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| author |   Jonathan Cameron <jic23@kernel.org> | 2016-05-14 18:42:08 +0100 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2016-05-29 15:00:10 +0100 |
| commit | ef2d71d6b7fbbb57e332883d8fad39f2adb9199e (patch) | |
| tree | 1939a31a26064c95c736e8cd65fac2239ea399ec /drivers/iio/industrialio-trigger.c | |
| parent | iio: adc: ti-ads1015: add datasheet names (diff) | |
| download | wireguard-linux-ef2d71d6b7fbbb57e332883d8fad39f2adb9199e.tar.xz wireguard-linux-ef2d71d6b7fbbb57e332883d8fad39f2adb9199e.zip | |
iio: triggers: Make trigger ops structure explicitly non optional.
This structure has not been optional for a long time (if ever) but the
code implies that it is. As we then use it later in a fashion that would
crash if it was in fact NULL, it's inconsistent so fix it up by removing
unnecessary checks.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/industrialio-trigger.c')
| -rw-r--r-- | drivers/iio/industrialio-trigger.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c index ae2806aafb72..672911293987 100644 --- a/drivers/iio/industrialio-trigger.c +++ b/drivers/iio/industrialio-trigger.c @@ -68,6 +68,10 @@ int iio_trigger_register(struct iio_trigger *trig_info) { int ret; + /* trig_info->ops is required for the module member */ + if (!trig_info->ops) + return -EINVAL; + trig_info->id = ida_simple_get(&iio_trigger_ida, 0, 0, GFP_KERNEL); if (trig_info->id < 0) return trig_info->id; @@ -164,8 +168,7 @@ EXPORT_SYMBOL(iio_trigger_poll_chained); void iio_trigger_notify_done(struct iio_trigger *trig) { - if (atomic_dec_and_test(&trig->use_count) && trig->ops && - trig->ops->try_reenable) + if (atomic_dec_and_test(&trig->use_count) && trig->ops->try_reenable) if (trig->ops->try_reenable(trig)) /* Missed an interrupt so launch new poll now */ iio_trigger_poll(trig); @@ -219,7 +222,7 @@ static int iio_trigger_attach_poll_func(struct iio_trigger *trig, return ret; } - if (trig->ops && trig->ops->set_trigger_state && notinuse) { + if (trig->ops->set_trigger_state && notinuse) { ret = trig->ops->set_trigger_state(trig, true); if (ret < 0) module_put(pf->indio_dev->info->driver_module); @@ -236,7 +239,7 @@ static int iio_trigger_detach_poll_func(struct iio_trigger *trig, = (bitmap_weight(trig->pool, CONFIG_IIO_CONSUMERS_PER_TRIGGER) == 1); - if (trig->ops && trig->ops->set_trigger_state && no_other_users) { + if (trig->ops->set_trigger_state && no_other_users) { ret = trig->ops->set_trigger_state(trig, false); if (ret) return ret; @@ -358,7 +361,7 @@ static ssize_t iio_trigger_write_current(struct device *dev, return ret; } - if (trig && trig->ops && trig->ops->validate_device) { + if (trig && trig->ops->validate_device) { ret = trig->ops->validate_device(trig, indio_dev); if (ret) return ret; |