| Message ID | 20200608112211.12125-6-andrzej.p@collabora.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Support inhibiting input devices | expand |
On Mon, Jun 08, 2020 at 01:22:09PM +0200, Andrzej Pietrasiewicz wrote: > A new helper is available, so use it. Inspecting 'users' member of > input_dev requires taking device's mutex. [...] > --- a/drivers/iio/adc/exynos_adc.c > +++ b/drivers/iio/adc/exynos_adc.c > @@ -633,7 +633,9 @@ static irqreturn_t exynos_ts_isr(int irq, void *dev_id) > bool pressed; > int ret; > > - while (info->input->users) { > + mutex_lock(&info->input->mutex); > + while (input_device_enabled(info->input)) { > + mutex_unlock(&info->input->mutex); > ret = exynos_read_s3c64xx_ts(dev, &x, &y); > if (ret == -ETIMEDOUT) > break; > @@ -651,6 +653,8 @@ static irqreturn_t exynos_ts_isr(int irq, void *dev_id) > input_sync(info->input); > > usleep_range(1000, 1100); > + > + mutex_lock(&info->input->mutex); > } Missed an mutex_unlock() here. > > writel(0, ADC_V1_CLRINTPNDNUP(info->regs)); Best Regards, Michał Mirosław
diff --git a/drivers/iio/adc/exynos_adc.c b/drivers/iio/adc/exynos_adc.c index 22131a677445..9a1ddda8c5db 100644 --- a/drivers/iio/adc/exynos_adc.c +++ b/drivers/iio/adc/exynos_adc.c @@ -633,7 +633,9 @@ static irqreturn_t exynos_ts_isr(int irq, void *dev_id) bool pressed; int ret; - while (info->input->users) { + mutex_lock(&info->input->mutex); + while (input_device_enabled(info->input)) { + mutex_unlock(&info->input->mutex); ret = exynos_read_s3c64xx_ts(dev, &x, &y); if (ret == -ETIMEDOUT) break; @@ -651,6 +653,8 @@ static irqreturn_t exynos_ts_isr(int irq, void *dev_id) input_sync(info->input); usleep_range(1000, 1100); + + mutex_lock(&info->input->mutex); } writel(0, ADC_V1_CLRINTPNDNUP(info->regs));
A new helper is available, so use it. Inspecting 'users' member of input_dev requires taking device's mutex. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com> --- drivers/iio/adc/exynos_adc.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)