From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: atull@altera.com
Cc: linus.walleij@linaro.org, gnurou@gmail.com,
linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org,
dinguyen@altera.com, delicious.quinoa@gmail.com,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Subject: [PATCH 4/7] gpio: dwapb: use irq_linear_revmap() for the faster lookup
Date: Sat, 22 Mar 2014 17:16:41 +0100 [thread overview]
Message-ID: <1395505004-22650-5-git-send-email-bigeasy@linutronix.de> (raw)
In-Reply-To: <1395505004-22650-1-git-send-email-bigeasy@linutronix.de>
According to irq_linear_revmap() comment, it is slightly faster compared
to irq_find_mapping() since we don't use a radix tree but a linear
mapping.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
drivers/gpio/gpio-dwapb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index 4d25a06b..541b893 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -92,7 +92,7 @@ static void dwapb_irq_handler(u32 irq, struct irq_desc *desc)
while (irq_status) {
int hwirq = fls(irq_status) - 1;
- int gpio_irq = irq_find_mapping(gpio->domain, hwirq);
+ int gpio_irq = irq_linear_revmap(gpio->domain, hwirq);
generic_handle_irq(gpio_irq);
irq_status &= ~BIT(hwirq);
--
1.9.1
next prev parent reply other threads:[~2014-03-22 16:16 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-22 16:16 dwapb: a bug fix a few cleanups, v2 Sebastian Andrzej Siewior
2014-03-22 16:16 ` [PATCH 1/7] ARM: dts: socfpga: add gpio pieces Sebastian Andrzej Siewior
2014-05-05 22:02 ` Olof Johansson
[not found] ` <CAOesGMi_0fT4UbfGUp9jkrwYMXgfxC5gmXOBviU9PjAutPdHiw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-05-06 15:01 ` Alan Tull
2014-05-13 8:45 ` Linus Walleij
2014-03-22 16:16 ` [PATCH 2/7] gpio: dwapb: correct gpio-cells in binding document Sebastian Andrzej Siewior
2014-03-25 20:49 ` Linus Walleij
2014-03-25 20:57 ` Sebastian Andrzej Siewior
2014-03-25 21:00 ` Linus Walleij
2014-03-22 16:16 ` [PATCH 3/7] gpio: dwapb: drop irq_setup_generic_chip() Sebastian Andrzej Siewior
2014-03-22 16:16 ` Sebastian Andrzej Siewior [this message]
2014-03-22 16:16 ` [PATCH 5/7] gpio: dwapb: use irq_gc_lock() for locking instead bc's lock Sebastian Andrzej Siewior
2014-03-22 16:16 ` [PATCH 6/7] gpio: dwapb: use a second irq chip Sebastian Andrzej Siewior
2014-03-25 18:48 ` delicious quinoa
2014-03-25 19:40 ` Sebastian Andrzej Siewior
2014-03-25 21:36 ` Sebastian Hesselbarth
2014-04-07 9:59 ` Sebastian Andrzej Siewior
2014-04-08 15:11 ` delicious quinoa
2014-04-30 11:13 ` [PATCH 6/7 v2] " Sebastian Andrzej Siewior
2014-05-09 11:46 ` Linus Walleij
2014-05-13 16:17 ` Alan Tull
2014-05-16 15:01 ` Linus Walleij
2014-05-22 9:42 ` Sebastian Andrzej Siewior
2014-05-22 14:08 ` Alan Tull
2014-05-26 21:02 ` Sebastian Andrzej Siewior
2014-05-26 20:58 ` [PATCH v3] " Sebastian Andrzej Siewior
2014-05-27 9:55 ` Jamie Iles
2014-05-27 14:21 ` Linus Walleij
2014-05-27 16:30 ` Sebastian Andrzej Siewior
2014-05-28 9:01 ` Linus Walleij
2014-05-28 9:26 ` Sebastian Andrzej Siewior
2014-03-22 16:16 ` [PATCH 7/7] gpio: dwapb: use d->mask instead od BIT(bit) Sebastian Andrzej Siewior
2014-03-25 2:17 ` Alexandre Courbot
2014-03-25 7:54 ` Sebastian Andrzej Siewior
2014-03-25 21:18 ` [PATCH 7/7 v2] " Sebastian Andrzej Siewior
2014-03-25 21:25 ` Joe Perches
2014-03-25 20:45 ` dwapb: a bug fix a few cleanups, v2 Linus Walleij
2014-03-25 21:26 ` Sebastian Hesselbarth
2014-03-25 21:39 ` Sebastian Hesselbarth
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