From: Nuno Sá <nuno.sa@analog.com>
Date: Fri, 19 Dec 2025 15:28:12 +0000 (+0000)
Subject: iio: buffer-dma: Use lockdep for locking annotations
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=09ccc1b65ca6bb61d05f163e063b98d89d4d7d06;p=thirdparty%2Fkernel%2Flinux.git

iio: buffer-dma: Use lockdep for locking annotations

Don't use mutex_is_locked() + WARN_ON() for checking if a specif lock is
taken. Instead use the existing annotations which means
lockdep_assert_held().

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---

diff --git a/drivers/iio/buffer/industrialio-buffer-dma.c b/drivers/iio/buffer/industrialio-buffer-dma.c
index 7a7a9d37339bc..8906feaeb69bc 100644
--- a/drivers/iio/buffer/industrialio-buffer-dma.c
+++ b/drivers/iio/buffer/industrialio-buffer-dma.c
@@ -6,6 +6,7 @@
 
 #include <linux/atomic.h>
 #include <linux/cleanup.h>
+#include <linux/lockdep.h>
 #include <linux/slab.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
@@ -764,7 +765,7 @@ int iio_dma_buffer_enqueue_dmabuf(struct iio_buffer *buffer,
 	bool cookie;
 	int ret;
 
-	WARN_ON(!mutex_is_locked(&queue->lock));
+	lockdep_assert_held(&queue->lock);
 
 	cookie = dma_fence_begin_signalling();