diff options
| author | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2019-11-29 13:22:18 +0300 |
|---|---|---|
| committer | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2020-02-12 14:05:47 +0300 |
| commit | 248ae1752e91438cb7cfc8432b88bc34410e8e4e (patch) | |
| tree | db7a52164916dc76a618f0b2e8ed9b398a04152c /drivers/gpio/gpiolib.c | |
| parent | dea9c80ee6726986d90260f135c83545427cbc4e (diff) | |
| download | linux-248ae1752e91438cb7cfc8432b88bc34410e8e4e.tar.xz | |
gpiolib: emit a debug message when adding events to a full kfifo
Currently if the line-event kfifo is full, we just silently drop any new
events. Add a ratelimited debug message so that we at least have some
trace in the kernel log of event overflow.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Diffstat (limited to 'drivers/gpio/gpiolib.c')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 43d98309e725..36afe0b2b150 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -978,6 +978,8 @@ static irqreturn_t lineevent_irq_thread(int irq, void *p) 1, &le->wait.lock); if (ret) wake_up_poll(&le->wait, EPOLLIN); + else + pr_debug_ratelimited("event FIFO is full - event dropped\n"); return IRQ_HANDLED; } |