Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/aoe-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/aoe-2.6:
  [PATCH] aoe [3/3]: update version to 22
  [PATCH] aoe [2/3]: don't request ATA device ID on ATA error
  [PATCH] aoe [1/3]: support multiple AoE listeners
  [PATCH] aoe: do not stop retransmit timer when device goes down
  [PATCH] aoe [8/8]: update driver version number
  [PATCH] aoe [7/8]: update driver compatibility string
  [PATCH] aoe [6/8]: update device information on last close
  [PATCH] aoe [5/8]: allow network interface migration on packet retransmit
  [PATCH] aoe [4/8]: use less confusing driver name
  [PATCH] aoe [3/8]: increase allowed outstanding packets
  [PATCH] aoe [2/8]: support dynamic resizing of AoE devices
  [PATCH] aoe [1/8]: zero packet data after skb allocation

1 files changed, 37 insertions, 0 deletions

diff --git a/drivers/block/aoe/aoechr.c b/drivers/block/aoe/aoechr.c
index 41ae0ede619a..5327f553b4f5 100644
--- a/drivers/block/aoe/aoechr.c
+++ b/drivers/block/aoe/aoechr.c
@@ -13,6 +13,7 @@ enum {
 	MINOR_ERR = 2,
 	MINOR_DISCOVER,
 	MINOR_INTERFACES,
+	MINOR_REVALIDATE,
 	MSGSZ = 2048,
 	NARGS = 10,
 	NMSG = 100,		/* message backlog to retain */
@@ -41,6 +42,7 @@ static struct aoe_chardev chardevs[] = {
 	{ MINOR_ERR, "err" },
 	{ MINOR_DISCOVER, "discover" },
 	{ MINOR_INTERFACES, "interfaces" },
+	{ MINOR_REVALIDATE, "revalidate" },
 };
 
 static int
@@ -62,6 +64,39 @@ interfaces(const char __user *str, size_t size)
 	return 0;
 }
 
+static int
+revalidate(const char __user *str, size_t size)
+{
+	int major, minor, n;
+	ulong flags;
+	struct aoedev *d;
+	char buf[16];
+
+	if (size >= sizeof buf)
+		return -EINVAL;
+	buf[sizeof buf - 1] = '\0';
+	if (copy_from_user(buf, str, size))
+		return -EFAULT;
+
+	/* should be e%d.%d format */
+	n = sscanf(buf, "e%d.%d", &major, &minor);
+	if (n != 2) {
+		printk(KERN_ERR "aoe: %s: invalid device specification\n",
+			__FUNCTION__);
+		return -EINVAL;
+	}
+	d = aoedev_by_aoeaddr(major, minor);
+	if (!d)
+		return -EINVAL;
+
+	spin_lock_irqsave(&d->lock, flags);
+	d->flags |= DEVFL_PAUSE;
+	spin_unlock_irqrestore(&d->lock, flags);
+	aoecmd_cfg(major, minor);
+
+	return 0;
+}
+
 void
 aoechr_error(char *msg)
 {
@@ -114,6 +149,8 @@ aoechr_write(struct file *filp, const char __user *buf, size_t cnt, loff_t *offp
 	case MINOR_INTERFACES:
 		ret = interfaces(buf, cnt);
 		break;
+	case MINOR_REVALIDATE:
+		ret = revalidate(buf, cnt);
 	}
 	if (ret == 0)
 		ret = cnt;