powerpc/irq: Remove IRQF_DISABLED

Since commit [e58aa3d2: genirq: Run irq handlers with interrupts disabled],
We run all interrupt handlers with interrupts disabled
and we even check and yell when an interrupt handler
returns with interrupts enabled (see commit [b738a50a:
genirq: Warn when handler enables interrupts]).

So now this flag is a NOOP and can be removed.

Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

14 files changed, 18 insertions, 26 deletions

diff --git a/arch/powerpc/include/asm/floppy.h b/arch/powerpc/include/asm/floppy.h
index 24bd34c57e9d..936a904ae78c 100644
--- a/arch/powerpc/include/asm/floppy.h
+++ b/arch/powerpc/include/asm/floppy.h
@@ -108,10 +108,10 @@ static int fd_request_irq(void)
 {
         if (can_use_virtual_dma)
                 return request_irq(FLOPPY_IRQ, floppy_hardint,
-                                   IRQF_DISABLED, "floppy", NULL);
+                                   0, "floppy", NULL);
         else
                 return request_irq(FLOPPY_IRQ, floppy_interrupt,
-                                   IRQF_DISABLED, "floppy", NULL);
+                                   0, "floppy", NULL);
 }
 
 static int vdma_dma_setup(char *addr, unsigned long size, int mode, int io)
diff --git a/arch/powerpc/include/asm/xics.h b/arch/powerpc/include/asm/xics.h
index bd6c401c0ee5..c48de98ba94e 100644
--- a/arch/powerpc/include/asm/xics.h
+++ b/arch/powerpc/include/asm/xics.h
@@ -15,8 +15,8 @@
 #define DEFAULT_PRIORITY        5
 
 /*
- * Mark IPIs as higher priority so we can take them inside interrupts that
- * arent marked IRQF_DISABLED
+ * Mark IPIs as higher priority so we can take them inside interrupts
+ * FIXME: still true now?
  */
 #define IPI_PRIORITY            4
 
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 25ddbfc7dd36..6df70907d60a 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -187,7 +187,7 @@ int smp_request_message_ipi(int virq, int msg)
                 return 1;
         }
 #endif
-        err = request_irq(virq, smp_ipi_action[msg], IRQF_DISABLED|IRQF_PERCPU,
+        err = request_irq(virq, smp_ipi_action[msg], IRQF_PERCPU,
                           smp_ipi_name[msg], 0);
         WARN(err < 0, "unable to request_irq %d for %s (rc %d)\n",
                 virq, smp_ipi_name[msg], err);
diff --git a/arch/powerpc/platforms/cell/beat.c b/arch/powerpc/platforms/cell/beat.c
index 232fc384e855..852592b2b712 100644
--- a/arch/powerpc/platforms/cell/beat.c
+++ b/arch/powerpc/platforms/cell/beat.c
@@ -230,7 +230,7 @@ static int __init beat_register_event(void)
                 }
                 ev->virq = virq;
 
-                rc = request_irq(virq, ev->handler, IRQF_DISABLED,
+                rc = request_irq(virq, ev->handler, 0,
                                       ev->typecode, NULL);
                 if (rc != 0) {
                         printk(KERN_ERR "Beat: failed to request virtual IRQ"
diff --git a/arch/powerpc/platforms/cell/celleb_scc_pciex.c b/arch/powerpc/platforms/cell/celleb_scc_pciex.c
index ae790ac4a589..14be2bd358b8 100644
--- a/arch/powerpc/platforms/cell/celleb_scc_pciex.c
+++ b/arch/powerpc/platforms/cell/celleb_scc_pciex.c
@@ -514,7 +514,7 @@ static __init int celleb_setup_pciex(struct device_node *node,
         virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
                                      oirq.size);
         if (request_irq(virq, pciex_handle_internal_irq,
-                        IRQF_DISABLED, "pciex", (void *)phb)) {
+                        0, "pciex", (void *)phb)) {
                 pr_err("PCIEXC:Failed to request irq\n");
                 goto error;
         }
diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c
index fc46fcac3921..592c3d51b817 100644
--- a/arch/powerpc/platforms/cell/iommu.c
+++ b/arch/powerpc/platforms/cell/iommu.c
@@ -412,8 +412,7 @@ static void cell_iommu_enable_hardware(struct cbe_iommu *iommu)
                         IIC_IRQ_IOEX_ATI | (iommu->nid << IIC_IRQ_NODE_SHIFT));
         BUG_ON(virq == NO_IRQ);
 
-        ret = request_irq(virq, ioc_interrupt, IRQF_DISABLED,
-                        iommu->name, iommu);
+        ret = request_irq(virq, ioc_interrupt, 0, iommu->name, iommu);
         BUG_ON(ret);
 
         /* set the IOC segment table origin register (and turn on the iommu) */
diff --git a/arch/powerpc/platforms/cell/pmu.c b/arch/powerpc/platforms/cell/pmu.c
index 1acf36010423..59c1a1694104 100644
--- a/arch/powerpc/platforms/cell/pmu.c
+++ b/arch/powerpc/platforms/cell/pmu.c
@@ -392,7 +392,7 @@ static int __init cbe_init_pm_irq(void)
                 }
 
                 rc = request_irq(irq, cbe_pm_irq,
-                                 IRQF_DISABLED, "cbe-pmu-0", NULL);
+                                 0, "cbe-pmu-0", NULL);
                 if (rc) {
                         printk("ERROR: Request for irq on node %d failed\n",
                                node);
diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
index 3675da73623f..e94d3ecdd8bb 100644
--- a/arch/powerpc/platforms/cell/spu_base.c
+++ b/arch/powerpc/platforms/cell/spu_base.c
@@ -442,8 +442,7 @@ static int spu_request_irqs(struct spu *spu)
                 snprintf(spu->irq_c0, sizeof (spu->irq_c0), "spe%02d.0",
                          spu->number);
                 ret = request_irq(spu->irqs[0], spu_irq_class_0,
-                                  IRQF_DISABLED,
-                                  spu->irq_c0, spu);
+                                  0, spu->irq_c0, spu);
                 if (ret)
                         goto bail0;
         }
@@ -451,8 +450,7 @@ static int spu_request_irqs(struct spu *spu)
                 snprintf(spu->irq_c1, sizeof (spu->irq_c1), "spe%02d.1",
                          spu->number);
                 ret = request_irq(spu->irqs[1], spu_irq_class_1,
-                                  IRQF_DISABLED,
-                                  spu->irq_c1, spu);
+                                  0, spu->irq_c1, spu);
                 if (ret)
                         goto bail1;
         }
@@ -460,8 +458,7 @@ static int spu_request_irqs(struct spu *spu)
                 snprintf(spu->irq_c2, sizeof (spu->irq_c2), "spe%02d.2",
                          spu->number);
                 ret = request_irq(spu->irqs[2], spu_irq_class_2,
-                                  IRQF_DISABLED,
-                                  spu->irq_c2, spu);
+                                  0, spu->irq_c2, spu);
                 if (ret)
                         goto bail2;
         }
diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c
index cb40e921a565..901bfbddc3dd 100644
--- a/arch/powerpc/platforms/powermac/pic.c
+++ b/arch/powerpc/platforms/powermac/pic.c
@@ -272,7 +272,6 @@ static struct irqaction xmon_action = {
 
 static struct irqaction gatwick_cascade_action = {
         .handler        = gatwick_action,
-        .flags          = IRQF_DISABLED,
         .name           = "cascade",
 };
 
diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c
index 9a521dc8e485..9b6a820bdd7d 100644
--- a/arch/powerpc/platforms/powermac/smp.c
+++ b/arch/powerpc/platforms/powermac/smp.c
@@ -200,7 +200,7 @@ static int psurge_secondary_ipi_init(void)
 
         if (psurge_secondary_virq)
                 rc = request_irq(psurge_secondary_virq, psurge_ipi_intr,
-                        IRQF_DISABLED|IRQF_PERCPU, "IPI", NULL);
+                        IRQF_PERCPU, "IPI", NULL);
 
         if (rc)
                 pr_err("Failed to setup secondary cpu IPI\n");
@@ -408,7 +408,7 @@ static int __init smp_psurge_kick_cpu(int nr)
 
 static struct irqaction psurge_irqaction = {
         .handler = psurge_ipi_intr,
-        .flags = IRQF_DISABLED|IRQF_PERCPU,
+        .flags = IRQF_PERCPU,
         .name = "primary IPI",
 };
 
diff --git a/arch/powerpc/platforms/ps3/device-init.c b/arch/powerpc/platforms/ps3/device-init.c
index 6c4b5837fc8a..3f175e8aedb4 100644
--- a/arch/powerpc/platforms/ps3/device-init.c
+++ b/arch/powerpc/platforms/ps3/device-init.c
@@ -825,7 +825,7 @@ static int ps3_probe_thread(void *data)
 
         spin_lock_init(&dev.lock);
 
-        res = request_irq(irq, ps3_notification_interrupt, IRQF_DISABLED,
+        res = request_irq(irq, ps3_notification_interrupt, 0,
                           "ps3_notification", &dev);
         if (res) {
                 pr_err("%s:%u: request_irq failed %d\n", __func__, __LINE__,
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index 0842c6f8a3e6..8c7e8528e7c4 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -800,8 +800,6 @@ static void mpic_end_ipi(struct irq_data *d)
          * IPIs are marked IRQ_PER_CPU. This has the side effect of
          * preventing the IRQ_PENDING/IRQ_INPROGRESS logic from
          * applying to them. We EOI them late to avoid re-entering.
-         * We mark IPI's with IRQF_DISABLED as they must run with
-         * irqs disabled.
          */
         mpic_eoi(mpic);
 }
diff --git a/arch/powerpc/sysdev/ppc4xx_soc.c b/arch/powerpc/sysdev/ppc4xx_soc.c
index d3d6ce3c33b4..0debcc31ad70 100644
--- a/arch/powerpc/sysdev/ppc4xx_soc.c
+++ b/arch/powerpc/sysdev/ppc4xx_soc.c
@@ -115,7 +115,7 @@ static int __init ppc4xx_l2c_probe(void)
         }
 
         /* Install error handler */
-        if (request_irq(irq, l2c_error_handler, IRQF_DISABLED, "L2C", 0) < 0) {
+        if (request_irq(irq, l2c_error_handler, 0, "L2C", 0) < 0) {
                 printk(KERN_ERR "Cannot install L2C error handler"
                        ", cache is not enabled\n");
                 of_node_put(np);
diff --git a/arch/powerpc/sysdev/xics/xics-common.c b/arch/powerpc/sysdev/xics/xics-common.c
index 3d93a8ded0f8..63762c672a03 100644
--- a/arch/powerpc/sysdev/xics/xics-common.c
+++ b/arch/powerpc/sysdev/xics/xics-common.c
@@ -134,11 +134,10 @@ static void xics_request_ipi(void)
         BUG_ON(ipi == NO_IRQ);
 
         /*
-         * IPIs are marked IRQF_DISABLED as they must run with irqs
-         * disabled, and PERCPU.  The handler was set in map.
+         * IPIs are marked IRQF_PERCPU. The handler was set in map.
          */
         BUG_ON(request_irq(ipi, icp_ops->ipi_action,
-                           IRQF_DISABLED|IRQF_PERCPU, "IPI", NULL));
+                           IRQF_PERCPU, "IPI", NULL));
 }
 
 int __init xics_smp_probe(void)