From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934575Ab1CYLNY (ORCPT ); Fri, 25 Mar 2011 07:13:24 -0400 Received: from www.linutronix.de ([62.245.132.108]:38585 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S934497Ab1CYLMc (ORCPT ); Fri, 25 Mar 2011 07:12:32 -0400 Message-Id: <20110325111218.249659750@linutronix.de> User-Agent: quilt/0.48-1 Date: Fri, 25 Mar 2011 11:12:31 -0000 From: Thomas Gleixner To: LKML Cc: Andrew Morton , Samuel Ortiz Subject: [patch 07/10] mfd: twl4030: Cleanup interrupt handling References: <20110325110939.701487744@linutronix.de> Content-Disposition: inline; filename=mfd-twl4.patch X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org irq_desc checking in a function which is called with that irq descriptor locked, is pointless. Equally pointless as the irq desc check in the interrupt service routine. The driver sets those lines up, so that cant go away magically. Remove the open coded handler magic and use the proper accessor. No need to fiddle with irq_desc in the type setting function. The original value is in irq_data and the core code stores the new setting when the return value is 0. This driver needs to be converted to threaded interrupts and buslock. Signed-off-by: Thomas Gleixner --- drivers/mfd/twl4030-irq.c | 46 ++++++++-------------------------------------- 1 file changed, 8 insertions(+), 38 deletions(-) Index: linux-2.6-tip/drivers/mfd/twl4030-irq.c =================================================================== --- linux-2.6-tip.orig/drivers/mfd/twl4030-irq.c +++ linux-2.6-tip/drivers/mfd/twl4030-irq.c @@ -320,24 +320,8 @@ static int twl4030_irq_thread(void *data for (module_irq = twl4030_irq_base; pih_isr; pih_isr >>= 1, module_irq++) { - if (pih_isr & 0x1) { - struct irq_desc *d = irq_to_desc(module_irq); - - if (!d) { - pr_err("twl4030: Invalid SIH IRQ: %d\n", - module_irq); - return -EINVAL; - } - - /* These can't be masked ... always warn - * if we get any surprises. - */ - if (d->status & IRQ_DISABLED) - note_interrupt(module_irq, d, - IRQ_NONE); - else - d->handle_irq(module_irq, d); - } + if (pih_isr & 0x1) + generic_handle_irq(module_irq); } local_irq_enable(); @@ -560,24 +544,18 @@ static void twl4030_sih_do_edge(struct w /* Modify only the bits we know must change */ while (edge_change) { int i = fls(edge_change) - 1; - struct irq_desc *d = irq_to_desc(i + agent->irq_base); + struct irq_data *idata = irq_get_irq_data(i + agent->irq_base); int byte = 1 + (i >> 2); int off = (i & 0x3) * 2; - - if (!d) { - pr_err("twl4030: Invalid IRQ: %d\n", - i + agent->irq_base); - return; - } + unsigned int type; bytes[byte] &= ~(0x03 << off); - raw_spin_lock_irq(&d->lock); - if (d->status & IRQ_TYPE_EDGE_RISING) + type = irqd_get_trigger_type(idata); + if (type & IRQ_TYPE_EDGE_RISING) bytes[byte] |= BIT(off + 1); - if (d->status & IRQ_TYPE_EDGE_FALLING) + if (type & IRQ_TYPE_EDGE_FALLING) bytes[byte] |= BIT(off + 0); - raw_spin_unlock_irq(&d->lock); edge_change &= ~BIT(i); } @@ -626,21 +604,13 @@ static void twl4030_sih_unmask(struct ir static int twl4030_sih_set_type(struct irq_data *data, unsigned trigger) { struct sih_agent *sih = irq_data_get_irq_chip_data(data); - struct irq_desc *desc = irq_to_desc(data->irq); unsigned long flags; - if (!desc) { - pr_err("twl4030: Invalid IRQ: %d\n", data->irq); - return -EINVAL; - } - if (trigger & ~(IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING)) return -EINVAL; spin_lock_irqsave(&sih_agent_lock, flags); - if ((desc->status & IRQ_TYPE_SENSE_MASK) != trigger) { - desc->status &= ~IRQ_TYPE_SENSE_MASK; - desc->status |= trigger; + if (irqd_get_trigger_type(data) != trigger) { sih->edge_change |= BIT(data->irq - sih->irq_base); queue_work(wq, &sih->edge_work); }