commit a1a5ea70a6e9db6332b27fe2d96666e17aa1436b
author Markus Lidel <Markus.Lidel@shadowconnect.com> Fri Jan 06 00:19:29 2006 -0800
committer Linus Torvalds <torvalds@g5.osdl.org> Fri Jan 06 08:33:53 2006 -0800
tree 7edfe920aa40af94464ab05539d449dbe5689254
parent 347a8dc3b815f0c0fa62a1df075184ffe4cbdcf1

[PATCH] I2O: changed I2O API to create I2O messages in kernel memory

Changed the I2O API to create I2O messages first in kernel memory and then
transfer it at once over the PCI bus instead of sending each quad-word over
the PCI bus.

Signed-off-by: Markus Lidel <Markus.Lidel@shadowconnect.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/message/i2o/bus-osm.c

diff --git a/drivers/message/i2o/bus-osm.c b/drivers/message/i2o/bus-osm.c
index 151b228..ce039d3 100644
--- a/drivers/message/i2o/bus-osm.c
+++ b/drivers/message/i2o/bus-osm.c
@@ -39,18 +39,18 @@
  */
 static int i2o_bus_scan(struct i2o_device *dev)
 {
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 
-	m = i2o_msg_get_wait(dev->iop, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
+	msg = i2o_msg_get_wait(dev->iop, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
 		return -ETIMEDOUT;
 
-	writel(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
-	writel(I2O_CMD_BUS_SCAN << 24 | HOST_TID << 12 | dev->lct_data.tid,
-	       &msg->u.head[1]);
+	msg->u.head[0] = cpu_to_le32(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_BUS_SCAN << 24 | HOST_TID << 12 | dev->lct_data.
+			tid);
 
-	return i2o_msg_post_wait(dev->iop, m, 60);
+	return i2o_msg_post_wait(dev->iop, msg, 60);
 };
 
 /**
@@ -59,8 +59,9 @@
  *
  *	Returns count.
  */
-static ssize_t i2o_bus_store_scan(struct device *d, struct device_attribute *attr, const char *buf,
-				  size_t count)
+static ssize_t i2o_bus_store_scan(struct device *d,
+				  struct device_attribute *attr,
+				  const char *buf, size_t count)
 {
 	struct i2o_device *i2o_dev = to_i2o_device(d);
 	int rc;