[PATCH] dmaengine: mediatek: Fix a flag reuse error in mtk_cqdma_tx_status()

[Qiu-ji Chen]

Fixed a flag reuse bug in the mtk_cqdma_tx_status() function.

Fixes: 157ae5ffd76a ("dmaengine: mediatek: Fix a possible deadlock error in mtk_cqdma_tx_status()")
Cc: stable at vger.kernel.org
Reported-by: kernel test robot <lkp at intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202505270641.MStzJUfU-lkp@intel.com/
Signed-off-by: Qiu-ji Chen <chenqiuji666 at gmail.com>
---
 drivers/dma/mediatek/mtk-cqdma.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/dma/mediatek/mtk-cqdma.c b/drivers/dma/mediatek/mtk-cqdma.c
index 47c8adfdc155..f7b870d2ca90 100644
--- a/drivers/dma/mediatek/mtk-cqdma.c
+++ b/drivers/dma/mediatek/mtk-cqdma.c
@@ -441,18 +441,19 @@ static enum dma_status mtk_cqdma_tx_status(struct dma_chan *c,
 	struct mtk_cqdma_vdesc *cvd;
 	struct virt_dma_desc *vd;
 	enum dma_status ret;
-	unsigned long flags;
+	unsigned long pc_flags;
+	unsigned long vc_flags;
 	size_t bytes = 0;
 
 	ret = dma_cookie_status(c, cookie, txstate);
 	if (ret == DMA_COMPLETE || !txstate)
 		return ret;
 
-	spin_lock_irqsave(&cvc->pc->lock, flags);
-	spin_lock_irqsave(&cvc->vc.lock, flags);
+	spin_lock_irqsave(&cvc->pc->lock, pc_flags);
+	spin_lock_irqsave(&cvc->vc.lock, vc_flags);
 	vd = mtk_cqdma_find_active_desc(c, cookie);
-	spin_unlock_irqrestore(&cvc->vc.lock, flags);
-	spin_unlock_irqrestore(&cvc->pc->lock, flags);
+	spin_unlock_irqrestore(&cvc->vc.lock, vc_flags);
+	spin_unlock_irqrestore(&cvc->pc->lock, pc_flags);
 
 	if (vd) {
 		cvd = to_cqdma_vdesc(vd);
-- 
2.34.1