Merge branch 'linus' into stackprotector

Conflicts:
	arch/x86/include/asm/pda.h
	kernel/fork.c

1 files changed, 61 insertions, 17 deletions

diff --git a/include/linux/libata.h b/include/linux/libata.h
index 947cf84e555..3449de597ef 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -213,10 +213,11 @@ enum {
         ATA_PFLAG_FROZEN        = (1 << 2), /* port is frozen */
         ATA_PFLAG_RECOVERED     = (1 << 3), /* recovery action performed */
         ATA_PFLAG_LOADING       = (1 << 4), /* boot/loading probe */
-        ATA_PFLAG_UNLOADING     = (1 << 5), /* module is unloading */
         ATA_PFLAG_SCSI_HOTPLUG  = (1 << 6), /* SCSI hotplug scheduled */
         ATA_PFLAG_INITIALIZING  = (1 << 7), /* being initialized, don't touch */
         ATA_PFLAG_RESETTING     = (1 << 8), /* reset in progress */
+        ATA_PFLAG_UNLOADING     = (1 << 9), /* driver is being unloaded */
+        ATA_PFLAG_UNLOADED      = (1 << 10), /* driver is unloaded */
 
         ATA_PFLAG_SUSPENDED     = (1 << 17), /* port is suspended (power) */
         ATA_PFLAG_PM_PENDING    = (1 << 18), /* PM operation pending */
@@ -340,6 +341,9 @@ enum {
 
         ATA_EHI_DID_RESET       = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
 
+        /* mask of flags to transfer *to* the slave link */
+        ATA_EHI_TO_SLAVE_MASK   = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
+
         /* max tries if error condition is still set after ->error_handler */
         ATA_EH_MAX_TRIES        = 5,
 
@@ -369,6 +373,10 @@ enum {
         ATA_HORKAGE_IPM         = (1 << 7),     /* Link PM problems */
         ATA_HORKAGE_IVB         = (1 << 8),     /* cbl det validity bit bugs */
         ATA_HORKAGE_STUCK_ERR   = (1 << 9),     /* stuck ERR on next PACKET */
+        ATA_HORKAGE_BRIDGE_OK   = (1 << 10),    /* no bridge limits */
+        ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands
+                                                    not multiple of 16 bytes */
+        ATA_HORKAGE_FIRMWARE_WARN = (1 << 12),  /* firwmare update warning */
 
          /* DMA mask for user DMA control: User visible values; DO NOT
             renumber */
@@ -1278,26 +1286,62 @@ static inline int ata_link_active(struct ata_link *link)
         return ata_tag_valid(link->active_tag) || link->sactive;
 }
 
-extern struct ata_link *__ata_port_next_link(struct ata_port *ap,
-                                             struct ata_link *link,
-                                             bool dev_only);
+/*
+ * Iterators
+ *
+ * ATA_LITER_* constants are used to select link iteration mode and
+ * ATA_DITER_* device iteration mode.
+ *
+ * For a custom iteration directly using ata_{link|dev}_next(), if
+ * @link or @dev, respectively, is NULL, the first element is
+ * returned.  @dev and @link can be any valid device or link and the
+ * next element according to the iteration mode will be returned.
+ * After the last element, NULL is returned.
+ */
+enum ata_link_iter_mode {
+        ATA_LITER_EDGE,         /* if present, PMP links only; otherwise,
+                                 * host link.  no slave link */
+        ATA_LITER_HOST_FIRST,   /* host link followed by PMP or slave links */
+        ATA_LITER_PMP_FIRST,    /* PMP links followed by host link,
+                                 * slave link still comes after host link */
+};
+
+enum ata_dev_iter_mode {
+        ATA_DITER_ENABLED,
+        ATA_DITER_ENABLED_REVERSE,
+        ATA_DITER_ALL,
+        ATA_DITER_ALL_REVERSE,
+};
 
-#define __ata_port_for_each_link(link, ap) \
-        for ((link) = __ata_port_next_link((ap), NULL, false); (link); \
-             (link) = __ata_port_next_link((ap), (link), false))
+extern struct ata_link *ata_link_next(struct ata_link *link,
+                                      struct ata_port *ap,
+                                      enum ata_link_iter_mode mode);
 
-#define ata_port_for_each_link(link, ap) \
-        for ((link) = __ata_port_next_link((ap), NULL, true); (link); \
-             (link) = __ata_port_next_link((ap), (link), true))
+extern struct ata_device *ata_dev_next(struct ata_device *dev,
+                                       struct ata_link *link,
+                                       enum ata_dev_iter_mode mode);
 
-#define ata_link_for_each_dev(dev, link) \
-        for ((dev) = (link)->device; \
-             (dev) < (link)->device + ata_link_max_devices(link) || ((dev) = NULL); \
-             (dev)++)
+/*
+ * Shortcut notation for iterations
+ *
+ * ata_for_each_link() iterates over each link of @ap according to
+ * @mode.  @link points to the current link in the loop.  @link is
+ * NULL after loop termination.  ata_for_each_dev() works the same way
+ * except that it iterates over each device of @link.
+ *
+ * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
+ * specified when using the following shorthand notations.  Only the
+ * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
+ * specified.  This not only increases brevity but also makes it
+ * impossible to use ATA_LITER_* for device iteration or vice-versa.
+ */
+#define ata_for_each_link(link, ap, mode) \
+        for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
+             (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
 
-#define ata_link_for_each_dev_reverse(dev, link) \
-        for ((dev) = (link)->device + ata_link_max_devices(link) - 1; \
-             (dev) >= (link)->device || ((dev) = NULL); (dev)--)
+#define ata_for_each_dev(dev, link, mode) \
+        for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
+             (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
 
 /**
  *      ata_ncq_enabled - Test whether NCQ is enabled