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| author | Claudiu Beznea <claudiu.beznea@microchip.com> | 2022-07-27 12:08:13 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-07-27 12:03:13 +0100 |
| commit | 768ac4f12ca0fda935f58eb8c5120e9d795bc6e3 (patch) | |
| tree | ea35446848dabafac129bc1a68d441dcada04f3b /sound/soc | |
| parent | f2906aa863381afb0015a9eb7fefad885d4e5a56 (diff) | |
| download | linux-stable-768ac4f12ca0fda935f58eb8c5120e9d795bc6e3.tar.gz linux-stable-768ac4f12ca0fda935f58eb8c5120e9d795bc6e3.tar.bz2 linux-stable-768ac4f12ca0fda935f58eb8c5120e9d795bc6e3.zip | |
ASoC: mchp-spdifrx: disable end of block interrupt on failures
Disable end of block interrupt in case of wait for completion timeout
or errors to undo previously enable operation (done in
mchp_spdifrx_isr_blockend_en()). Otherwise we can end up with an
unbalanced reference counter for this interrupt.
Fixes: ef265c55c1ac ("ASoC: mchp-spdifrx: add driver for SPDIF RX")
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220727090814.2446111-2-claudiu.beznea@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc')
| -rw-r--r-- | sound/soc/atmel/mchp-spdifrx.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/sound/soc/atmel/mchp-spdifrx.c b/sound/soc/atmel/mchp-spdifrx.c index 5fc968483f2c..a7baa0385ec5 100644 --- a/sound/soc/atmel/mchp-spdifrx.c +++ b/sound/soc/atmel/mchp-spdifrx.c @@ -288,15 +288,17 @@ static void mchp_spdifrx_isr_blockend_en(struct mchp_spdifrx_dev *dev) spin_unlock_irqrestore(&dev->blockend_lock, flags); } -/* called from atomic context only */ +/* called from atomic/non-atomic context */ static void mchp_spdifrx_isr_blockend_dis(struct mchp_spdifrx_dev *dev) { - spin_lock(&dev->blockend_lock); + unsigned long flags; + + spin_lock_irqsave(&dev->blockend_lock, flags); dev->blockend_refcount--; /* don't enable BLOCKEND interrupt if it's already enabled */ if (dev->blockend_refcount == 0) regmap_write(dev->regmap, SPDIFRX_IDR, SPDIFRX_IR_BLOCKEND); - spin_unlock(&dev->blockend_lock); + spin_unlock_irqrestore(&dev->blockend_lock, flags); } static irqreturn_t mchp_spdif_interrupt(int irq, void *dev_id) @@ -575,6 +577,7 @@ static int mchp_spdifrx_subcode_ch_get(struct mchp_spdifrx_dev *dev, if (ret <= 0) { dev_dbg(dev->dev, "user data for channel %d timeout\n", channel); + mchp_spdifrx_isr_blockend_dis(dev); return ret; } |