Merge branch 'mpi-master' into wip-k-fmlpwip-k-fmlp

Conflicts:
	litmus/sched_cedf.c

1 files changed, 8 insertions, 10 deletions

diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c
index d53b0291c44b..b2fceb53e809 100644
--- a/drivers/block/cpqarray.c
+++ b/drivers/block/cpqarray.c
@@ -35,7 +35,7 @@
 #include <linux/seq_file.h>
 #include <linux/init.h>
 #include <linux/hdreg.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <linux/spinlock.h>
 #include <linux/blkdev.h>
 #include <linux/genhd.h>
@@ -68,6 +68,7 @@ MODULE_LICENSE("GPL");
 
 #define CPQARRAY_DMA_MASK       0xFFFFFFFF      /* 32 bit DMA */
 
+static DEFINE_MUTEX(cpqarray_mutex);
 static int nr_ctlr;
 static ctlr_info_t *hba[MAX_CTLR];
 
@@ -845,9 +846,9 @@ static int ida_unlocked_open(struct block_device *bdev, fmode_t mode)
 {
         int ret;
 
-        lock_kernel();
+        mutex_lock(&cpqarray_mutex);
         ret = ida_open(bdev, mode);
-        unlock_kernel();
+        mutex_unlock(&cpqarray_mutex);
 
         return ret;
 }
@@ -859,10 +860,10 @@ static int ida_release(struct gendisk *disk, fmode_t mode)
 {
         ctlr_info_t *host;
 
-        lock_kernel();
+        mutex_lock(&cpqarray_mutex);
         host = get_host(disk);
         host->usage_count--;
-        unlock_kernel();
+        mutex_unlock(&cpqarray_mutex);
 
         return 0;
 }
@@ -910,9 +911,6 @@ static void do_ida_request(struct request_queue *q)
         struct scatterlist tmp_sg[SG_MAX];
         int i, dir, seg;
 
-        if (blk_queue_plugged(q))
-                goto startio;
-
 queue_next:
         creq = blk_peek_request(q);
         if (!creq)
@@ -1217,9 +1215,9 @@ static int ida_ioctl(struct block_device *bdev, fmode_t mode,
 {
         int ret;
 
-        lock_kernel();
+        mutex_lock(&cpqarray_mutex);
         ret = ida_locked_ioctl(bdev, mode, cmd, param);
-        unlock_kernel();
+        mutex_unlock(&cpqarray_mutex);
 
         return ret;
 }