Messages in this thread Patch in this message | | | From | Bartosz Golaszewski <> | Subject | [PATCH v6 4/7] gpiolib: emit a debug message when adding events to a full kfifo | Date | Fri, 24 Jan 2020 18:27:07 +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 66df06a24cfd..4ce34958e335 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; } -- 2.23.0
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