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authorDmitry Osipenko <dmitry.osipenko@collabora.com>2022-05-20 21:14:32 +0300
committerVinod Koul <vkoul@kernel.org>2022-07-06 08:19:28 +0300
commitb64b3b2f1d81f83519582e1feee87d77f51f5f17 (patch)
treedd6c76371b5e6de6deff1440b3622d73dd032e11 /drivers
parent8ffccd119a5908b240a26182be44c0ff3d1e3d85 (diff)
downloadlinux-b64b3b2f1d81f83519582e1feee87d77f51f5f17.tar.xz
dmaengine: pl330: Fix lockdep warning about non-static key
The DEFINE_SPINLOCK() macro shouldn't be used for dynamically allocated spinlocks. The lockdep warns about this and disables locking validator. Fix the warning by making lock static. INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. Hardware name: Radxa ROCK Pi 4C (DT) Call trace: dump_backtrace.part.0+0xcc/0xe0 show_stack+0x18/0x6c dump_stack_lvl+0x8c/0xb8 dump_stack+0x18/0x34 register_lock_class+0x4a8/0x4cc __lock_acquire+0x78/0x20cc lock_acquire.part.0+0xe0/0x230 lock_acquire+0x68/0x84 _raw_spin_lock_irqsave+0x84/0xc4 add_desc+0x44/0xc0 pl330_get_desc+0x15c/0x1d0 pl330_prep_dma_cyclic+0x100/0x270 snd_dmaengine_pcm_trigger+0xec/0x1c0 dmaengine_pcm_trigger+0x18/0x24 ... Fixes: e588710311ee ("dmaengine: pl330: fix descriptor allocation fail") Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com> Link: https://lore.kernel.org/r/20220520181432.149904-1-dmitry.osipenko@collabora.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/dma/pl330.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index 858400e42ec0..09915a5cba3e 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -2589,7 +2589,7 @@ static struct dma_pl330_desc *pl330_get_desc(struct dma_pl330_chan *pch)
/* If the DMAC pool is empty, alloc new */
if (!desc) {
- DEFINE_SPINLOCK(lock);
+ static DEFINE_SPINLOCK(lock);
LIST_HEAD(pool);
if (!add_desc(&pool, &lock, GFP_ATOMIC, 1))