid <= 0 || partid >= XP_MAX_PARTITIONS);
+        DBUG_ON(partid < 0 || partid >= xp_max_npartitions);
         DBUG_ON(ch_number < 0 || ch_number >= part->nchannels);
 
         ch = &part->channels[ch_number];