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[PATCH] I2O: first code cleanup of spare warnings and unused functions

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Changes:

 - Removed unnecessary checking of NULL before calling kfree()
 - Make some functions static
 - Changed pr_debug() into osm_debug()
 - Use i2o_msg_in_to_virt() for getting a pointer to the message frame
 - Cleaned up some comments
 - Changed some le32_to_cpu() into readl() where necessary
 - Make error messages of OSM's look the same
 - Cleaned up error handling in i2o_block_end_request()
 - Removed unused error handling of failed messages in Block-OSM, which
   are not allowed by the I2O spec
 - Corrected the blocksize detection in i2o_block
 - Added hrt and lct sysfs-attribute to controller
 - Call done() function in SCSI-OSM after freeing DMA buffers
 - Removed unneeded variable for message size calculation in
   i2o_scsi_queuecommand()
 - Make some changes to remove sparse warnings
 - Reordered some functions
 - Cleaned up controller initialization
 - Replaced some magic numbers by defines
 - Removed unnecessary dma_sync_single_for_cpu() call on coherent DMA
 - Removed some unused fields in i2o_controller and removed some unused
   functions

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>
This commit is contained in:
Markus Lidel
2005-06-23 22:02:14 -07:00
committed by Linus Torvalds
parent 61fbfa8129
commit f88e119c4b
10 changed files with 359 additions and 339 deletions
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31
drivers/message/i2o/i2o_scsi.c
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@@ -40,6 +40,7 @@
* Fix the resource management problems.
*/
#define DEBUG 1
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
@@ -179,6 +180,8 @@ static int i2o_scsi_remove(struct device *dev)
struct i2o_scsi_host *i2o_shost;
struct scsi_device *scsi_dev;
osm_info("device removed (TID: %03x)\n", i2o_dev->lct_data.tid);
i2o_shost = i2o_scsi_get_host(c);
shost_for_each_device(scsi_dev, i2o_shost->scsi_host)
@@ -262,8 +265,8 @@ static int i2o_scsi_probe(struct device *dev)
return -EFAULT;
}
osm_debug("added new SCSI device %03x (cannel: %d, id: %d, lun: %d)\n",
i2o_dev->lct_data.tid, channel, id, (unsigned int)lun);
osm_info("device added (TID: %03x) channel: %d, id: %d, lun: %d\n",
i2o_dev->lct_data.tid, channel, id, (unsigned int)lun);
return 0;
};
@@ -439,8 +442,6 @@ static int i2o_scsi_reply(struct i2o_controller *c, u32 m,
cmd->result = DID_OK << 16 | ds;
cmd->scsi_done(cmd);
dev = &c->pdev->dev;
if (cmd->use_sg)
dma_unmap_sg(dev, (struct scatterlist *)cmd->buffer,
@@ -449,6 +450,8 @@ static int i2o_scsi_reply(struct i2o_controller *c, u32 m,
dma_unmap_single(dev, (dma_addr_t) ((long)cmd->SCp.ptr),
cmd->request_bufflen, cmd->sc_data_direction);
cmd->scsi_done(cmd);
return 1;
};
@@ -502,7 +505,7 @@ static void i2o_scsi_notify_controller_remove(struct i2o_controller *c)
scsi_remove_host(i2o_shost->scsi_host);
scsi_host_put(i2o_shost->scsi_host);
pr_info("I2O SCSI host removed\n");
osm_debug("I2O SCSI host removed\n");
};
/* SCSI OSM driver struct */
@@ -545,7 +548,7 @@ static int i2o_scsi_queuecommand(struct scsi_cmnd *SCpnt,
u32 scsi_flags, sg_flags;
u32 __iomem *mptr;
u32 __iomem *lenptr;
u32 len, reqlen;
u32 len;
int i;
/*
@@ -580,12 +583,12 @@ static int i2o_scsi_queuecommand(struct scsi_cmnd *SCpnt,
if (m == I2O_QUEUE_EMPTY)
return SCSI_MLQUEUE_HOST_BUSY;
mptr = &msg->body[0];
/*
* Put together a scsi execscb message
*/
len = SCpnt->request_bufflen;
switch (SCpnt->sc_data_direction) {
case PCI_DMA_NONE:
scsi_flags = 0x00000000; // DATA NO XFER
@@ -637,17 +640,13 @@ static int i2o_scsi_queuecommand(struct scsi_cmnd *SCpnt,
*/
/* Direction, disconnect ok, tag, CDBLen */
writel(scsi_flags | 0x20200000 | SCpnt->cmd_len, &msg->body[0]);
mptr = &msg->body[1];
writel(scsi_flags | 0x20200000 | SCpnt->cmd_len, mptr ++);
/* Write SCSI command into the message - always 16 byte block */
memcpy_toio(mptr, SCpnt->cmnd, 16);
mptr += 4;
lenptr = mptr++; /* Remember me - fill in when we know */
reqlen = 12; // SINGLE SGE
/* Now fill in the SGList and command */
if (SCpnt->use_sg) {
struct scatterlist *sg;
@@ -671,7 +670,6 @@ static int i2o_scsi_queuecommand(struct scsi_cmnd *SCpnt,
sg++;
}
reqlen = mptr - &msg->u.head[0];
writel(len, lenptr);
} else {
len = SCpnt->request_bufflen;
@@ -691,12 +689,11 @@ static int i2o_scsi_queuecommand(struct scsi_cmnd *SCpnt,
sg_flags |= 0xC0000000;
writel(sg_flags | SCpnt->request_bufflen, mptr++);
writel(dma_addr, mptr++);
} else
reqlen = 9;
}
}
/* Stick the headers on */
writel(reqlen << 16 | SGL_OFFSET_10, &msg->u.head[0]);
writel((mptr - &msg->u.head[0]) << 16 | SGL_OFFSET_10, &msg->u.head[0]);
/* Queue the message */
i2o_msg_post(c, m);