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Merge "input: qcom-hv-haptics: check playing effect pointer in IRQ handler"

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qctecmdr 2021-01-22 13:46:45 -08:00 • committed by Gerrit - the friendly Code Review server
commit 78bb563bf8
1 changed files with 8 additions and 3 deletions
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11
drivers/input/misc/qcom-hv-haptics.c
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@ -2500,8 +2500,8 @@ static int haptics_hw_init(struct haptics_chip *chip)
static irqreturn_t fifo_empty_irq_handler(int irq, void *data)
{
struct haptics_chip *chip = data;
struct fifo_cfg *fifo = chip->play.effect->fifo;
struct fifo_play_status *status = &chip->play.fifo_status;
struct fifo_cfg *fifo;
struct fifo_play_status *status;
u32 samples_left;
u8 *samples, val;
int rc, num;
@ -2515,7 +2515,8 @@ static irqreturn_t fifo_empty_irq_handler(int irq, void *data)
return IRQ_HANDLED;
mutex_lock(&chip->play.lock);
if (atomic_read(&chip->play.fifo_status.written_done) == 1) {
status = &chip->play.fifo_status;
if (atomic_read(&status->written_done) == 1) {
/*
* Check the FIFO real time fill status before stopping
* play to make sure that all FIFO samples can be played
@ -2540,6 +2541,10 @@ static irqreturn_t fifo_empty_irq_handler(int irq, void *data)
goto unlock;
}
if (!chip->play.effect)
goto unlock;
fifo = chip->play.effect->fifo;
if (!fifo || !fifo->samples) {
dev_err(chip->dev, "no FIFO samples available\n");
goto unlock;