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authorMichael Ellerman <mpe@ellerman.id.au>2016-09-06 21:53:24 +1000
committerMichael Ellerman <mpe@ellerman.id.au>2016-09-20 20:57:12 +1000
commitef24ba7091517d2bbf9ba2cb4256c0dccd51d248 (patch)
treef988a2b82eab1ec83aa2a08e34190a9a32b4035f /drivers/macintosh
parent9d82fd2fae925efdf546cc25afdc664a2e3a2d9f (diff)
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 <mpe@ellerman.id.au>
Diffstat (limited to 'drivers/macintosh')
-rw-r--r--drivers/macintosh/macio_asic.c4
-rw-r--r--drivers/macintosh/rack-meter.c2
-rw-r--r--drivers/macintosh/smu.c18
-rw-r--r--drivers/macintosh/via-cuda.c2
-rw-r--r--drivers/macintosh/via-pmu.c6
5 files changed, 16 insertions, 16 deletions
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))