Merge 3.18-rc3 into staging-next

We want the upstream fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

7 files changed, 168 insertions, 8 deletions

diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild
index 5f17fa7bc153..d0df45685a4c 100644
--- a/include/uapi/linux/Kbuild
+++ b/include/uapi/linux/Kbuild
@@ -375,6 +375,7 @@ header-y += swab.h
 header-y += synclink.h
 header-y += sysctl.h
 header-y += sysinfo.h
+header-y += target_core_user.h
 header-y += taskstats.h
 header-y += tcp.h
 header-y += tcp_metrics.h
diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
index ca1a11bb4443..3735fa0a6784 100644
--- a/include/uapi/linux/fs.h
+++ b/include/uapi/linux/fs.h
@@ -37,6 +37,7 @@
 
 #define RENAME_NOREPLACE        (1 << 0)        /* Don't overwrite target */
 #define RENAME_EXCHANGE         (1 << 1)        /* Exchange source and dest */
+#define RENAME_WHITEOUT         (1 << 2)        /* Whiteout source */
 
 struct fstrim_range {
         __u64 start;
diff --git a/include/uapi/linux/input.h b/include/uapi/linux/input.h
index 1874ebe9ac1e..a1d7e931ab72 100644
--- a/include/uapi/linux/input.h
+++ b/include/uapi/linux/input.h
@@ -739,6 +739,13 @@ struct input_keymap_entry {
 #define KEY_BRIGHTNESS_MIN              0x250   /* Set Brightness to Minimum */
 #define KEY_BRIGHTNESS_MAX              0x251   /* Set Brightness to Maximum */
 
+#define KEY_KBDINPUTASSIST_PREV         0x260
+#define KEY_KBDINPUTASSIST_NEXT         0x261
+#define KEY_KBDINPUTASSIST_PREVGROUP            0x262
+#define KEY_KBDINPUTASSIST_NEXTGROUP            0x263
+#define KEY_KBDINPUTASSIST_ACCEPT               0x264
+#define KEY_KBDINPUTASSIST_CANCEL               0x265
+
 #define BTN_TRIGGER_HAPPY               0x2c0
 #define BTN_TRIGGER_HAPPY1              0x2c0
 #define BTN_TRIGGER_HAPPY2              0x2c1
diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index 9269de254874..9d845404d875 100644
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -364,7 +364,7 @@ struct perf_event_mmap_page {
         /*
          * Bits needed to read the hw events in user-space.
          *
-         *   u32 seq, time_mult, time_shift, idx, width;
+         *   u32 seq, time_mult, time_shift, index, width;
          *   u64 count, enabled, running;
          *   u64 cyc, time_offset;
          *   s64 pmc = 0;
@@ -383,11 +383,11 @@ struct perf_event_mmap_page {
          *       time_shift  = pc->time_shift;
          *     }
          *
-         *     idx = pc->index;
+         *     index = pc->index;
          *     count = pc->offset;
-         *     if (pc->cap_usr_rdpmc && idx) {
+         *     if (pc->cap_user_rdpmc && index) {
          *       width = pc->pmc_width;
-         *       pmc = rdpmc(idx - 1);
+         *       pmc = rdpmc(index - 1);
          *     }
          *
          *     barrier();
@@ -415,7 +415,7 @@ struct perf_event_mmap_page {
         };
 
         /*
-         * If cap_usr_rdpmc this field provides the bit-width of the value
+         * If cap_user_rdpmc this field provides the bit-width of the value
          * read using the rdpmc() or equivalent instruction. This can be used
          * to sign extend the result like:
          *
@@ -439,10 +439,10 @@ struct perf_event_mmap_page {
          *
          * Where time_offset,time_mult,time_shift and cyc are read in the
          * seqcount loop described above. This delta can then be added to
-         * enabled and possible running (if idx), improving the scaling:
+         * enabled and possible running (if index), improving the scaling:
          *
          *   enabled += delta;
-         *   if (idx)
+         *   if (index)
          *     running += delta;
          *
          *   quot = count / running;
diff --git a/include/uapi/linux/sched.h b/include/uapi/linux/sched.h
index 34f9d7387d13..b932be9f5c5b 100644
--- a/include/uapi/linux/sched.h
+++ b/include/uapi/linux/sched.h
@@ -13,7 +13,7 @@
 #define CLONE_VFORK     0x00004000      /* set if the parent wants the child to wake it up on mm_release */
 #define CLONE_PARENT    0x00008000      /* set if we want to have the same parent as the cloner */
 #define CLONE_THREAD    0x00010000      /* Same thread group? */
-#define CLONE_NEWNS     0x00020000      /* New namespace group? */
+#define CLONE_NEWNS     0x00020000      /* New mount namespace group */
 #define CLONE_SYSVSEM   0x00040000      /* share system V SEM_UNDO semantics */
 #define CLONE_SETTLS    0x00080000      /* create a new TLS for the child */
 #define CLONE_PARENT_SETTID     0x00100000      /* set the TID in the parent */
diff --git a/include/uapi/linux/target_core_user.h b/include/uapi/linux/target_core_user.h
new file mode 100644
index 000000000000..7dcfbe6771b1
--- /dev/null
+++ b/include/uapi/linux/target_core_user.h
@@ -0,0 +1,142 @@
+#ifndef __TARGET_CORE_USER_H
+#define __TARGET_CORE_USER_H
+
+/* This header will be used by application too */
+
+#include <linux/types.h>
+#include <linux/uio.h>
+
+#ifndef __packed
+#define __packed                        __attribute__((packed))
+#endif
+
+#define TCMU_VERSION "1.0"
+
+/*
+ * Ring Design
+ * -----------
+ *
+ * The mmaped area is divided into three parts:
+ * 1) The mailbox (struct tcmu_mailbox, below)
+ * 2) The command ring
+ * 3) Everything beyond the command ring (data)
+ *
+ * The mailbox tells userspace the offset of the command ring from the
+ * start of the shared memory region, and how big the command ring is.
+ *
+ * The kernel passes SCSI commands to userspace by putting a struct
+ * tcmu_cmd_entry in the ring, updating mailbox->cmd_head, and poking
+ * userspace via uio's interrupt mechanism.
+ *
+ * tcmu_cmd_entry contains a header. If the header type is PAD,
+ * userspace should skip hdr->length bytes (mod cmdr_size) to find the
+ * next cmd_entry.
+ *
+ * Otherwise, the entry will contain offsets into the mmaped area that
+ * contain the cdb and data buffers -- the latter accessible via the
+ * iov array. iov addresses are also offsets into the shared area.
+ *
+ * When userspace is completed handling the command, set
+ * entry->rsp.scsi_status, fill in rsp.sense_buffer if appropriate,
+ * and also set mailbox->cmd_tail equal to the old cmd_tail plus
+ * hdr->length, mod cmdr_size. If cmd_tail doesn't equal cmd_head, it
+ * should process the next packet the same way, and so on.
+ */
+
+#define TCMU_MAILBOX_VERSION 1
+#define ALIGN_SIZE 64 /* Should be enough for most CPUs */
+
+struct tcmu_mailbox {
+        __u16 version;
+        __u16 flags;
+        __u32 cmdr_off;
+        __u32 cmdr_size;
+
+        __u32 cmd_head;
+
+        /* Updated by user. On its own cacheline */
+        __u32 cmd_tail __attribute__((__aligned__(ALIGN_SIZE)));
+
+} __packed;
+
+enum tcmu_opcode {
+        TCMU_OP_PAD = 0,
+        TCMU_OP_CMD,
+};
+
+/*
+ * Only a few opcodes, and length is 8-byte aligned, so use low bits for opcode.
+ */
+struct tcmu_cmd_entry_hdr {
+                __u32 len_op;
+} __packed;
+
+#define TCMU_OP_MASK 0x7
+
+static inline enum tcmu_opcode tcmu_hdr_get_op(struct tcmu_cmd_entry_hdr *hdr)
+{
+        return hdr->len_op & TCMU_OP_MASK;
+}
+
+static inline void tcmu_hdr_set_op(struct tcmu_cmd_entry_hdr *hdr, enum tcmu_opcode op)
+{
+        hdr->len_op &= ~TCMU_OP_MASK;
+        hdr->len_op |= (op & TCMU_OP_MASK);
+}
+
+static inline __u32 tcmu_hdr_get_len(struct tcmu_cmd_entry_hdr *hdr)
+{
+        return hdr->len_op & ~TCMU_OP_MASK;
+}
+
+static inline void tcmu_hdr_set_len(struct tcmu_cmd_entry_hdr *hdr, __u32 len)
+{
+        hdr->len_op &= TCMU_OP_MASK;
+        hdr->len_op |= len;
+}
+
+/* Currently the same as SCSI_SENSE_BUFFERSIZE */
+#define TCMU_SENSE_BUFFERSIZE 96
+
+struct tcmu_cmd_entry {
+        struct tcmu_cmd_entry_hdr hdr;
+
+        uint16_t cmd_id;
+        uint16_t __pad1;
+
+        union {
+                struct {
+                        uint64_t cdb_off;
+                        uint64_t iov_cnt;
+                        struct iovec iov[0];
+                } req;
+                struct {
+                        uint8_t scsi_status;
+                        uint8_t __pad1;
+                        uint16_t __pad2;
+                        uint32_t __pad3;
+                        char sense_buffer[TCMU_SENSE_BUFFERSIZE];
+                } rsp;
+        };
+
+} __packed;
+
+#define TCMU_OP_ALIGN_SIZE sizeof(uint64_t)
+
+enum tcmu_genl_cmd {
+        TCMU_CMD_UNSPEC,
+        TCMU_CMD_ADDED_DEVICE,
+        TCMU_CMD_REMOVED_DEVICE,
+        __TCMU_CMD_MAX,
+};
+#define TCMU_CMD_MAX (__TCMU_CMD_MAX - 1)
+
+enum tcmu_genl_attr {
+        TCMU_ATTR_UNSPEC,
+        TCMU_ATTR_DEVICE,
+        TCMU_ATTR_MINOR,
+        __TCMU_ATTR_MAX,
+};
+#define TCMU_ATTR_MAX (__TCMU_ATTR_MAX - 1)
+
+#endif
diff --git a/include/uapi/linux/v4l2-dv-timings.h b/include/uapi/linux/v4l2-dv-timings.h
index 6a0764c89fcb..6c8f159e416e 100644
--- a/include/uapi/linux/v4l2-dv-timings.h
+++ b/include/uapi/linux/v4l2-dv-timings.h
@@ -21,8 +21,17 @@
 #ifndef _V4L2_DV_TIMINGS_H
 #define _V4L2_DV_TIMINGS_H
 
+#if __GNUC__ < 4 || (__GNUC__ == 4 && (__GNUC_MINOR__ < 6))
+/* Sadly gcc versions older than 4.6 have a bug in how they initialize
+   anonymous unions where they require additional curly brackets.
+   This violates the C1x standard. This workaround adds the curly brackets
+   if needed. */
 #define V4L2_INIT_BT_TIMINGS(_width, args...) \
         { .bt = { _width , ## args } }
+#else
+#define V4L2_INIT_BT_TIMINGS(_width, args...) \
+        .bt = { _width , ## args }
+#endif
 
 /* CEA-861-E timings (i.e. standard HDTV timings) */