#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/scatterlist.h>
+#include <linux/blktrace_api.h>
#include "scsi.h"
#include <scsi/scsi_dbg.h>
* but is is possible that the app intended SG_DXFER_TO_DEV, because there
* is a non-zero input_size, so emit a warning.
*/
- if (hp->dxfer_direction == SG_DXFER_TO_FROM_DEV)
- if (printk_ratelimit())
+ if (hp->dxfer_direction == SG_DXFER_TO_FROM_DEV) {
+ static char cmd[TASK_COMM_LEN];
+ if (strcmp(current->comm, cmd) && printk_ratelimit()) {
printk(KERN_WARNING
"sg_write: data in/out %d/%d bytes for SCSI command 0x%x--"
"guessing data in;\n" KERN_WARNING " "
old_hdr.reply_len - (int)SZ_SG_HEADER,
input_size, (unsigned int) cmnd[0],
current->comm);
+ strcpy(cmd, current->comm);
+ }
+ }
k = sg_common_write(sfp, srp, cmnd, sfp->timeout, blocking);
return (k < 0) ? k : count;
}
case BLKSECTGET:
return put_user(sdp->device->request_queue->max_sectors * 512,
ip);
+ case BLKTRACESETUP:
+ return blk_trace_setup(sdp->device->request_queue,
+ sdp->disk->disk_name,
+ sdp->device->sdev_gendev.devt,
+ (char *)arg);
+ case BLKTRACESTART:
+ return blk_trace_startstop(sdp->device->request_queue, 1);
+ case BLKTRACESTOP:
+ return blk_trace_startstop(sdp->device->request_queue, 0);
+ case BLKTRACETEARDOWN:
+ return blk_trace_remove(sdp->device->request_queue);
default:
if (read_only)
return -EPERM; /* don't know so take safe approach */
goto out;
}
- class_set_devdata(cl_dev, sdp);
error = cdev_add(cdev, MKDEV(SCSI_GENERIC_MAJOR, sdp->index), 1);
if (error)
goto cdev_add_err;
MKDEV(SCSI_GENERIC_MAJOR, sdp->index),
cl_dev->dev, "%s",
disk->disk_name);
- if (IS_ERR(sg_class_member))
- printk(KERN_WARNING "sg_add: "
- "class_device_create failed\n");
+ if (IS_ERR(sg_class_member)) {
+ printk(KERN_ERR "sg_add: "
+ "class_device_create failed\n");
+ error = PTR_ERR(sg_class_member);
+ goto cdev_add_err;
+ }
class_set_devdata(sg_class_member, sdp);
- error = sysfs_create_link(&scsidp->sdev_gendev.kobj,
+ error = sysfs_create_link(&scsidp->sdev_gendev.kobj,
&sg_class_member->kobj, "generic");
if (error)
printk(KERN_ERR "sg_add: unable to make symlink "
"Attached scsi generic sg%d type %d\n", sdp->index,
scsidp->type);
+ class_set_devdata(cl_dev, sdp);
+
return 0;
cdev_add_err:
schp->buffer = kzalloc(sg_bufflen, gfp_flags);
if (!schp->buffer)
return -ENOMEM;
+ sg_init_table(schp->buffer, tablesize);
schp->sglist_len = sg_bufflen;
return tablesize; /* number of scat_gath elements allocated */
}
goto out_unlock; */
}
- sg_set_page(sgl, pages[0]);
- sgl[0].offset = uaddr & ~PAGE_MASK;
+ sg_set_page(sgl, pages[0], 0, uaddr & ~PAGE_MASK);
if (nr_pages > 1) {
sgl[0].length = PAGE_SIZE - sgl[0].offset;
count -= sgl[0].length;
- for (i=1; i < nr_pages ; i++) {
- sg_set_page(&sgl[i], pages[i]);
- sgl[i].length = count < PAGE_SIZE ? count : PAGE_SIZE;
- count -= PAGE_SIZE;
- }
+ for (i=1; i < nr_pages ; i++)
+ sg_set_page(&sgl[i], pages[i], count < PAGE_SIZE ? count : PAGE_SIZE, 0);
}
else {
sgl[0].length = count;
scatter_elem_sz_prev = ret_sz;
}
}
- sg_set_page(sg, p);
- sg->length = (ret_sz > num) ? num : ret_sz;
+ sg_set_page(sg, p, (ret_sz > num) ? num : ret_sz, 0);
SCSI_LOG_TIMEOUT(5, printk("sg_build_indirect: k=%d, num=%d, "
"ret_sz=%d\n", k, num, ret_sz));
static int
sg_last_dev(void)
{
- int k = 0;
+ int k = -1;
unsigned long iflags;
read_lock_irqsave(&sg_index_lock, iflags);