ASoC: stm32: spdifrx: fix inconsistent lock state

[mirror_ubuntu-bionic-kernel.git] / sound / soc / stm / stm32_spdifrx.c

diff --git a/sound/soc/stm/stm32_spdifrx.c b/sound/soc/stm/stm32_spdifrx.c
index b9bdefcd3e104a7f138803200be77b51648c1802..efcbee35743a990d8aaa114438e32c7a81e0c1c6 100644 (file)
--- a/sound/soc/stm/stm32_spdifrx.c
+++ b/sound/soc/stm/stm32_spdifrx.c
@@ -313,6 +313,7 @@ static void stm32_spdifrx_dma_ctrl_stop(struct stm32_spdifrx_data *spdifrx)
 static int stm32_spdifrx_start_sync(struct stm32_spdifrx_data *spdifrx)
 {
        int cr, cr_mask, imr, ret;
+       unsigned long flags;
 
        /* Enable IRQs */
        imr = SPDIFRX_IMR_IFEIE | SPDIFRX_IMR_SYNCDIE | SPDIFRX_IMR_PERRIE;
@@ -320,7 +321,7 @@ static int stm32_spdifrx_start_sync(struct stm32_spdifrx_data *spdifrx)
        if (ret)
                return ret;
 
-       spin_lock(&spdifrx->lock);
+       spin_lock_irqsave(&spdifrx->lock, flags);
 
        spdifrx->refcount++;
 
@@ -353,7 +354,7 @@ static int stm32_spdifrx_start_sync(struct stm32_spdifrx_data *spdifrx)
                                "Failed to start synchronization\n");
        }
 
-       spin_unlock(&spdifrx->lock);
+       spin_unlock_irqrestore(&spdifrx->lock, flags);
 
        return ret;
 }
@@ -361,11 +362,12 @@ static int stm32_spdifrx_start_sync(struct stm32_spdifrx_data *spdifrx)
 static void stm32_spdifrx_stop(struct stm32_spdifrx_data *spdifrx)
 {
        int cr, cr_mask, reg;
+       unsigned long flags;
 
-       spin_lock(&spdifrx->lock);
+       spin_lock_irqsave(&spdifrx->lock, flags);
 
        if (--spdifrx->refcount) {
-               spin_unlock(&spdifrx->lock);
+               spin_unlock_irqrestore(&spdifrx->lock, flags);
                return;
        }
 
@@ -384,7 +386,7 @@ static void stm32_spdifrx_stop(struct stm32_spdifrx_data *spdifrx)
        regmap_read(spdifrx->regmap, STM32_SPDIFRX_DR, &reg);
        regmap_read(spdifrx->regmap, STM32_SPDIFRX_CSR, &reg);
 
-       spin_unlock(&spdifrx->lock);
+       spin_unlock_irqrestore(&spdifrx->lock, flags);
 }
 
 static int stm32_spdifrx_dma_ctrl_register(struct device *dev,