From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Date: Tue, 17 Jul 2012 16:33:30 +0000 (+0100)
Subject: xen/arm: gic and vgic fixes
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~8190
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=56239ba4f3130317b311eebce3ec46d903e0fba5;p=xen.git

xen/arm: gic and vgic fixes

- the last argument of find_next_bit is the maximum number of bits, not
the maximum number of bytes;

- use list_for_each_entry_safe instead of list_for_each_entry in
gic_restore_pending_irqs because we are actually deleting entries in the
loop.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Tim Deegan <tim@xen.org>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
---

diff --git a/xen/arch/arm/gic.c b/xen/arch/arm/gic.c
index c8d7caa436..3a995d43c5 100644
--- a/xen/arch/arm/gic.c
+++ b/xen/arch/arm/gic.c
@@ -477,9 +477,9 @@ out:
 static void gic_restore_pending_irqs(struct vcpu *v)
 {
     int i;
-    struct pending_irq *p;
+    struct pending_irq *p, *t;
 
-    list_for_each_entry ( p, &v->arch.vgic.lr_pending, lr_queue )
+    list_for_each_entry_safe ( p, t, &v->arch.vgic.lr_pending, lr_queue )
     {
         i = find_first_zero_bit(&gic.lr_mask, nr_lrs);
         if ( i >= nr_lrs ) return;
@@ -583,7 +583,7 @@ static void events_maintenance(struct vcpu *v)
     if (!already_pending && gic.event_mask != 0) {
         spin_lock_irq(&gic.lock);
         while ((i = find_next_bit((const long unsigned int *) &gic.event_mask,
-                        sizeof(uint64_t), i)) < sizeof(uint64_t)) {
+                        64, i)) < 64) {
 
             GICH[GICH_LR + i] = 0;
             clear_bit(i, &gic.lr_mask);
@@ -605,7 +605,7 @@ static void maintenance_interrupt(int irq, void *dev_id, struct cpu_user_regs *r
     events_maintenance(v);
 
     while ((i = find_next_bit((const long unsigned int *) &eisr,
-                              sizeof(eisr), i)) < sizeof(eisr)) {
+                              64, i)) < 64) {
         struct pending_irq *p;
 
         spin_lock_irq(&gic.lock);
diff --git a/xen/arch/arm/vgic.c b/xen/arch/arm/vgic.c
index 005f4788f9..5b5fca7440 100644
--- a/xen/arch/arm/vgic.c
+++ b/xen/arch/arm/vgic.c
@@ -355,8 +355,7 @@ static void vgic_enable_irqs(struct vcpu *v, uint32_t r, int n)
     unsigned int irq;
     int i = 0;
 
-    while ( (i = find_next_bit((const long unsigned int *) &r,
-                        sizeof(uint32_t), i)) < sizeof(uint32_t) ) {
+    while ( (i = find_next_bit((const long unsigned int *) &r, 32, i)) < 32 ) {
         irq = i + (32 * n);
         p = irq_to_pending(v, irq);
         if ( !list_empty(&p->inflight) )