Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86 ACPI: fix resume from suspend to RAM on uniprocessor x86-64
x86 ACPI: normalize segment descriptor register on resume
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 061817a..5e6468a 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1777,7 +1777,7 @@
struct ahci_host_priv *hpriv;
unsigned int i, handled = 0;
void __iomem *mmio;
- u32 irq_stat;
+ u32 irq_stat, irq_masked;
VPRINTK("ENTER\n");
@@ -1786,16 +1786,17 @@
/* sigh. 0xffffffff is a valid return from h/w */
irq_stat = readl(mmio + HOST_IRQ_STAT);
- irq_stat &= hpriv->port_map;
if (!irq_stat)
return IRQ_NONE;
+ irq_masked = irq_stat & hpriv->port_map;
+
spin_lock(&host->lock);
for (i = 0; i < host->n_ports; i++) {
struct ata_port *ap;
- if (!(irq_stat & (1 << i)))
+ if (!(irq_masked & (1 << i)))
continue;
ap = host->ports[i];
@@ -1812,6 +1813,15 @@
handled = 1;
}
+ /* HOST_IRQ_STAT behaves as level triggered latch meaning that
+ * it should be cleared after all the port events are cleared;
+ * otherwise, it will raise a spurious interrupt after each
+ * valid one. Please read section 10.6.2 of ahci 1.1 for more
+ * information.
+ *
+ * Also, use the unmasked value to clear interrupt as spurious
+ * pending event on a dummy port might cause screaming IRQ.
+ */
writel(irq_stat, mmio + HOST_IRQ_STAT);
spin_unlock(&host->lock);
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 380fa0c..d27061b 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -646,8 +646,6 @@
goto out;
}
- get_device(&hwif->gendev);
-
hwif->portdev = device_create_drvdata(ide_port_class, &hwif->gendev,
MKDEV(0, 0), hwif, hwif->name);
if (IS_ERR(hwif->portdev)) {
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index c758dcb..300431d 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -315,13 +315,14 @@
BUG_ON(in_interrupt());
BUG_ON(irqs_disabled());
- mutex_lock(&ide_cfg_mtx);
- spin_lock_irq(&ide_lock);
- if (!hwif->present)
- goto abort;
- __ide_port_unregister_devices(hwif);
- hwif->present = 0;
+ mutex_lock(&ide_cfg_mtx);
+
+ spin_lock_irq(&ide_lock);
+ if (hwif->present) {
+ __ide_port_unregister_devices(hwif);
+ hwif->present = 0;
+ }
spin_unlock_irq(&ide_lock);
ide_proc_unregister_port(hwif);
@@ -351,16 +352,15 @@
blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS);
kfree(hwif->sg_table);
unregister_blkdev(hwif->major, hwif->name);
- spin_lock_irq(&ide_lock);
if (hwif->dma_base)
ide_release_dma_engine(hwif);
+ spin_lock_irq(&ide_lock);
/* restore hwif data to pristine status */
ide_init_port_data(hwif, hwif->index);
-
-abort:
spin_unlock_irq(&ide_lock);
+
mutex_unlock(&ide_cfg_mtx);
}
@@ -1094,13 +1094,6 @@
EXPORT_SYMBOL_GPL(ide_bus_type);
-static void ide_port_class_release(struct device *portdev)
-{
- ide_hwif_t *hwif = dev_get_drvdata(portdev);
-
- put_device(&hwif->gendev);
-}
-
int ide_vlb_clk;
EXPORT_SYMBOL_GPL(ide_vlb_clk);
@@ -1305,7 +1298,6 @@
ret = PTR_ERR(ide_port_class);
goto out_port_class;
}
- ide_port_class->dev_release = ide_port_class_release;
init_ide_data();
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index ab8ccc9..05053d70 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -476,10 +476,10 @@
return -ESRCH;
mm = get_task_mm(task);
if (mm) {
- static struct mm_walk clear_refs_walk;
- memset(&clear_refs_walk, 0, sizeof(clear_refs_walk));
- clear_refs_walk.pmd_entry = clear_refs_pte_range;
- clear_refs_walk.mm = mm;
+ struct mm_walk clear_refs_walk = {
+ .pmd_entry = clear_refs_pte_range,
+ .mm = mm,
+ };
down_read(&mm->mmap_sem);
for (vma = mm->mmap; vma; vma = vma->vm_next) {
clear_refs_walk.private = vma;
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index a37a503..c94e58b 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -729,7 +729,11 @@
} else {
*policy = pol == &default_policy ? MPOL_DEFAULT :
pol->mode;
- *policy |= pol->flags;
+ /*
+ * Internal mempolicy flags must be masked off before exposing
+ * the policy to userspace.
+ */
+ *policy |= (pol->flags & MPOL_MODE_FLAGS);
}
if (vma) {