Subject: linux-next: build failure after merge of the scsi-mkp tree

From: Stephen Rothwell <[email-masked]>
Date: Tue, 8 Dec 2020 20:28:53 +1100

Hi all,

After merging the scsi-mkp tree, today's linux-next build (sparc64
defconfig) failed like this:

drivers/mtd/nand/raw/intel-nand-controller.c:17:10: fatal error: linux/mtd/nand_ecc.h: No such file or directory
   17 | #include <linux/mtd/nand_ecc.h>
      |          ^~~~~~~~~~~~~~~~~~~~~~

Caused by commit

  81a395cdc176 ("scsi: block: Do not accept any requests while suspended")

# CONFIG_PM is not set

I have applied the following patch:

From: Stephen Rothwell <[email-masked]>
Date: Tue, 8 Dec 2020 20:12:33 +1100
Subject: [PATCH] scsi: block: fix for "scsi: block: Do not accept any requests while suspended"

Fixes: 81a395cdc176 ("scsi: block: Do not accept any requests while suspended")
Signed-off-by: Stephen Rothwell <[email-masked]>
---
 block/blk-core.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/block/blk-core.c b/block/blk-core.c
index a71a5c9429d6..9c9aec1382be 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -421,6 +421,18 @@ void blk_cleanup_queue(struct request_queue *q)
 }
 EXPORT_SYMBOL(blk_cleanup_queue);
 
+#ifdef CONFIG_PM
+static bool rq_suspended(struct request_queue *q)
+{
+	return q->rpm_status == RPM_SUSPENDED;
+}
+#else
+static bool rq_suspended(struct request_queue *q)
+{
+	return false;
+}
+#endif
+
 /**
  * blk_queue_enter() - try to increase q->q_usage_counter
  * @q: request queue pointer
@@ -440,12 +452,10 @@ int blk_queue_enter(struct request_queue *q, blk_mq_req_flags_t flags)
 			 * responsible for ensuring that that counter is
 			 * globally visible before the queue is unfrozen.
 			 */
-			if ((pm && q->rpm_status != RPM_SUSPENDED) ||
-			    !blk_queue_pm_only(q)) {
+			if ((pm && !rq_suspended(q)) || !blk_queue_pm_only(q))
 				success = true;
-			} else {
+			else
 				percpu_ref_put(&q->q_usage_counter);
-			}
 		}
 		rcu_read_unlock();
 
-- 
2.29.2

-- 
Cheers,
Stephen Rothwell