Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: (24 commits)
  I/OAT: I/OAT version 3.0 support
  I/OAT: tcp_dma_copybreak default value dependent on I/OAT version
  I/OAT: Add watchdog/reset functionality to ioatdma
  iop_adma: cleanup iop_chan_xor_slot_count
  iop_adma: document how to calculate the minimum descriptor pool size
  iop_adma: directly reclaim descriptors on allocation failure
  async_tx: make async_tx_test_ack a boolean routine
  async_tx: remove depend_tx from async_tx_sync_epilog
  async_tx: export async_tx_quiesce
  async_tx: fix handling of the "out of descriptor" condition in async_xor
  async_tx: ensure the xor destination buffer remains dma-mapped
  async_tx: list_for_each_entry_rcu() cleanup
  dmaengine: Driver for the Synopsys DesignWare DMA controller
  dmaengine: Add slave DMA interface
  dmaengine: add DMA_COMPL_SKIP_{SRC,DEST}_UNMAP flags to control dma unmap
  dmaengine: Add dma_client parameter to device_alloc_chan_resources
  dmatest: Simple DMA memcpy test client
  dmaengine: DMA engine driver for Marvell XOR engine
  iop-adma: fix platform driver hotplug/coldplug
  dmaengine: track the number of clients using a channel
  ...

Fixed up conflict in drivers/dca/dca-sysfs.c manually

3 files changed, 37 insertions, 13 deletions

diff --git a/include/asm-arm/arch-iop13xx/adma.h b/include/asm-arm/arch-iop13xx/adma.h
index 90d14ee564f5..ef4f5da2029f 100644
--- a/include/asm-arm/arch-iop13xx/adma.h
+++ b/include/asm-arm/arch-iop13xx/adma.h
@@ -198,17 +198,13 @@ iop_chan_memset_slot_count(size_t len, int *slots_per_op)
 static inline int
 iop_chan_xor_slot_count(size_t len, int src_cnt, int *slots_per_op)
 {
-        int num_slots;
-        /* slots_to_find = 1 for basic descriptor + 1 per 4 sources above 1
-         * (1 source => 8 bytes) (1 slot => 32 bytes)
-         */
-        num_slots = 1 + (((src_cnt - 1) << 3) >> 5);
-        if (((src_cnt - 1) << 3) & 0x1f)
-                num_slots++;
-
-        *slots_per_op = num_slots;
-
-        return num_slots;
+        static const char slot_count_table[] = { 1, 2, 2, 2,
+                                                 2, 3, 3, 3,
+                                                 3, 4, 4, 4,
+                                                 4, 5, 5, 5,
+                                                };
+        *slots_per_op = slot_count_table[src_cnt - 1];
+        return *slots_per_op;
 }
 
 #define ADMA_MAX_BYTE_COUNT     (16 * 1024 * 1024)
diff --git a/include/asm-arm/hardware/iop3xx-adma.h b/include/asm-arm/hardware/iop3xx-adma.h
index a32b86ac62aa..af64676650a2 100644
--- a/include/asm-arm/hardware/iop3xx-adma.h
+++ b/include/asm-arm/hardware/iop3xx-adma.h
@@ -260,7 +260,7 @@ static inline int iop_chan_memset_slot_count(size_t len, int *slots_per_op)
 static inline int iop3xx_aau_xor_slot_count(size_t len, int src_cnt,
                                         int *slots_per_op)
 {
-        static const int slot_count_table[] = { 0,
+        static const char slot_count_table[] = {
                                                 1, 1, 1, 1, /* 01 - 04 */
                                                 2, 2, 2, 2, /* 05 - 08 */
                                                 4, 4, 4, 4, /* 09 - 12 */
@@ -270,7 +270,7 @@ static inline int iop3xx_aau_xor_slot_count(size_t len, int src_cnt,
                                                 8, 8, 8, 8, /* 25 - 28 */
                                                 8, 8, 8, 8, /* 29 - 32 */
                                               };
-        *slots_per_op = slot_count_table[src_cnt];
+        *slots_per_op = slot_count_table[src_cnt - 1];
         return *slots_per_op;
 }
 
diff --git a/include/asm-arm/plat-orion/mv_xor.h b/include/asm-arm/plat-orion/mv_xor.h
new file mode 100644
index 000000000000..c349e8ff5cc0
--- /dev/null
+++ b/include/asm-arm/plat-orion/mv_xor.h
@@ -0,0 +1,28 @@
+/*
+ * Marvell XOR platform device data definition file.
+ */
+
+#ifndef __ASM_PLAT_ORION_MV_XOR_H
+#define __ASM_PLAT_ORION_MV_XOR_H
+
+#include <linux/dmaengine.h>
+#include <linux/mbus.h>
+
+#define MV_XOR_SHARED_NAME      "mv_xor_shared"
+#define MV_XOR_NAME             "mv_xor"
+
+struct mbus_dram_target_info;
+
+struct mv_xor_platform_shared_data {
+        struct mbus_dram_target_info    *dram;
+};
+
+struct mv_xor_platform_data {
+        struct platform_device          *shared;
+        int                             hw_id;
+        dma_cap_mask_t                  cap_mask;
+        size_t                          pool_size;
+};
+
+
+#endif