From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753986Ab3LCDo7 (ORCPT ); Mon, 2 Dec 2013 22:44:59 -0500 Received: from bear.ext.ti.com ([192.94.94.41]:56534 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753624Ab3LCDoe (ORCPT ); Mon, 2 Dec 2013 22:44:34 -0500 From: Felipe Balbi To: Linux OMAP Mailing List CC: Aaro Koskinen , , Tony Lindgren , , Linux ARM Kernel Mailing List , Linux Kernel Mailing List , Felipe Balbi Subject: [PATCH v2 05/15] mfd: menelaus: Use for_each_set_bit() Date: Mon, 2 Dec 2013 21:42:58 -0600 Message-ID: <1386042188-12246-5-git-send-email-balbi@ti.com> X-Mailer: git-send-email 1.8.4.GIT In-Reply-To: <1386042188-12246-1-git-send-email-balbi@ti.com> References: <1386042188-12246-1-git-send-email-balbi@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org that macro just helps removing some extra line of code and hides ffs() calls. while at that, also fix a variable shadowing bug where 'int irq' was being redeclared inside inner loop while it was also argument to interrupt handler. Signed-off-by: Felipe Balbi --- drivers/mfd/menelaus.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) diff --git a/drivers/mfd/menelaus.c b/drivers/mfd/menelaus.c index 11dc4d3..9ccbb79 100644 --- a/drivers/mfd/menelaus.c +++ b/drivers/mfd/menelaus.c @@ -795,24 +795,22 @@ static irqreturn_t menelaus_irq(int irq, void *_menelaus) { struct menelaus_chip *menelaus = _menelaus; void (*handler)(struct menelaus_chip *menelaus); - unsigned isr; + unsigned long isr; + unsigned long i; isr = (menelaus_read_reg(MENELAUS_INT_STATUS2) & ~menelaus->mask2) << 8; isr |= menelaus_read_reg(MENELAUS_INT_STATUS1) & ~menelaus->mask1; - while (isr) { - int irq = fls(isr) - 1; - isr &= ~(1 << irq); - + for_each_set_bit(i, &isr, 16) { mutex_lock(&menelaus->lock); - menelaus_disable_irq(irq); - menelaus_ack_irq(irq); - handler = menelaus->handlers[irq]; + menelaus_disable_irq(i); + menelaus_ack_irq(i); + handler = menelaus->handlers[i]; if (handler) handler(menelaus); - menelaus_enable_irq(irq); + menelaus_enable_irq(i); mutex_unlock(&menelaus->lock); } -- 1.8.4.GIT