| From | Bartosz Golaszewski <> | Subject | [PATCH v4 10/13] gpiolib: emit a debug message when adding events to a full kfifo | Date | Tue, 24 Dec 2019 13:07:06 +0100 |
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From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
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> --- drivers/gpio/gpiolib.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index a859c0813e0d..543244355e1c 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -979,6 +979,8 @@ 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; } -- 2.23.0
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