From ef24ba7091517d2bbf9ba2cb4256c0dccd51d248 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Tue, 6 Sep 2016 21:53:24 +1000 Subject: powerpc: Remove all usages of NO_IRQ NO_IRQ has been == 0 on powerpc for just over ten years (since commit 0ebfff1491ef ("[POWERPC] Add new interrupt mapping core and change platforms to use it")). It's also 0 on most other arches. Although it's fairly harmless, every now and then it causes confusion when a driver is built on powerpc and another arch which doesn't define NO_IRQ. There's at least 6 definitions of NO_IRQ in drivers/, at least some of which are to work around that problem. So we'd like to remove it. This is fairly trivial in the arch code, we just convert: if (irq == NO_IRQ) to if (!irq) if (irq != NO_IRQ) to if (irq) irq = NO_IRQ; to irq = 0; return NO_IRQ; to return 0; And a few other odd cases as well. At least for now we keep the #define NO_IRQ, because there is driver code that uses NO_IRQ and the fixes to remove those will go via other trees. Note we also change some occurrences in PPC sound drivers, drivers/ps3, and drivers/macintosh. Signed-off-by: Michael Ellerman --- drivers/macintosh/macio_asic.c | 4 ++-- drivers/macintosh/rack-meter.c | 2 +- drivers/macintosh/smu.c | 18 +++++++++--------- drivers/macintosh/via-cuda.c | 2 +- drivers/macintosh/via-pmu.c | 6 +++--- drivers/ps3/ps3-vuart.c | 4 ++-- 6 files changed, 18 insertions(+), 18 deletions(-) (limited to 'drivers') diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c index b6819f0fc608..3f041b187033 100644 --- a/drivers/macintosh/macio_asic.c +++ b/drivers/macintosh/macio_asic.c @@ -236,7 +236,7 @@ static void macio_create_fixup_irq(struct macio_dev *dev, int index, unsigned int irq; irq = irq_create_mapping(NULL, line); - if (irq != NO_IRQ) { + if (!irq) { dev->interrupt[index].start = irq; dev->interrupt[index].flags = IORESOURCE_IRQ; dev->interrupt[index].name = dev_name(&dev->ofdev.dev); @@ -299,7 +299,7 @@ static void macio_setup_interrupts(struct macio_dev *dev) break; res = &dev->interrupt[j]; irq = irq_of_parse_and_map(np, i++); - if (irq == NO_IRQ) + if (!irq) break; res->start = irq; res->flags = IORESOURCE_IRQ; diff --git a/drivers/macintosh/rack-meter.c b/drivers/macintosh/rack-meter.c index 465c52219639..775527135b93 100644 --- a/drivers/macintosh/rack-meter.c +++ b/drivers/macintosh/rack-meter.c @@ -427,7 +427,7 @@ static int rackmeter_probe(struct macio_dev* mdev, rm->irq = macio_irq(mdev, 1); #else rm->irq = irq_of_parse_and_map(i2s, 1); - if (rm->irq == NO_IRQ || + if (!rm->irq || of_address_to_resource(i2s, 0, &ri2s) || of_address_to_resource(i2s, 1, &rdma)) { printk(KERN_ERR diff --git a/drivers/macintosh/smu.c b/drivers/macintosh/smu.c index d6f72c826c1c..08edb2c25b60 100644 --- a/drivers/macintosh/smu.c +++ b/drivers/macintosh/smu.c @@ -279,7 +279,7 @@ int smu_queue_cmd(struct smu_cmd *cmd) spin_unlock_irqrestore(&smu->lock, flags); /* Workaround for early calls when irq isn't available */ - if (!smu_irq_inited || smu->db_irq == NO_IRQ) + if (!smu_irq_inited || !smu->db_irq) smu_spinwait_cmd(cmd); return 0; @@ -498,8 +498,8 @@ int __init smu_init (void) INIT_LIST_HEAD(&smu->cmd_list); INIT_LIST_HEAD(&smu->cmd_i2c_list); smu->of_node = np; - smu->db_irq = NO_IRQ; - smu->msg_irq = NO_IRQ; + smu->db_irq = 0; + smu->msg_irq = 0; /* smu_cmdbuf_abs is in the low 2G of RAM, can be converted to a * 32 bits value safely @@ -587,13 +587,13 @@ static int smu_late_init(void) if (smu->db_node) { smu->db_irq = irq_of_parse_and_map(smu->db_node, 0); - if (smu->db_irq == NO_IRQ) + if (!smu->db_irq) printk(KERN_ERR "smu: failed to map irq for node %s\n", smu->db_node->full_name); } if (smu->msg_node) { smu->msg_irq = irq_of_parse_and_map(smu->msg_node, 0); - if (smu->msg_irq == NO_IRQ) + if (!smu->msg_irq) printk(KERN_ERR "smu: failed to map irq for node %s\n", smu->msg_node->full_name); } @@ -602,23 +602,23 @@ static int smu_late_init(void) * Try to request the interrupts */ - if (smu->db_irq != NO_IRQ) { + if (smu->db_irq) { if (request_irq(smu->db_irq, smu_db_intr, IRQF_SHARED, "SMU doorbell", smu) < 0) { printk(KERN_WARNING "SMU: can't " "request interrupt %d\n", smu->db_irq); - smu->db_irq = NO_IRQ; + smu->db_irq = 0; } } - if (smu->msg_irq != NO_IRQ) { + if (smu->msg_irq) { if (request_irq(smu->msg_irq, smu_msg_intr, IRQF_SHARED, "SMU message", smu) < 0) { printk(KERN_WARNING "SMU: can't " "request interrupt %d\n", smu->msg_irq); - smu->msg_irq = NO_IRQ; + smu->msg_irq = 0; } } diff --git a/drivers/macintosh/via-cuda.c b/drivers/macintosh/via-cuda.c index bad18130f125..2088e23a8002 100644 --- a/drivers/macintosh/via-cuda.c +++ b/drivers/macintosh/via-cuda.c @@ -209,7 +209,7 @@ static int __init via_cuda_start(void) cuda_irq = IRQ_MAC_ADB; #else cuda_irq = irq_of_parse_and_map(vias, 0); - if (cuda_irq == NO_IRQ) { + if (!cuda_irq) { printk(KERN_ERR "via-cuda: can't map interrupts for %s\n", vias->full_name); return -ENODEV; diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c index f8b6d1403c16..91081dcdc272 100644 --- a/drivers/macintosh/via-pmu.c +++ b/drivers/macintosh/via-pmu.c @@ -145,7 +145,7 @@ static int pmu_fully_inited; static int pmu_has_adb; static struct device_node *gpio_node; static unsigned char __iomem *gpio_reg; -static int gpio_irq = NO_IRQ; +static int gpio_irq = 0; static int gpio_irq_enabled = -1; static volatile int pmu_suspended; static spinlock_t pmu_lock; @@ -402,7 +402,7 @@ static int __init via_pmu_start(void) batt_req.complete = 1; irq = irq_of_parse_and_map(vias, 0); - if (irq == NO_IRQ) { + if (!irq) { printk(KERN_ERR "via-pmu: can't map interrupt\n"); return -ENODEV; } @@ -424,7 +424,7 @@ static int __init via_pmu_start(void) if (gpio_node) gpio_irq = irq_of_parse_and_map(gpio_node, 0); - if (gpio_irq != NO_IRQ) { + if (gpio_irq) { if (request_irq(gpio_irq, gpio1_interrupt, IRQF_NO_SUSPEND, "GPIO1 ADB", (void *)0)) diff --git a/drivers/ps3/ps3-vuart.c b/drivers/ps3/ps3-vuart.c index 632701a1d993..b7f300b79ffd 100644 --- a/drivers/ps3/ps3-vuart.c +++ b/drivers/ps3/ps3-vuart.c @@ -958,7 +958,7 @@ static int ps3_vuart_bus_interrupt_get(void) fail_request_irq: ps3_vuart_irq_destroy(vuart_bus_priv.virq); - vuart_bus_priv.virq = NO_IRQ; + vuart_bus_priv.virq = 0; fail_alloc_irq: kfree(vuart_bus_priv.bmp); vuart_bus_priv.bmp = NULL; @@ -982,7 +982,7 @@ static int ps3_vuart_bus_interrupt_put(void) free_irq(vuart_bus_priv.virq, &vuart_bus_priv); ps3_vuart_irq_destroy(vuart_bus_priv.virq); - vuart_bus_priv.virq = NO_IRQ; + vuart_bus_priv.virq = 0; kfree(vuart_bus_priv.bmp); vuart_bus_priv.bmp = NULL; -- cgit v1.2.3