From: David S. Miller <davem@sunset.davemloft.net>
Date: Sun, 14 Oct 2007 06:50:38 +0000 (-0700)
Subject: [SPARC64]: virt_irq --> bucket mapping no longer necessary
X-Git-Tag: v3.12-rc1~26339^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=256c1df36bbec6530c6f9b5a840cc5e87315c19e;p=kernel%2Fkernel-generic.git

[SPARC64]: virt_irq --> bucket mapping no longer necessary

We used to need this to compute virt_irq --> ino, but that
is no longer necessary.

Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c
index 2be6bcb..695b9e4 100644
--- a/arch/sparc64/kernel/irq.c
+++ b/arch/sparc64/kernel/irq.c
@@ -122,19 +122,16 @@ static void bucket_set_virt_irq(unsigned long bucket_pa,
 			       "i" (ASI_PHYS_USE_EC));
 }
 
-#define __irq(bucket) ((unsigned long)(bucket))
-
 #define irq_work_pa(__cpu)	&(trap_block[(__cpu)].irq_worklist_pa)
 
 static struct {
-	unsigned long irq;
 	unsigned int dev_handle;
 	unsigned int dev_ino;
+	unsigned int in_use;
 } virt_to_real_irq_table[NR_IRQS];
 static DEFINE_SPINLOCK(virt_irq_alloc_lock);
 
-unsigned char virt_irq_alloc(unsigned long real_irq,
-			     unsigned int dev_handle,
+unsigned char virt_irq_alloc(unsigned int dev_handle,
 			     unsigned int dev_ino)
 {
 	unsigned long flags;
@@ -145,16 +142,16 @@ unsigned char virt_irq_alloc(unsigned long real_irq,
 	spin_lock_irqsave(&virt_irq_alloc_lock, flags);
 
 	for (ent = 1; ent < NR_IRQS; ent++) {
-		if (!virt_to_real_irq_table[ent].irq)
+		if (!virt_to_real_irq_table[ent].in_use)
 			break;
 	}
 	if (ent >= NR_IRQS) {
 		printk(KERN_ERR "IRQ: Out of virtual IRQs.\n");
 		ent = 0;
 	} else {
-		virt_to_real_irq_table[ent].irq = real_irq;
 		virt_to_real_irq_table[ent].dev_handle = dev_handle;
 		virt_to_real_irq_table[ent].dev_ino = dev_ino;
+		virt_to_real_irq_table[ent].in_use = 1;
 	}
 
 	spin_unlock_irqrestore(&virt_irq_alloc_lock, flags);
@@ -172,7 +169,7 @@ void virt_irq_free(unsigned int virt_irq)
 
 	spin_lock_irqsave(&virt_irq_alloc_lock, flags);
 
-	virt_to_real_irq_table[virt_irq].irq = 0;
+	virt_to_real_irq_table[virt_irq].in_use = 0;
 
 	spin_unlock_irqrestore(&virt_irq_alloc_lock, flags);
 }
@@ -583,7 +580,7 @@ unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap)
 	bucket = &ivector_table[ino];
 	virt_irq = bucket_get_virt_irq(__pa(bucket));
 	if (!virt_irq) {
-		virt_irq = virt_irq_alloc(__irq(bucket), 0, ino);
+		virt_irq = virt_irq_alloc(0, ino);
 		bucket_set_virt_irq(__pa(bucket), virt_irq);
 		set_irq_chip(virt_irq, &sun4u_irq);
 	}
@@ -618,7 +615,7 @@ static unsigned int sun4v_build_common(unsigned long sysino,
 	bucket = &ivector_table[sysino];
 	virt_irq = bucket_get_virt_irq(__pa(bucket));
 	if (!virt_irq) {
-		virt_irq = virt_irq_alloc(__irq(bucket), 0, sysino);
+		virt_irq = virt_irq_alloc(0, sysino);
 		bucket_set_virt_irq(__pa(bucket), virt_irq);
 		set_irq_chip(virt_irq, chip);
 	}
@@ -666,7 +663,7 @@ unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino)
 			     ((unsigned long) bucket +
 			      sizeof(struct ino_bucket)));
 
-	virt_irq = virt_irq_alloc(__irq(bucket), devhandle, devino);
+	virt_irq = virt_irq_alloc(devhandle, devino);
 	bucket_set_virt_irq(__pa(bucket), virt_irq);
 	set_irq_chip(virt_irq, &sun4v_virq);
 
diff --git a/arch/sparc64/kernel/pci_msi.c b/arch/sparc64/kernel/pci_msi.c
index e4920cf..31a165f 100644
--- a/arch/sparc64/kernel/pci_msi.c
+++ b/arch/sparc64/kernel/pci_msi.c
@@ -123,7 +123,7 @@ int sparc64_setup_msi_irq(unsigned int *virt_irq_p,
 	int msi, err;
 	u32 msiqid;
 
-	*virt_irq_p = virt_irq_alloc(~0, 0, 0);
+	*virt_irq_p = virt_irq_alloc(0, 0);
 	err = -ENOMEM;
 	if (!*virt_irq_p)
 		goto out_err;
diff --git a/include/asm-sparc64/irq.h b/include/asm-sparc64/irq.h
index fd34d73..182dba0 100644
--- a/include/asm-sparc64/irq.h
+++ b/include/asm-sparc64/irq.h
@@ -59,8 +59,7 @@ extern unsigned int sun4u_build_msi(u32 portid, unsigned int *virt_irq_p,
 extern void sun4u_destroy_msi(unsigned int virt_irq);
 extern unsigned int sbus_build_irq(void *sbus, unsigned int ino);
 
-extern unsigned char virt_irq_alloc(unsigned long real_irq,
-				    unsigned int dev_handle,
+extern unsigned char virt_irq_alloc(unsigned int dev_handle,
 				    unsigned int dev_ino);
 #ifdef CONFIG_PCI_MSI
 extern void virt_irq_free(unsigned int virt_irq);