| Message ID | 20191216105328.15198-6-s.hauer@pengutronix.de (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
| Series | dmaengine: virt-dma related fixes | expand |
diff --git a/drivers/dma/virt-dma.h b/drivers/dma/virt-dma.h index e213137b6bc1..e9f5250fbe4d 100644 --- a/drivers/dma/virt-dma.h +++ b/drivers/dma/virt-dma.h @@ -113,10 +113,15 @@ static inline void vchan_vdesc_fini(struct virt_dma_desc *vd) { struct virt_dma_chan *vc = to_virt_chan(vd->tx.chan); - if (dmaengine_desc_test_reuse(&vd->tx)) + if (dmaengine_desc_test_reuse(&vd->tx)) { + unsigned long flags; + + spin_lock_irqsave(&vc->lock, flags); list_add(&vd->node, &vc->desc_allocated); - else + spin_unlock_irqrestore(&vc->lock, flags); + } else { vc->desc_free(vd); + } } /**
All list operations are protected by &vc->lock. As vchan_vdesc_fini() is called unlocked add the missing locking around the list operations. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> --- drivers/dma/virt-dma.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)