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path: root/drivers/scsi/sg.c
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Diffstat (limited to 'drivers/scsi/sg.c')
-rw-r--r--drivers/scsi/sg.c24
1 files changed, 16 insertions, 8 deletions
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index f1871ea0404..17216b76efd 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -602,8 +602,9 @@ sg_write(struct file *filp, const char __user *buf, size_t count, loff_t * ppos)
* 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 " "
@@ -611,6 +612,9 @@ sg_write(struct file *filp, const char __user *buf, size_t count, loff_t * ppos)
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;
}
@@ -1418,7 +1422,6 @@ sg_add(struct class_device *cl_dev, struct class_interface *cl_intf)
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;
@@ -1431,11 +1434,14 @@ sg_add(struct class_device *cl_dev, struct class_interface *cl_intf)
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 "
@@ -1447,6 +1453,8 @@ sg_add(struct class_device *cl_dev, struct class_interface *cl_intf)
"Attached scsi generic sg%d type %d\n", sdp->index,
scsidp->type);
+ class_set_devdata(cl_dev, sdp);
+
return 0;
cdev_add_err:
@@ -2521,7 +2529,7 @@ sg_idr_max_id(int id, void *p, void *data)
static int
sg_last_dev(void)
{
- int k = 0;
+ int k = -1;
unsigned long iflags;
read_lock_irqsave(&sg_index_lock, iflags);