IB: convert from semaphores to mutexes

semaphore to mutex conversion by Ingo and Arjan's script.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
[ Sanity-checked on real IB hardware ]
Signed-off-by: Roland Dreier <rolandd@cisco.com>

5 files changed, 105 insertions, 104 deletions

diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index e169e79..b2f3cb9 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -38,8 +38,7 @@
 #include <linux/errno.h>
 #include <linux/slab.h>
 #include <linux/init.h>
-
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
 
 #include "core_priv.h"
 
@@ -57,13 +56,13 @@ static LIST_HEAD(device_list);
 static LIST_HEAD(client_list);
 
 /*
- * device_sem protects access to both device_list and client_list.
+ * device_mutex protects access to both device_list and client_list.
  * There's no real point to using multiple locks or something fancier
  * like an rwsem: we always access both lists, and we're always
  * modifying one list or the other list.  In any case this is not a
  * hot path so there's no point in trying to optimize.
  */
-static DECLARE_MUTEX(device_sem);
+static DEFINE_MUTEX(device_mutex);
 
 static int ib_device_check_mandatory(struct ib_device *device)
 {
@@ -221,7 +220,7 @@ int ib_register_device(struct ib_device *device)
 {
 	int ret;
 
-	down(&device_sem);
+	mutex_lock(&device_mutex);
 
 	if (strchr(device->name, '%')) {
 		ret = alloc_name(device->name);
@@ -259,7 +258,7 @@ int ib_register_device(struct ib_device *device)
 	}
 
  out:
-	up(&device_sem);
+	mutex_unlock(&device_mutex);
 	return ret;
 }
 EXPORT_SYMBOL(ib_register_device);
@@ -276,7 +275,7 @@ void ib_unregister_device(struct ib_device *device)
 	struct ib_client_data *context, *tmp;
 	unsigned long flags;
 
-	down(&device_sem);
+	mutex_lock(&device_mutex);
 
 	list_for_each_entry_reverse(client, &client_list, list)
 		if (client->remove)
@@ -284,7 +283,7 @@ void ib_unregister_device(struct ib_device *device)
 
 	list_del(&device->core_list);
 
-	up(&device_sem);
+	mutex_unlock(&device_mutex);
 
 	spin_lock_irqsave(&device->client_data_lock, flags);
 	list_for_each_entry_safe(context, tmp, &device->client_data_list, list)
@@ -312,14 +311,14 @@ int ib_register_client(struct ib_client *client)
 {
 	struct ib_device *device;
 
-	down(&device_sem);
+	mutex_lock(&device_mutex);
 
 	list_add_tail(&client->list, &client_list);
 	list_for_each_entry(device, &device_list, core_list)
 		if (client->add && !add_client_context(device, client))
 			client->add(device);
 
-	up(&device_sem);
+	mutex_unlock(&device_mutex);
 
 	return 0;
 }
@@ -339,7 +338,7 @@ void ib_unregister_client(struct ib_client *client)
 	struct ib_device *device;
 	unsigned long flags;
 
-	down(&device_sem);
+	mutex_lock(&device_mutex);
 
 	list_for_each_entry(device, &device_list, core_list) {
 		if (client->remove)
@@ -355,7 +354,7 @@ void ib_unregister_client(struct ib_client *client)
 	}
 	list_del(&client->list);
 
-	up(&device_sem);
+	mutex_unlock(&device_mutex);
 }
 EXPORT_SYMBOL(ib_unregister_client);
 
diff --git a/drivers/infiniband/core/ucm.c b/drivers/infiniband/core/ucm.c
index 6e15787..e95c429 100644
--- a/drivers/infiniband/core/ucm.c
+++ b/drivers/infiniband/core/ucm.c
@@ -42,6 +42,7 @@
 #include <linux/mount.h>
 #include <linux/cdev.h>
 #include <linux/idr.h>
+#include <linux/mutex.h>
 
 #include <asm/uaccess.h>
 
@@ -113,7 +114,7 @@ static struct ib_client ucm_client = {
 	.remove = ib_ucm_remove_one
 };
 
-static DECLARE_MUTEX(ctx_id_mutex);
+static DEFINE_MUTEX(ctx_id_mutex);
 static DEFINE_IDR(ctx_id_table);
 static DECLARE_BITMAP(dev_map, IB_UCM_MAX_DEVICES);
 
@@ -121,7 +122,7 @@ static struct ib_ucm_context *ib_ucm_ctx_get(struct ib_ucm_file *file, int id)
 {
 	struct ib_ucm_context *ctx;
 
-	down(&ctx_id_mutex);
+	mutex_lock(&ctx_id_mutex);
 	ctx = idr_find(&ctx_id_table, id);
 	if (!ctx)
 		ctx = ERR_PTR(-ENOENT);
@@ -129,7 +130,7 @@ static struct ib_ucm_context *ib_ucm_ctx_get(struct ib_ucm_file *file, int id)
 		ctx = ERR_PTR(-EINVAL);
 	else
 		atomic_inc(&ctx->ref);
-	up(&ctx_id_mutex);
+	mutex_unlock(&ctx_id_mutex);
 
 	return ctx;
 }
@@ -186,9 +187,9 @@ static struct ib_ucm_context *ib_ucm_ctx_alloc(struct ib_ucm_file *file)
 		if (!result)
 			goto error;
 
-		down(&ctx_id_mutex);
+		mutex_lock(&ctx_id_mutex);
 		result = idr_get_new(&ctx_id_table, ctx, &ctx->id);
-		up(&ctx_id_mutex);
+		mutex_unlock(&ctx_id_mutex);
 	} while (result == -EAGAIN);
 
 	if (result)
@@ -550,9 +551,9 @@ static ssize_t ib_ucm_create_id(struct ib_ucm_file *file,
 err2:
 	ib_destroy_cm_id(ctx->cm_id);
 err1:
-	down(&ctx_id_mutex);
+	mutex_lock(&ctx_id_mutex);
 	idr_remove(&ctx_id_table, ctx->id);
-	up(&ctx_id_mutex);
+	mutex_unlock(&ctx_id_mutex);
 	kfree(ctx);
 	return result;
 }
@@ -572,7 +573,7 @@ static ssize_t ib_ucm_destroy_id(struct ib_ucm_file *file,
 	if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
 		return -EFAULT;
 
-	down(&ctx_id_mutex);
+	mutex_lock(&ctx_id_mutex);
 	ctx = idr_find(&ctx_id_table, cmd.id);
 	if (!ctx)
 		ctx = ERR_PTR(-ENOENT);
@@ -580,7 +581,7 @@ static ssize_t ib_ucm_destroy_id(struct ib_ucm_file *file,
 		ctx = ERR_PTR(-EINVAL);
 	else
 		idr_remove(&ctx_id_table, ctx->id);
-	up(&ctx_id_mutex);
+	mutex_unlock(&ctx_id_mutex);
 
 	if (IS_ERR(ctx))
 		return PTR_ERR(ctx);
@@ -1280,9 +1281,9 @@ static int ib_ucm_close(struct inode *inode, struct file *filp)
 				 struct ib_ucm_context, file_list);
 		up(&file->mutex);
 
-		down(&ctx_id_mutex);
+		mutex_lock(&ctx_id_mutex);
 		idr_remove(&ctx_id_table, ctx->id);
-		up(&ctx_id_mutex);
+		mutex_unlock(&ctx_id_mutex);
 
 		ib_destroy_cm_id(ctx->cm_id);
 		ib_ucm_cleanup_events(ctx);
diff --git a/drivers/infiniband/core/uverbs.h b/drivers/infiniband/core/uverbs.h
index 7114e3f..f7eecbc 100644
--- a/drivers/infiniband/core/uverbs.h
+++ b/drivers/infiniband/core/uverbs.h
@@ -41,6 +41,7 @@
 
 #include <linux/kref.h>
 #include <linux/idr.h>
+#include <linux/mutex.h>
 
 #include <rdma/ib_verbs.h>
 #include <rdma/ib_user_verbs.h>
@@ -88,7 +89,7 @@ struct ib_uverbs_event_file {
 
 struct ib_uverbs_file {
 	struct kref				ref;
-	struct semaphore			mutex;
+	struct mutex				mutex;
 	struct ib_uverbs_device		       *device;
 	struct ib_ucontext		       *ucontext;
 	struct ib_event_handler			event_handler;
@@ -131,7 +132,7 @@ struct ib_ucq_object {
 	u32			async_events_reported;
 };
 
-extern struct semaphore ib_uverbs_idr_mutex;
+extern struct mutex ib_uverbs_idr_mutex;
 extern struct idr ib_uverbs_pd_idr;
 extern struct idr ib_uverbs_mr_idr;
 extern struct idr ib_uverbs_mw_idr;
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 554c205..407b628 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -67,7 +67,7 @@ ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file,
 	if (copy_from_user(&cmd, buf, sizeof cmd))
 		return -EFAULT;
 
-	down(&file->mutex);
+	mutex_lock(&file->mutex);
 
 	if (file->ucontext) {
 		ret = -EINVAL;
@@ -119,7 +119,7 @@ ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file,
 
 	fd_install(resp.async_fd, filp);
 
-	up(&file->mutex);
+	mutex_unlock(&file->mutex);
 
 	return in_len;
 
@@ -131,7 +131,7 @@ err_free:
 	ibdev->dealloc_ucontext(ucontext);
 
 err:
-	up(&file->mutex);
+	mutex_unlock(&file->mutex);
 	return ret;
 }
 
@@ -290,7 +290,7 @@ ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file,
 	pd->uobject = uobj;
 	atomic_set(&pd->usecnt, 0);
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 
 retry:
 	if (!idr_pre_get(&ib_uverbs_pd_idr, GFP_KERNEL)) {
@@ -314,11 +314,11 @@ retry:
 		goto err_idr;
 	}
 
-	down(&file->mutex);
+	mutex_lock(&file->mutex);
 	list_add_tail(&uobj->list, &file->ucontext->pd_list);
-	up(&file->mutex);
+	mutex_unlock(&file->mutex);
 
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	return in_len;
 
@@ -326,7 +326,7 @@ err_idr:
 	idr_remove(&ib_uverbs_pd_idr, uobj->id);
 
 err_up:
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 	ib_dealloc_pd(pd);
 
 err:
@@ -346,7 +346,7 @@ ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file,
 	if (copy_from_user(&cmd, buf, sizeof cmd))
 		return -EFAULT;
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 
 	pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle);
 	if (!pd || pd->uobject->context != file->ucontext)
@@ -360,14 +360,14 @@ ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file,
 
 	idr_remove(&ib_uverbs_pd_idr, cmd.pd_handle);
 
-	down(&file->mutex);
+	mutex_lock(&file->mutex);
 	list_del(&uobj->list);
-	up(&file->mutex);
+	mutex_unlock(&file->mutex);
 
 	kfree(uobj);
 
 out:
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	return ret ? ret : in_len;
 }
@@ -426,7 +426,7 @@ ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file,
 
 	obj->umem.virt_base = cmd.hca_va;
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 
 	pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle);
 	if (!pd || pd->uobject->context != file->ucontext) {
@@ -476,11 +476,11 @@ retry:
 		goto err_idr;
 	}
 
-	down(&file->mutex);
+	mutex_lock(&file->mutex);
 	list_add_tail(&obj->uobject.list, &file->ucontext->mr_list);
-	up(&file->mutex);
+	mutex_unlock(&file->mutex);
 
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	return in_len;
 
@@ -492,7 +492,7 @@ err_unreg:
 	atomic_dec(&pd->usecnt);
 
 err_up:
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	ib_umem_release(file->device->ib_dev, &obj->umem);
 
@@ -513,7 +513,7 @@ ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file,
 	if (copy_from_user(&cmd, buf, sizeof cmd))
 		return -EFAULT;
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 
 	mr = idr_find(&ib_uverbs_mr_idr, cmd.mr_handle);
 	if (!mr || mr->uobject->context != file->ucontext)
@@ -527,15 +527,15 @@ ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file,
 
 	idr_remove(&ib_uverbs_mr_idr, cmd.mr_handle);
 
-	down(&file->mutex);
+	mutex_lock(&file->mutex);
 	list_del(&memobj->uobject.list);
-	up(&file->mutex);
+	mutex_unlock(&file->mutex);
 
 	ib_umem_release(file->device->ib_dev, &memobj->umem);
 	kfree(memobj);
 
 out:
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	return ret ? ret : in_len;
 }
@@ -628,7 +628,7 @@ ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file,
 	cq->cq_context    = ev_file;
 	atomic_set(&cq->usecnt, 0);
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 
 retry:
 	if (!idr_pre_get(&ib_uverbs_cq_idr, GFP_KERNEL)) {
@@ -653,11 +653,11 @@ retry:
 		goto err_idr;
 	}
 
-	down(&file->mutex);
+	mutex_lock(&file->mutex);
 	list_add_tail(&uobj->uobject.list, &file->ucontext->cq_list);
-	up(&file->mutex);
+	mutex_unlock(&file->mutex);
 
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	return in_len;
 
@@ -665,7 +665,7 @@ err_idr:
 	idr_remove(&ib_uverbs_cq_idr, uobj->uobject.id);
 
 err_up:
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 	ib_destroy_cq(cq);
 
 err:
@@ -701,7 +701,7 @@ ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file,
 		goto out_wc;
 	}
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 	cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle);
 	if (!cq || cq->uobject->context != file->ucontext) {
 		ret = -EINVAL;
@@ -731,7 +731,7 @@ ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file,
 		ret = -EFAULT;
 
 out:
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 	kfree(resp);
 
 out_wc:
@@ -750,14 +750,14 @@ ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file,
 	if (copy_from_user(&cmd, buf, sizeof cmd))
 		return -EFAULT;
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 	cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle);
 	if (cq && cq->uobject->context == file->ucontext) {
 		ib_req_notify_cq(cq, cmd.solicited_only ?
 					IB_CQ_SOLICITED : IB_CQ_NEXT_COMP);
 		ret = in_len;
 	}
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	return ret;
 }
@@ -779,7 +779,7 @@ ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file,
 
 	memset(&resp, 0, sizeof resp);
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 
 	cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle);
 	if (!cq || cq->uobject->context != file->ucontext)
@@ -795,9 +795,9 @@ ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file,
 
 	idr_remove(&ib_uverbs_cq_idr, cmd.cq_handle);
 
-	down(&file->mutex);
+	mutex_lock(&file->mutex);
 	list_del(&uobj->uobject.list);
-	up(&file->mutex);
+	mutex_unlock(&file->mutex);
 
 	ib_uverbs_release_ucq(file, ev_file, uobj);
 
@@ -811,7 +811,7 @@ ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file,
 		ret = -EFAULT;
 
 out:
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	return ret ? ret : in_len;
 }
@@ -845,7 +845,7 @@ ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file,
 	if (!uobj)
 		return -ENOMEM;
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 
 	pd  = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle);
 	scq = idr_find(&ib_uverbs_cq_idr, cmd.send_cq_handle);
@@ -930,11 +930,11 @@ retry:
 		goto err_idr;
 	}
 
-	down(&file->mutex);
+	mutex_lock(&file->mutex);
 	list_add_tail(&uobj->uevent.uobject.list, &file->ucontext->qp_list);
-	up(&file->mutex);
+	mutex_unlock(&file->mutex);
 
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	return in_len;
 
@@ -950,7 +950,7 @@ err_destroy:
 		atomic_dec(&attr.srq->usecnt);
 
 err_up:
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	kfree(uobj);
 	return ret;
@@ -972,7 +972,7 @@ ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file,
 	if (!attr)
 		return -ENOMEM;
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 
 	qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle);
 	if (!qp || qp->uobject->context != file->ucontext) {
@@ -1033,7 +1033,7 @@ ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file,
 	ret = in_len;
 
 out:
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 	kfree(attr);
 
 	return ret;
@@ -1054,7 +1054,7 @@ ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file,
 
 	memset(&resp, 0, sizeof resp);
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 
 	qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle);
 	if (!qp || qp->uobject->context != file->ucontext)
@@ -1073,9 +1073,9 @@ ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file,
 
 	idr_remove(&ib_uverbs_qp_idr, cmd.qp_handle);
 
-	down(&file->mutex);
+	mutex_lock(&file->mutex);
 	list_del(&uobj->uevent.uobject.list);
-	up(&file->mutex);
+	mutex_unlock(&file->mutex);
 
 	ib_uverbs_release_uevent(file, &uobj->uevent);
 
@@ -1088,7 +1088,7 @@ ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file,
 		ret = -EFAULT;
 
 out:
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	return ret ? ret : in_len;
 }
@@ -1119,7 +1119,7 @@ ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file,
 	if (!user_wr)
 		return -ENOMEM;
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 
 	qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle);
 	if (!qp || qp->uobject->context != file->ucontext)
@@ -1224,7 +1224,7 @@ ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file,
 		ret = -EFAULT;
 
 out:
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	while (wr) {
 		next = wr->next;
@@ -1341,7 +1341,7 @@ ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file,
 	if (IS_ERR(wr))
 		return PTR_ERR(wr);
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 
 	qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle);
 	if (!qp || qp->uobject->context != file->ucontext)
@@ -1362,7 +1362,7 @@ ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file,
 		ret = -EFAULT;
 
 out:
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	while (wr) {
 		next = wr->next;
@@ -1392,7 +1392,7 @@ ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file,
 	if (IS_ERR(wr))
 		return PTR_ERR(wr);
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 
 	srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle);
 	if (!srq || srq->uobject->context != file->ucontext)
@@ -1413,7 +1413,7 @@ ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file,
 		ret = -EFAULT;
 
 out:
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	while (wr) {
 		next = wr->next;
@@ -1446,7 +1446,7 @@ ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file,
 	if (!uobj)
 		return -ENOMEM;
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 
 	pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle);
 	if (!pd || pd->uobject->context != file->ucontext) {
@@ -1498,11 +1498,11 @@ retry:
 		goto err_idr;
 	}
 
-	down(&file->mutex);
+	mutex_lock(&file->mutex);
 	list_add_tail(&uobj->list, &file->ucontext->ah_list);
-	up(&file->mutex);
+	mutex_unlock(&file->mutex);
 
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	return in_len;
 
@@ -1513,7 +1513,7 @@ err_destroy:
 	ib_destroy_ah(ah);
 
 err_up:
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	kfree(uobj);
 	return ret;
@@ -1530,7 +1530,7 @@ ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file,
 	if (copy_from_user(&cmd, buf, sizeof cmd))
 		return -EFAULT;
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 
 	ah = idr_find(&ib_uverbs_ah_idr, cmd.ah_handle);
 	if (!ah || ah->uobject->context != file->ucontext)
@@ -1544,14 +1544,14 @@ ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file,
 
 	idr_remove(&ib_uverbs_ah_idr, cmd.ah_handle);
 
-	down(&file->mutex);
+	mutex_lock(&file->mutex);
 	list_del(&uobj->list);
-	up(&file->mutex);
+	mutex_unlock(&file->mutex);
 
 	kfree(uobj);
 
 out:
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	return ret ? ret : in_len;
 }
@@ -1569,7 +1569,7 @@ ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file,
 	if (copy_from_user(&cmd, buf, sizeof cmd))
 		return -EFAULT;
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 
 	qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle);
 	if (!qp || qp->uobject->context != file->ucontext)
@@ -1602,7 +1602,7 @@ ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file,
 		kfree(mcast);
 
 out:
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	return ret ? ret : in_len;
 }
@@ -1620,7 +1620,7 @@ ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file,
 	if (copy_from_user(&cmd, buf, sizeof cmd))
 		return -EFAULT;
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 
 	qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle);
 	if (!qp || qp->uobject->context != file->ucontext)
@@ -1641,7 +1641,7 @@ ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file,
 		}
 
 out:
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	return ret ? ret : in_len;
 }
@@ -1673,7 +1673,7 @@ ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file,
 	if (!uobj)
 		return -ENOMEM;
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 
 	pd  = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle);
 
@@ -1730,11 +1730,11 @@ retry:
 		goto err_idr;
 	}
 
-	down(&file->mutex);
+	mutex_lock(&file->mutex);
 	list_add_tail(&uobj->uobject.list, &file->ucontext->srq_list);
-	up(&file->mutex);
+	mutex_unlock(&file->mutex);
 
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	return in_len;
 
@@ -1746,7 +1746,7 @@ err_destroy:
 	atomic_dec(&pd->usecnt);
 
 err_up:
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	kfree(uobj);
 	return ret;
@@ -1764,7 +1764,7 @@ ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file,
 	if (copy_from_user(&cmd, buf, sizeof cmd))
 		return -EFAULT;
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 
 	srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle);
 	if (!srq || srq->uobject->context != file->ucontext) {
@@ -1778,7 +1778,7 @@ ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file,
 	ret = ib_modify_srq(srq, &attr, cmd.attr_mask);
 
 out:
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	return ret ? ret : in_len;
 }
@@ -1796,7 +1796,7 @@ ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file,
 	if (copy_from_user(&cmd, buf, sizeof cmd))
 		return -EFAULT;
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 
 	memset(&resp, 0, sizeof resp);
 
@@ -1812,9 +1812,9 @@ ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file,
 
 	idr_remove(&ib_uverbs_srq_idr, cmd.srq_handle);
 
-	down(&file->mutex);
+	mutex_lock(&file->mutex);
 	list_del(&uobj->uobject.list);
-	up(&file->mutex);
+	mutex_unlock(&file->mutex);
 
 	ib_uverbs_release_uevent(file, uobj);
 
@@ -1827,7 +1827,7 @@ ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file,
 		ret = -EFAULT;
 
 out:
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	return ret ? ret : in_len;
 }
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index 81737bd..96ea79b 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -66,7 +66,7 @@ enum {
 
 static struct class *uverbs_class;
 
-DECLARE_MUTEX(ib_uverbs_idr_mutex);
+DEFINE_MUTEX(ib_uverbs_idr_mutex);
 DEFINE_IDR(ib_uverbs_pd_idr);
 DEFINE_IDR(ib_uverbs_mr_idr);
 DEFINE_IDR(ib_uverbs_mw_idr);
@@ -180,7 +180,7 @@ static int ib_uverbs_cleanup_ucontext(struct ib_uverbs_file *file,
 	if (!context)
 		return 0;
 
-	down(&ib_uverbs_idr_mutex);
+	mutex_lock(&ib_uverbs_idr_mutex);
 
 	list_for_each_entry_safe(uobj, tmp, &context->ah_list, list) {
 		struct ib_ah *ah = idr_find(&ib_uverbs_ah_idr, uobj->id);
@@ -250,7 +250,7 @@ static int ib_uverbs_cleanup_ucontext(struct ib_uverbs_file *file,
 		kfree(uobj);
 	}
 
-	up(&ib_uverbs_idr_mutex);
+	mutex_unlock(&ib_uverbs_idr_mutex);
 
 	return context->device->dealloc_ucontext(context);
 }
@@ -653,7 +653,7 @@ static int ib_uverbs_open(struct inode *inode, struct file *filp)
 	file->ucontext	 = NULL;
 	file->async_file = NULL;
 	kref_init(&file->ref);
-	init_MUTEX(&file->mutex);
+	mutex_init(&file->mutex);
 
 	filp->private_data = file;