Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / drivers / parisc / iosapic.c

diff --git a/drivers/parisc/iosapic.c b/drivers/parisc/iosapic.c
index 91df0bf..7a458d5 100644 (file)
--- a/drivers/parisc/iosapic.c
+++ b/drivers/parisc/iosapic.c
@@ -215,7 +215,7 @@ static inline void iosapic_write(void __iomem *iosapic, unsigned int reg, u32 va
 #define IOSAPIC_IRDT_ID_EID_SHIFT              0x10
 
 
-static spinlock_t iosapic_lock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(iosapic_lock);
 
 static inline void iosapic_eoi(void __iomem *addr, unsigned int data)
 {
@@ -244,7 +244,7 @@ static struct irt_entry *iosapic_alloc_irt(int num_entries)
         * 4-byte alignment on 32-bit kernels
         */
        a = (unsigned long)kmalloc(sizeof(struct irt_entry) * num_entries + 8, GFP_KERNEL);
-       a = (a + 7) & ~7;
+       a = (a + 7UL) & ~7UL;
        return (struct irt_entry *)a;
 }
 
@@ -700,6 +700,28 @@ static unsigned int iosapic_startup_irq(unsigned int irq)
        return 0;
 }
 
+#ifdef CONFIG_SMP
+static void iosapic_set_affinity_irq(unsigned int irq, cpumask_t dest)
+{
+       struct vector_info *vi = iosapic_get_vector(irq);
+       u32 d0, d1, dummy_d0;
+       unsigned long flags;
+
+       if (cpu_check_affinity(irq, &dest))
+               return;
+
+       vi->txn_addr = txn_affinity_addr(irq, first_cpu(dest));
+
+       spin_lock_irqsave(&iosapic_lock, flags);
+       /* d1 contains the destination CPU, so only want to set that
+        * entry */
+       iosapic_rd_irt_entry(vi, &d0, &d1);
+       iosapic_set_irt_data(vi, &dummy_d0, &d1);
+       iosapic_wr_irt_entry(vi, d0, d1);
+       spin_unlock_irqrestore(&iosapic_lock, flags);
+}
+#endif
+
 static struct hw_interrupt_type iosapic_interrupt_type = {
        .typename =     "IO-SAPIC-level",
        .startup =      iosapic_startup_irq,
@@ -708,7 +730,9 @@ static struct hw_interrupt_type iosapic_interrupt_type = {
        .disable =      iosapic_disable_irq,
        .ack =          no_ack_irq,
        .end =          iosapic_end_irq,
-//     .set_affinity = iosapic_set_affinity_irq,
+#ifdef CONFIG_SMP
+       .set_affinity = iosapic_set_affinity_irq,
+#endif
 };
 
 int iosapic_fixup_irq(void *isi_obj, struct pci_dev *pcidev)
@@ -849,28 +873,24 @@ void *iosapic_register(unsigned long hpa)
                return NULL;
        }
 
-       isi = (struct iosapic_info *)kmalloc(sizeof(struct iosapic_info), GFP_KERNEL);
+       isi = (struct iosapic_info *)kzalloc(sizeof(struct iosapic_info), GFP_KERNEL);
        if (!isi) {
                BUG();
                return NULL;
        }
 
-       memset(isi, 0, sizeof(struct iosapic_info));
-
-       isi->addr = ioremap(hpa, 4096);
+       isi->addr = ioremap_nocache(hpa, 4096);
        isi->isi_hpa = hpa;
        isi->isi_version = iosapic_rd_version(isi);
        isi->isi_num_vectors = IOSAPIC_IRDT_MAX_ENTRY(isi->isi_version) + 1;
 
        vip = isi->isi_vector = (struct vector_info *)
-               kmalloc(sizeof(struct vector_info) * isi->isi_num_vectors, GFP_KERNEL);
+               kzalloc(sizeof(struct vector_info) * isi->isi_num_vectors, GFP_KERNEL);
        if (vip == NULL) {
                kfree(isi);
                return NULL;
        }
 
-       memset(vip, 0, sizeof(struct vector_info) * isi->isi_num_vectors);
-
        for (cnt=0; cnt < isi->isi_num_vectors; cnt++, vip++) {
                vip->irqline = (unsigned char) cnt;
                vip->iosapic = isi;