s5p_jpeg_device_run and s5p_jpeg_runtime_resume callbacks should
have spin_lock protection as they alter device registers.
Signed-off-by: Jacek Anaszewski <j.anaszewski@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
drivers/media/platform/s5p-jpeg/jpeg-core.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c
index 328bb8b..650c4d3 100644
--- a/drivers/media/platform/s5p-jpeg/jpeg-core.c
+++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c
@@ -930,7 +930,9 @@ static void s5p_jpeg_device_run(void *priv)
struct s5p_jpeg_ctx *ctx = priv;
struct s5p_jpeg *jpeg = ctx->jpeg;
struct vb2_buffer *src_buf, *dst_buf;
- unsigned long src_addr, dst_addr;
+ unsigned long src_addr, dst_addr, flags;
+
+ spin_lock_irqsave(&ctx->jpeg->slock, flags);
src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
@@ -998,6 +1000,8 @@ static void s5p_jpeg_device_run(void *priv)
}
jpeg_start(jpeg->regs);
+
+ spin_unlock_irqrestore(&ctx->jpeg->slock, flags);
}
static int s5p_jpeg_job_ready(void *priv)
@@ -1418,9 +1422,12 @@ static int s5p_jpeg_runtime_suspend(struct device *dev)
static int s5p_jpeg_runtime_resume(struct device *dev)
{
struct s5p_jpeg *jpeg = dev_get_drvdata(dev);
+ unsigned long flags;
clk_prepare_enable(jpeg->clk);
+ spin_lock_irqsave(&jpeg->slock, flags);
+
/*
* JPEG IP allows storing two Huffman tables for each component
* We fill table 0 for each component
@@ -1430,6 +1437,8 @@ static int s5p_jpeg_runtime_resume(struct device *dev)
s5p_jpeg_set_hactbl(jpeg->regs);
s5p_jpeg_set_hactblg(jpeg->regs);
+ spin_unlock_irqrestore(&jpeg->slock, flags);
+
return 0;
}
--
1.7.9.5
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