[GIT PULL] SCSI fixes for 7.0-rc2

[James Bottomley <James.Bottomley@HansenPartnership.com>]

Two core changes and the rest in drivers, one core change to quirk the
behaviour of the Iomega Zip drive and one to fix a hang caused by tag
reallocation problems, which has mostly been seen by the iscsi client.
Note the latter fixes the problem but still has a slight sysfs memory
leak, so will be amended in the next pull request (once we've run the
fix for the fix through our testing).

The patch is available here:

git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git scsi-fixes

The short changelog is:

Florian Fuchs (1):
      scsi: devinfo: Add BLIST_SKIP_IO_HINTS for Iomega ZIP

Junxiao Bi (1):
      scsi: core: Fix refcount leak for tagset_refcnt

Prithvi Tambewagh (1):
      scsi: target: Fix recursive locking in __configfs_open_file()

Ranjan Kumar (1):
      scsi: mpi3mr: Clear reset history on ready and recheck state after timeout

And the diffstat:

 drivers/scsi/mpi3mr/mpi3mr_fw.c       | 10 ++++++++++
 drivers/scsi/scsi_devinfo.c           |  2 +-
 drivers/scsi/scsi_scan.c              |  1 +
 drivers/target/target_core_configfs.c | 15 ++++++---------
 4 files changed, 18 insertions(+), 10 deletions(-)

With full diff below.

Regards,

James

---

diff --git a/drivers/scsi/mpi3mr/mpi3mr_fw.c b/drivers/scsi/mpi3mr/mpi3mr_fw.c
index 5875065e2849..c744210cc901 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_fw.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_fw.c
@@ -1618,6 +1618,7 @@ static int mpi3mr_bring_ioc_ready(struct mpi3mr_ioc *mrioc)
 			ioc_info(mrioc,
 			    "successfully transitioned to %s state\n",
 			    mpi3mr_iocstate_name(ioc_state));
+			mpi3mr_clear_reset_history(mrioc);
 			return 0;
 		}
 		ioc_status = readl(&mrioc->sysif_regs->ioc_status);
@@ -1637,6 +1638,15 @@ static int mpi3mr_bring_ioc_ready(struct mpi3mr_ioc *mrioc)
 		elapsed_time_sec = jiffies_to_msecs(jiffies - start_time)/1000;
 	} while (elapsed_time_sec < mrioc->ready_timeout);
 
+	ioc_state = mpi3mr_get_iocstate(mrioc);
+	if (ioc_state == MRIOC_STATE_READY) {
+		ioc_info(mrioc,
+		    "successfully transitioned to %s state after %llu seconds\n",
+		    mpi3mr_iocstate_name(ioc_state), elapsed_time_sec);
+		mpi3mr_clear_reset_history(mrioc);
+		return 0;
+	}
+
 out_failed:
 	elapsed_time_sec = jiffies_to_msecs(jiffies - start_time)/1000;
 	if ((retry < 2) && (elapsed_time_sec < (mrioc->ready_timeout - 60))) {
diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c
index 0dada89d8d99..68a992494b12 100644
--- a/drivers/scsi/scsi_devinfo.c
+++ b/drivers/scsi/scsi_devinfo.c
@@ -190,7 +190,7 @@ static struct {
 	{"IBM", "2076", NULL, BLIST_NO_VPD_SIZE},
 	{"IBM", "2105", NULL, BLIST_RETRY_HWERROR},
 	{"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN},
-	{"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN},
+	{"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN | BLIST_SKIP_IO_HINTS},
 	{"IOMEGA", "Io20S         *F", NULL, BLIST_KEY},
 	{"INSITE", "Floptical   F*8I", NULL, BLIST_KEY},
 	{"INSITE", "I325VM", NULL, BLIST_KEY},
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 60c06fa4ec32..2cfcf1f5d6a4 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -361,6 +361,7 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget,
 	 * since we use this queue depth most of times.
 	 */
 	if (scsi_realloc_sdev_budget_map(sdev, depth)) {
+		kref_put(&sdev->host->tagset_refcnt, scsi_mq_free_tags);
 		put_device(&starget->dev);
 		kfree(sdev);
 		goto out;
diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c
index 17608ea39d5a..a1c91d4515bc 100644
--- a/drivers/target/target_core_configfs.c
+++ b/drivers/target/target_core_configfs.c
@@ -108,8 +108,8 @@ static ssize_t target_core_item_dbroot_store(struct config_item *item,
 					const char *page, size_t count)
 {
 	ssize_t read_bytes;
-	struct file *fp;
 	ssize_t r = -EINVAL;
+	struct path path = {};
 
 	mutex_lock(&target_devices_lock);
 	if (target_devices) {
@@ -131,17 +131,14 @@ static ssize_t target_core_item_dbroot_store(struct config_item *item,
 		db_root_stage[read_bytes - 1] = '\0';
 
 	/* validate new db root before accepting it */
-	fp = filp_open(db_root_stage, O_RDONLY, 0);
-	if (IS_ERR(fp)) {
+	r = kern_path(db_root_stage, LOOKUP_FOLLOW | LOOKUP_DIRECTORY, &path);
+	if (r) {
 		pr_err("db_root: cannot open: %s\n", db_root_stage);
+		if (r == -ENOTDIR)
+			pr_err("db_root: not a directory: %s\n", db_root_stage);
 		goto unlock;
 	}
-	if (!S_ISDIR(file_inode(fp)->i_mode)) {
-		filp_close(fp, NULL);
-		pr_err("db_root: not a directory: %s\n", db_root_stage);
-		goto unlock;
-	}
-	filp_close(fp, NULL);
+	path_put(&path);
 
 	strscpy(db_root, db_root_stage);
 	pr_debug("Target_Core_ConfigFS: db_root set to %s\n", db_root);