35 files changed, 686 insertions, 185 deletions

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index a603bbf9b1b7..66e012cd3271 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -582,18 +582,18 @@ static const struct pci_device_id ahci_pci_tbl[] = {
         { PCI_VDEVICE(NVIDIA, 0x0abd), board_ahci },            /* MCP79 */
         { PCI_VDEVICE(NVIDIA, 0x0abe), board_ahci },            /* MCP79 */
         { PCI_VDEVICE(NVIDIA, 0x0abf), board_ahci },            /* MCP79 */
-        { PCI_VDEVICE(NVIDIA, 0x0bc8), board_ahci },            /* MCP7B */
-        { PCI_VDEVICE(NVIDIA, 0x0bc9), board_ahci },            /* MCP7B */
-        { PCI_VDEVICE(NVIDIA, 0x0bca), board_ahci },            /* MCP7B */
-        { PCI_VDEVICE(NVIDIA, 0x0bcb), board_ahci },            /* MCP7B */
-        { PCI_VDEVICE(NVIDIA, 0x0bcc), board_ahci },            /* MCP7B */
-        { PCI_VDEVICE(NVIDIA, 0x0bcd), board_ahci },            /* MCP7B */
-        { PCI_VDEVICE(NVIDIA, 0x0bce), board_ahci },            /* MCP7B */
-        { PCI_VDEVICE(NVIDIA, 0x0bcf), board_ahci },            /* MCP7B */
-        { PCI_VDEVICE(NVIDIA, 0x0bc4), board_ahci },            /* MCP7B */
-        { PCI_VDEVICE(NVIDIA, 0x0bc5), board_ahci },            /* MCP7B */
-        { PCI_VDEVICE(NVIDIA, 0x0bc6), board_ahci },            /* MCP7B */
-        { PCI_VDEVICE(NVIDIA, 0x0bc7), board_ahci },            /* MCP7B */
+        { PCI_VDEVICE(NVIDIA, 0x0d84), board_ahci },            /* MCP89 */
+        { PCI_VDEVICE(NVIDIA, 0x0d85), board_ahci },            /* MCP89 */
+        { PCI_VDEVICE(NVIDIA, 0x0d86), board_ahci },            /* MCP89 */
+        { PCI_VDEVICE(NVIDIA, 0x0d87), board_ahci },            /* MCP89 */
+        { PCI_VDEVICE(NVIDIA, 0x0d88), board_ahci },            /* MCP89 */
+        { PCI_VDEVICE(NVIDIA, 0x0d89), board_ahci },            /* MCP89 */
+        { PCI_VDEVICE(NVIDIA, 0x0d8a), board_ahci },            /* MCP89 */
+        { PCI_VDEVICE(NVIDIA, 0x0d8b), board_ahci },            /* MCP89 */
+        { PCI_VDEVICE(NVIDIA, 0x0d8c), board_ahci },            /* MCP89 */
+        { PCI_VDEVICE(NVIDIA, 0x0d8d), board_ahci },            /* MCP89 */
+        { PCI_VDEVICE(NVIDIA, 0x0d8e), board_ahci },            /* MCP89 */
+        { PCI_VDEVICE(NVIDIA, 0x0d8f), board_ahci },            /* MCP89 */
 
         /* SiS */
         { PCI_VDEVICE(SI, 0x1184), board_ahci },                /* SiS 966 */
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 9fbf0595f3d4..060bcd601f57 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -1322,14 +1322,16 @@ static u64 ata_id_n_sectors(const u16 *id)
 {
         if (ata_id_has_lba(id)) {
                 if (ata_id_has_lba48(id))
-                        return ata_id_u64(id, 100);
+                        return ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
                 else
-                        return ata_id_u32(id, 60);
+                        return ata_id_u32(id, ATA_ID_LBA_CAPACITY);
         } else {
                 if (ata_id_current_chs_valid(id))
-                        return ata_id_u32(id, 57);
+                        return id[ATA_ID_CUR_CYLS] * id[ATA_ID_CUR_HEADS] *
+                               id[ATA_ID_CUR_SECTORS];
                 else
-                        return id[1] * id[3] * id[6];
+                        return id[ATA_ID_CYLS] * id[ATA_ID_HEADS] *
+                               id[ATA_ID_SECTORS];
         }
 }
 
@@ -4612,7 +4614,7 @@ void ata_sg_clean(struct ata_queued_cmd *qc)
         VPRINTK("unmapping %u sg elements\n", qc->n_elem);
 
         if (qc->n_elem)
-                dma_unmap_sg(ap->dev, sg, qc->n_elem, dir);
+                dma_unmap_sg(ap->dev, sg, qc->orig_n_elem, dir);
 
         qc->flags &= ~ATA_QCFLAG_DMAMAP;
         qc->sg = NULL;
@@ -4727,7 +4729,7 @@ static int ata_sg_setup(struct ata_queued_cmd *qc)
                 return -1;
 
         DPRINTK("%d sg elements mapped\n", n_elem);
-
+        qc->orig_n_elem = qc->n_elem;
         qc->n_elem = n_elem;
         qc->flags |= ATA_QCFLAG_DMAMAP;
 
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index ce2ef0475339..ea890911d4fa 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -2423,11 +2423,14 @@ int ata_eh_reset(struct ata_link *link, int classify,
                 }
 
                 /* prereset() might have cleared ATA_EH_RESET.  If so,
-                 * bang classes and return.
+                 * bang classes, thaw and return.
                  */
                 if (reset && !(ehc->i.action & ATA_EH_RESET)) {
                         ata_for_each_dev(dev, link, ALL)
                                 classes[dev->devno] = ATA_DEV_NONE;
+                        if ((ap->pflags & ATA_PFLAG_FROZEN) &&
+                            ata_is_host_link(link))
+                                ata_eh_thaw_port(ap);
                         rc = 0;
                         goto out;
                 }
@@ -2901,7 +2904,7 @@ static int atapi_eh_clear_ua(struct ata_device *dev)
         int i;
 
         for (i = 0; i < ATA_EH_UA_TRIES; i++) {
-                u8 sense_buffer[SCSI_SENSE_BUFFERSIZE];
+                u8 *sense_buffer = dev->link->ap->sector_buf;
                 u8 sense_key = 0;
                 unsigned int err_mask;
 
diff --git a/drivers/ata/sata_nv.c b/drivers/ata/sata_nv.c
index 55a8eed3f3a3..f65b53785a8f 100644
--- a/drivers/ata/sata_nv.c
+++ b/drivers/ata/sata_nv.c
@@ -2523,7 +2523,7 @@ static void __exit nv_exit(void)
 module_init(nv_init);
 module_exit(nv_exit);
 module_param_named(adma, adma_enabled, bool, 0444);
-MODULE_PARM_DESC(adma, "Enable use of ADMA (Default: true)");
+MODULE_PARM_DESC(adma, "Enable use of ADMA (Default: false)");
 module_param_named(swncq, swncq_enabled, bool, 0444);
 MODULE_PARM_DESC(swncq, "Enable use of SWNCQ (Default: true)");
 
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index b5a061114630..4f9b6d792017 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -3606,11 +3606,9 @@ static int __devinit cciss_init_one(struct pci_dev *pdev,
                 if (cciss_hard_reset_controller(pdev) || cciss_reset_msi(pdev))
                         return -ENODEV;
 
-                /* Some devices (notably the HP Smart Array 5i Controller)
-                   need a little pause here */
-                schedule_timeout_uninterruptible(30*HZ);
-
-                /* Now try to get the controller to respond to a no-op */
+                /* Now try to get the controller to respond to a no-op. Some
+                   devices (notably the HP Smart Array 5i Controller) need
+                   up to 30 seconds to respond. */
                 for (i=0; i<30; i++) {
                         if (cciss_noop(pdev) == 0)
                                 break;
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index edbaac6c0573..bf0345577672 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -392,8 +392,7 @@ lo_splice_actor(struct pipe_inode_info *pipe, struct pipe_buffer *buf,
         struct loop_device *lo = p->lo;
         struct page *page = buf->page;
         sector_t IV;
-        size_t size;
-        int ret;
+        int size, ret;
 
         ret = buf->ops->confirm(pipe, buf);
         if (unlikely(ret))
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index b6c8ce254359..8f905089b72b 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -977,6 +977,8 @@ static void backend_changed(struct xenbus_device *dev,
                 break;
 
         case XenbusStateClosing:
+                if (info->gd == NULL)
+                        xenbus_dev_fatal(dev, -ENODEV, "gd is NULL");
                 bd = bdget_disk(info->gd, 0);
                 if (bd == NULL)
                         xenbus_dev_fatal(dev, -ENODEV, "bdget failed");
diff --git a/drivers/dca/dca-core.c b/drivers/dca/dca-core.c
index 33bd75347518..25b743abfb59 100644
--- a/drivers/dca/dca-core.c
+++ b/drivers/dca/dca-core.c
@@ -1,5 +1,5 @@
 /*
- * Copyright(c) 2007 Intel Corporation. All rights reserved.
+ * Copyright(c) 2007 - 2009 Intel Corporation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the Free
diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 732fa1ec36ab..e190d8b30700 100644
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -430,13 +430,15 @@ late_initcall(dmatest_init);
 static void __exit dmatest_exit(void)
 {
         struct dmatest_chan *dtc, *_dtc;
+        struct dma_chan *chan;
 
         list_for_each_entry_safe(dtc, _dtc, &dmatest_channels, node) {
                 list_del(&dtc->node);
+                chan = dtc->chan;
                 dmatest_cleanup_channel(dtc);
                 pr_debug("dmatest: dropped channel %s\n",
-                         dma_chan_name(dtc->chan));
-                dma_release_channel(dtc->chan);
+                         dma_chan_name(chan));
+                dma_release_channel(chan);
         }
 }
 module_exit(dmatest_exit);
diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index 70126a606239..86d6da47f558 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -158,7 +158,8 @@ static void dma_start(struct fsl_dma_chan *fsl_chan)
 
 static void dma_halt(struct fsl_dma_chan *fsl_chan)
 {
-        int i = 0;
+        int i;
+
         DMA_OUT(fsl_chan, &fsl_chan->reg_base->mr,
                 DMA_IN(fsl_chan, &fsl_chan->reg_base->mr, 32) | FSL_DMA_MR_CA,
                 32);
@@ -166,8 +167,11 @@ static void dma_halt(struct fsl_dma_chan *fsl_chan)
                 DMA_IN(fsl_chan, &fsl_chan->reg_base->mr, 32) & ~(FSL_DMA_MR_CS
                 | FSL_DMA_MR_EMS_EN | FSL_DMA_MR_CA), 32);
 
-        while (!dma_is_idle(fsl_chan) && (i++ < 100))
+        for (i = 0; i < 100; i++) {
+                if (dma_is_idle(fsl_chan))
+                        break;
                 udelay(10);
+        }
         if (i >= 100 && !dma_is_idle(fsl_chan))
                 dev_err(fsl_chan->dev, "DMA halt timeout!\n");
 }
diff --git a/drivers/dma/ioat.c b/drivers/dma/ioat.c
index 4105d6575b64..ed83dd9df192 100644
--- a/drivers/dma/ioat.c
+++ b/drivers/dma/ioat.c
@@ -1,6 +1,6 @@
 /*
  * Intel I/OAT DMA Linux driver
- * Copyright(c) 2007 Intel Corporation.
+ * Copyright(c) 2007 - 2009 Intel Corporation.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
diff --git a/drivers/dma/ioat_dca.c b/drivers/dma/ioat_dca.c
index 6cf622da0286..c012a1e15043 100644
--- a/drivers/dma/ioat_dca.c
+++ b/drivers/dma/ioat_dca.c
@@ -1,6 +1,6 @@
 /*
  * Intel I/OAT DMA Linux driver
- * Copyright(c) 2007 Intel Corporation.
+ * Copyright(c) 2007 - 2009 Intel Corporation.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -49,6 +49,23 @@
 
 #define DCA_TAG_MAP_MASK 0xDF
 
+/* expected tag map bytes for I/OAT ver.2 */
+#define DCA2_TAG_MAP_BYTE0 0x80
+#define DCA2_TAG_MAP_BYTE1 0x0
+#define DCA2_TAG_MAP_BYTE2 0x81
+#define DCA2_TAG_MAP_BYTE3 0x82
+#define DCA2_TAG_MAP_BYTE4 0x82
+
+/* verify if tag map matches expected values */
+static inline int dca2_tag_map_valid(u8 *tag_map)
+{
+        return ((tag_map[0] == DCA2_TAG_MAP_BYTE0) &&
+                (tag_map[1] == DCA2_TAG_MAP_BYTE1) &&
+                (tag_map[2] == DCA2_TAG_MAP_BYTE2) &&
+                (tag_map[3] == DCA2_TAG_MAP_BYTE3) &&
+                (tag_map[4] == DCA2_TAG_MAP_BYTE4));
+}
+
 /*
  * "Legacy" DCA systems do not implement the DCA register set in the
  * I/OAT device.  Software needs direct support for their tag mappings.
@@ -452,6 +469,13 @@ struct dca_provider *ioat2_dca_init(struct pci_dev *pdev, void __iomem *iobase)
                         ioatdca->tag_map[i] = 0;
         }
 
+        if (!dca2_tag_map_valid(ioatdca->tag_map)) {
+                dev_err(&pdev->dev, "APICID_TAG_MAP set incorrectly by BIOS, "
+                        "disabling DCA\n");
+                free_dca_provider(dca);
+                return NULL;
+        }
+
         err = register_dca_provider(dca, &pdev->dev);
         if (err) {
                 free_dca_provider(dca);
diff --git a/drivers/dma/ioat_dma.c b/drivers/dma/ioat_dma.c
index b3759c4b6536..5905cd36bcd2 100644
--- a/drivers/dma/ioat_dma.c
+++ b/drivers/dma/ioat_dma.c
@@ -1,6 +1,6 @@
 /*
  * Intel I/OAT DMA Linux driver
- * Copyright(c) 2004 - 2007 Intel Corporation.
+ * Copyright(c) 2004 - 2009 Intel Corporation.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -189,11 +189,13 @@ static int ioat_dma_enumerate_channels(struct ioatdma_device *device)
                 ioat_chan->xfercap = xfercap;
                 ioat_chan->desccount = 0;
                 INIT_DELAYED_WORK(&ioat_chan->work, ioat_dma_chan_reset_part2);
-                if (ioat_chan->device->version != IOAT_VER_1_2) {
-                        writel(IOAT_DCACTRL_CMPL_WRITE_ENABLE
-                                        | IOAT_DMA_DCA_ANY_CPU,
-                                ioat_chan->reg_base + IOAT_DCACTRL_OFFSET);
-                }
+                if (ioat_chan->device->version == IOAT_VER_2_0)
+                        writel(IOAT_DCACTRL_CMPL_WRITE_ENABLE |
+                               IOAT_DMA_DCA_ANY_CPU,
+                               ioat_chan->reg_base + IOAT_DCACTRL_OFFSET);
+                else if (ioat_chan->device->version == IOAT_VER_3_0)
+                        writel(IOAT_DMA_DCA_ANY_CPU,
+                               ioat_chan->reg_base + IOAT_DCACTRL_OFFSET);
                 spin_lock_init(&ioat_chan->cleanup_lock);
                 spin_lock_init(&ioat_chan->desc_lock);
                 INIT_LIST_HEAD(&ioat_chan->free_desc);
@@ -1169,9 +1171,8 @@ static void ioat_dma_memcpy_cleanup(struct ioat_dma_chan *ioat_chan)
                                  * up if the client is done with the descriptor
                                  */
                                 if (async_tx_test_ack(&desc->async_tx)) {
-                                        list_del(&desc->node);
-                                        list_add_tail(&desc->node,
-                                                      &ioat_chan->free_desc);
+                                        list_move_tail(&desc->node,
+                                                       &ioat_chan->free_desc);
                                 } else
                                         desc->async_tx.cookie = 0;
                         } else {
@@ -1362,6 +1363,7 @@ static int ioat_dma_self_test(struct ioatdma_device *device)
         dma_cookie_t cookie;
         int err = 0;
         struct completion cmp;
+        unsigned long tmo;
 
         src = kzalloc(sizeof(u8) * IOAT_TEST_SIZE, GFP_KERNEL);
         if (!src)
@@ -1413,9 +1415,10 @@ static int ioat_dma_self_test(struct ioatdma_device *device)
         }
         device->common.device_issue_pending(dma_chan);
 
-        wait_for_completion_timeout(&cmp, msecs_to_jiffies(3000));
+        tmo = wait_for_completion_timeout(&cmp, msecs_to_jiffies(3000));
 
-        if (device->common.device_is_tx_complete(dma_chan, cookie, NULL, NULL)
+        if (tmo == 0 ||
+            device->common.device_is_tx_complete(dma_chan, cookie, NULL, NULL)
                                         != DMA_SUCCESS) {
                 dev_err(&device->pdev->dev,
                         "Self-test copy timed out, disabling\n");
@@ -1657,6 +1660,13 @@ struct ioatdma_device *ioat_dma_probe(struct pci_dev *pdev,
                 " %d channels, device version 0x%02x, driver version %s\n",
                 device->common.chancnt, device->version, IOAT_DMA_VERSION);
 
+        if (!device->common.chancnt) {
+                dev_err(&device->pdev->dev,
+                        "Intel(R) I/OAT DMA Engine problem found: "
+                        "zero channels detected\n");
+                goto err_setup_interrupts;
+        }
+
         err = ioat_dma_setup_interrupts(device);
         if (err)
                 goto err_setup_interrupts;
@@ -1696,6 +1706,9 @@ void ioat_dma_remove(struct ioatdma_device *device)
         struct dma_chan *chan, *_chan;
         struct ioat_dma_chan *ioat_chan;
 
+        if (device->version != IOAT_VER_3_0)
+                cancel_delayed_work(&device->work);
+
         ioat_dma_remove_interrupts(device);
 
         dma_async_device_unregister(&device->common);
@@ -1707,10 +1720,6 @@ void ioat_dma_remove(struct ioatdma_device *device)
         pci_release_regions(device->pdev);
         pci_disable_device(device->pdev);
 
-        if (device->version != IOAT_VER_3_0) {
-                cancel_delayed_work(&device->work);
-        }
-
         list_for_each_entry_safe(chan, _chan,
                                  &device->common.channels, device_node) {
                 ioat_chan = to_ioat_chan(chan);
diff --git a/drivers/dma/ioatdma.h b/drivers/dma/ioatdma.h
index a3306d0e1372..a52ff4bd4601 100644
--- a/drivers/dma/ioatdma.h
+++ b/drivers/dma/ioatdma.h
@@ -1,5 +1,5 @@
 /*
- * Copyright(c) 2004 - 2007 Intel Corporation. All rights reserved.
+ * Copyright(c) 2004 - 2009 Intel Corporation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the Free
@@ -29,7 +29,7 @@
 #include <linux/pci_ids.h>
 #include <net/tcp.h>
 
-#define IOAT_DMA_VERSION  "3.30"
+#define IOAT_DMA_VERSION  "3.64"
 
 enum ioat_interrupt {
         none = 0,
@@ -135,12 +135,14 @@ static inline void ioat_set_tcp_copy_break(struct ioatdma_device *dev)
         #ifdef CONFIG_NET_DMA
         switch (dev->version) {
         case IOAT_VER_1_2:
-        case IOAT_VER_3_0:
                 sysctl_tcp_dma_copybreak = 4096;
                 break;
         case IOAT_VER_2_0:
                 sysctl_tcp_dma_copybreak = 2048;
                 break;
+        case IOAT_VER_3_0:
+                sysctl_tcp_dma_copybreak = 262144;
+                break;
         }
         #endif
 }
diff --git a/drivers/dma/ioatdma_hw.h b/drivers/dma/ioatdma_hw.h
index f1ae2c776f74..afa57eef86c9 100644
--- a/drivers/dma/ioatdma_hw.h
+++ b/drivers/dma/ioatdma_hw.h
@@ -1,5 +1,5 @@
 /*
- * Copyright(c) 2004 - 2007 Intel Corporation. All rights reserved.
+ * Copyright(c) 2004 - 2009 Intel Corporation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the Free
diff --git a/drivers/dma/ioatdma_registers.h b/drivers/dma/ioatdma_registers.h
index 827cb503cac6..49bc277424f8 100644
--- a/drivers/dma/ioatdma_registers.h
+++ b/drivers/dma/ioatdma_registers.h
@@ -1,5 +1,5 @@
 /*
- * Copyright(c) 2004 - 2007 Intel Corporation. All rights reserved.
+ * Copyright(c) 2004 - 2009 Intel Corporation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the Free
diff --git a/drivers/dma/iop-adma.c b/drivers/dma/iop-adma.c
index 647374acba94..16adbe61cfb2 100644
--- a/drivers/dma/iop-adma.c
+++ b/drivers/dma/iop-adma.c
@@ -928,19 +928,19 @@ iop_adma_xor_zero_sum_self_test(struct iop_adma_device *device)
 
         for (src_idx = 0; src_idx < IOP_ADMA_NUM_SRC_TEST; src_idx++) {
                 xor_srcs[src_idx] = alloc_page(GFP_KERNEL);
-                if (!xor_srcs[src_idx])
-                        while (src_idx--) {
+                if (!xor_srcs[src_idx]) {
+                        while (src_idx--)
                                 __free_page(xor_srcs[src_idx]);
-                                return -ENOMEM;
-                        }
+                        return -ENOMEM;
+                }
         }
 
         dest = alloc_page(GFP_KERNEL);
-        if (!dest)
-                while (src_idx--) {
+        if (!dest) {
+                while (src_idx--)
                         __free_page(xor_srcs[src_idx]);
-                        return -ENOMEM;
-                }
+                return -ENOMEM;
+        }
 
         /* Fill in src buffers */
         for (src_idx = 0; src_idx < IOP_ADMA_NUM_SRC_TEST; src_idx++) {
diff --git a/drivers/dma/ipu/ipu_idmac.c b/drivers/dma/ipu/ipu_idmac.c
index 1f154d08e98f..ae50a9d1a4e6 100644
--- a/drivers/dma/ipu/ipu_idmac.c
+++ b/drivers/dma/ipu/ipu_idmac.c
@@ -729,7 +729,7 @@ static int ipu_init_channel_buffer(struct idmac_channel *ichan,
 
         ichan->status = IPU_CHANNEL_READY;
 
-        spin_unlock_irqrestore(ipu->lock, flags);
+        spin_unlock_irqrestore(&ipu->lock, flags);
 
         return 0;
 }
diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c
index 5d5d5b31867f..cb7f26fb9f18 100644
--- a/drivers/dma/mv_xor.c
+++ b/drivers/dma/mv_xor.c
@@ -1019,19 +1019,19 @@ mv_xor_xor_self_test(struct mv_xor_device *device)
 
         for (src_idx = 0; src_idx < MV_XOR_NUM_SRC_TEST; src_idx++) {
                 xor_srcs[src_idx] = alloc_page(GFP_KERNEL);
-                if (!xor_srcs[src_idx])
-                        while (src_idx--) {
+                if (!xor_srcs[src_idx]) {
+                        while (src_idx--)
                                 __free_page(xor_srcs[src_idx]);
-                                return -ENOMEM;
-                        }
+                        return -ENOMEM;
+                }
         }
 
         dest = alloc_page(GFP_KERNEL);
-        if (!dest)
-                while (src_idx--) {
+        if (!dest) {
+                while (src_idx--)
                         __free_page(xor_srcs[src_idx]);
-                        return -ENOMEM;
-                }
+                return -ENOMEM;
+        }
 
         /* Fill in src buffers */
         for (src_idx = 0; src_idx < MV_XOR_NUM_SRC_TEST; src_idx++) {
diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c
index 096e2a37446d..7c8b15b22bf2 100644
--- a/drivers/gpu/drm/drm_stub.c
+++ b/drivers/gpu/drm/drm_stub.c
@@ -168,7 +168,7 @@ int drm_setmaster_ioctl(struct drm_device *dev, void *data,
             file_priv->minor->master != file_priv->master) {
                 mutex_lock(&dev->struct_mutex);
                 file_priv->minor->master = drm_master_get(file_priv->master);
-                mutex_lock(&dev->struct_mutex);
+                mutex_unlock(&dev->struct_mutex);
         }
 
         return 0;
diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig
index e072903b12f0..5ea3bfad172a 100644
--- a/drivers/ide/Kconfig
+++ b/drivers/ide/Kconfig
@@ -721,6 +721,11 @@ config BLK_DEV_IDE_TX4939
         depends on SOC_TX4939
         select BLK_DEV_IDEDMA_SFF
 
+config BLK_DEV_IDE_AT91
+        tristate "Atmel AT91 (SAM9, CAP9, AT572D940HF) IDE support"
+        depends on ARM && ARCH_AT91 && !ARCH_AT91RM9200 && !ARCH_AT91X40
+        select IDE_TIMINGS
+
 config IDE_ARM
         tristate "ARM IDE support"
         depends on ARM && (ARCH_RPC || ARCH_SHARK)
diff --git a/drivers/ide/Makefile b/drivers/ide/Makefile
index d0e3d7d5b467..1c326d94aa6d 100644
--- a/drivers/ide/Makefile
+++ b/drivers/ide/Makefile
@@ -116,3 +116,4 @@ obj-$(CONFIG_BLK_DEV_IDE_AU1XXX)	+= au1xxx-ide.o
 
 obj-$(CONFIG_BLK_DEV_IDE_TX4938)        += tx4938ide.o
 obj-$(CONFIG_BLK_DEV_IDE_TX4939)        += tx4939ide.o
+obj-$(CONFIG_BLK_DEV_IDE_AT91)          += at91_ide.o
diff --git a/drivers/ide/at91_ide.c b/drivers/ide/at91_ide.c
new file mode 100644
index 000000000000..1bb50f46388d
--- /dev/null
+++ b/drivers/ide/at91_ide.c
@@ -0,0 +1,467 @@
+/*
+ * IDE host driver for AT91 (SAM9, CAP9, AT572D940HF) Static Memory Controller
+ * with Compact Flash True IDE logic
+ *
+ * Copyright (c) 2008, 2009 Kelvatek Ltd.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/ide.h>
+#include <linux/platform_device.h>
+
+#include <mach/board.h>
+#include <mach/gpio.h>
+#include <mach/at91sam9263.h>
+#include <mach/at91sam9_smc.h>
+#include <mach/at91sam9263_matrix.h>
+
+#define DRV_NAME "at91_ide"
+
+#define perr(fmt, args...) pr_err(DRV_NAME ": " fmt, ##args)
+#define pdbg(fmt, args...) pr_debug("%s " fmt, __func__, ##args)
+
+/*
+ * Access to IDE device is possible through EBI Static Memory Controller
+ * with Compact Flash logic. For details see EBI and SMC datasheet sections
+ * of any microcontroller from AT91SAM9 family.
+ *
+ * Within SMC chip select address space, lines A[23:21] distinguish Compact
+ * Flash modes (I/O, common memory, attribute memory, True IDE). IDE modes are:
+ *   0x00c0000 - True IDE
+ *   0x00e0000 - Alternate True IDE (Alt Status Register)
+ *
+ * On True IDE mode Task File and Data Register are mapped at the same address.
+ * To distinguish access between these two different bus data width is used:
+ * 8Bit for Task File, 16Bit for Data I/O.
+ *
+ * After initialization we do 8/16 bit flipping (changes in SMC MODE register)
+ * only inside IDE callback routines which are serialized by IDE layer,
+ * so no additional locking needed.
+ */
+
+#define TASK_FILE       0x00c00000
+#define ALT_MODE        0x00e00000
+#define REGS_SIZE       8
+
+#define enter_16bit(cs, mode) do {                                      \
+        mode = at91_sys_read(AT91_SMC_MODE(cs));                        \
+        at91_sys_write(AT91_SMC_MODE(cs), mode | AT91_SMC_DBW_16);      \
+} while (0)
+
+#define leave_16bit(cs, mode) at91_sys_write(AT91_SMC_MODE(cs), mode);
+
+static void set_smc_timings(const u8 chipselect, const u16 cycle,
+                            const u16 setup, const u16 pulse,
+                            const u16 data_float, int use_iordy)
+{
+        unsigned long mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
+                             AT91_SMC_BAT_SELECT;
+
+        /* disable or enable waiting for IORDY signal */
+        if (use_iordy)
+                mode |= AT91_SMC_EXNWMODE_READY;
+
+        /* add data float cycles if needed */
+        if (data_float)
+                mode |= AT91_SMC_TDF_(data_float);
+
+        at91_sys_write(AT91_SMC_MODE(chipselect), mode);
+
+        /* setup timings in SMC */
+        at91_sys_write(AT91_SMC_SETUP(chipselect), AT91_SMC_NWESETUP_(setup) |
+                                                   AT91_SMC_NCS_WRSETUP_(0) |
+                                                   AT91_SMC_NRDSETUP_(setup) |
+                                                   AT91_SMC_NCS_RDSETUP_(0));
+        at91_sys_write(AT91_SMC_PULSE(chipselect), AT91_SMC_NWEPULSE_(pulse) |
+                                                   AT91_SMC_NCS_WRPULSE_(cycle) |
+                                                   AT91_SMC_NRDPULSE_(pulse) |
+                                                   AT91_SMC_NCS_RDPULSE_(cycle));
+        at91_sys_write(AT91_SMC_CYCLE(chipselect), AT91_SMC_NWECYCLE_(cycle) |
+                                                   AT91_SMC_NRDCYCLE_(cycle));
+}
+
+static unsigned int calc_mck_cycles(unsigned int ns, unsigned int mck_hz)
+{
+        u64 tmp = ns;
+
+        tmp *= mck_hz;
+        tmp += 1000*1000*1000 - 1; /* round up */
+        do_div(tmp, 1000*1000*1000);
+        return (unsigned int) tmp;
+}
+
+static void apply_timings(const u8 chipselect, const u8 pio,
+                          const struct ide_timing *timing, int use_iordy)
+{
+        unsigned int t0, t1, t2, t6z;
+        unsigned int cycle, setup, pulse, data_float;
+        unsigned int mck_hz;
+        struct clk *mck;
+
+        /* see table 22 of Compact Flash standard 4.1 for the meaning,
+         * we do not stretch active (t2) time, so setup (t1) + hold time (th)
+         * assure at least minimal recovery (t2i) time */
+        t0 = timing->cyc8b;
+        t1 = timing->setup;
+        t2 = timing->act8b;
+        t6z = (pio < 5) ? 30 : 20;
+
+        pdbg("t0=%u t1=%u t2=%u t6z=%u\n", t0, t1, t2, t6z);
+
+        mck = clk_get(NULL, "mck");
+        BUG_ON(IS_ERR(mck));
+        mck_hz = clk_get_rate(mck);
+        pdbg("mck_hz=%u\n", mck_hz);
+
+        cycle = calc_mck_cycles(t0, mck_hz);
+        setup = calc_mck_cycles(t1, mck_hz);
+        pulse = calc_mck_cycles(t2, mck_hz);
+        data_float = calc_mck_cycles(t6z, mck_hz);
+
+        pdbg("cycle=%u setup=%u pulse=%u data_float=%u\n",
+             cycle, setup, pulse, data_float);
+
+        set_smc_timings(chipselect, cycle, setup, pulse, data_float, use_iordy);
+}
+
+static void at91_ide_input_data(ide_drive_t *drive, struct request *rq,
+                                void *buf, unsigned int len)
+{
+        ide_hwif_t *hwif = drive->hwif;
+        struct ide_io_ports *io_ports = &hwif->io_ports;
+        u8 chipselect = hwif->select_data;
+        unsigned long mode;
+
+        pdbg("cs %u buf %p len %d\n", chipselect, buf, len);
+
+        len++;
+
+        enter_16bit(chipselect, mode);
+        __ide_mm_insw((void __iomem *) io_ports->data_addr, buf, len / 2);
+        leave_16bit(chipselect, mode);
+}
+
+static void at91_ide_output_data(ide_drive_t *drive, struct request *rq,
+                                 void *buf, unsigned int len)
+{
+        ide_hwif_t *hwif = drive->hwif;
+        struct ide_io_ports *io_ports = &hwif->io_ports;
+        u8 chipselect = hwif->select_data;
+        unsigned long mode;
+
+        pdbg("cs %u buf %p len %d\n", chipselect,  buf, len);
+
+        enter_16bit(chipselect, mode);
+        __ide_mm_outsw((void __iomem *) io_ports->data_addr, buf, len / 2);
+        leave_16bit(chipselect, mode);
+}
+
+static u8 ide_mm_inb(unsigned long port)
+{
+        return readb((void __iomem *) port);
+}
+
+static void ide_mm_outb(u8 value, unsigned long port)
+{
+        writeb(value, (void __iomem *) port);
+}
+
+static void at91_ide_tf_load(ide_drive_t *drive, ide_task_t *task)
+{
+        ide_hwif_t *hwif = drive->hwif;
+        struct ide_io_ports *io_ports = &hwif->io_ports;
+        struct ide_taskfile *tf = &task->tf;
+        u8 HIHI = (task->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;
+
+        if (task->tf_flags & IDE_TFLAG_FLAGGED)
+                HIHI = 0xFF;
+
+        if (task->tf_flags & IDE_TFLAG_OUT_DATA) {
+                u16 data = (tf->hob_data << 8) | tf->data;
+
+                at91_ide_output_data(drive, NULL, &data, 2);
+        }
+
+        if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
+                ide_mm_outb(tf->hob_feature, io_ports->feature_addr);
+        if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
+                ide_mm_outb(tf->hob_nsect, io_ports->nsect_addr);
+        if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
+                ide_mm_outb(tf->hob_lbal, io_ports->lbal_addr);
+        if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
+                ide_mm_outb(tf->hob_lbam, io_ports->lbam_addr);
+        if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
+                ide_mm_outb(tf->hob_lbah, io_ports->lbah_addr);
+
+        if (task->tf_flags & IDE_TFLAG_OUT_FEATURE)
+                ide_mm_outb(tf->feature, io_ports->feature_addr);
+        if (task->tf_flags & IDE_TFLAG_OUT_NSECT)
+                ide_mm_outb(tf->nsect, io_ports->nsect_addr);
+        if (task->tf_flags & IDE_TFLAG_OUT_LBAL)
+                ide_mm_outb(tf->lbal, io_ports->lbal_addr);
+        if (task->tf_flags & IDE_TFLAG_OUT_LBAM)
+                ide_mm_outb(tf->lbam, io_ports->lbam_addr);
+        if (task->tf_flags & IDE_TFLAG_OUT_LBAH)
+                ide_mm_outb(tf->lbah, io_ports->lbah_addr);
+
+        if (task->tf_flags & IDE_TFLAG_OUT_DEVICE)
+                ide_mm_outb((tf->device & HIHI) | drive->select, io_ports->device_addr);
+}
+
+static void at91_ide_tf_read(ide_drive_t *drive, ide_task_t *task)
+{
+        ide_hwif_t *hwif = drive->hwif;
+        struct ide_io_ports *io_ports = &hwif->io_ports;
+        struct ide_taskfile *tf = &task->tf;
+
+        if (task->tf_flags & IDE_TFLAG_IN_DATA) {
+                u16 data;
+
+                at91_ide_input_data(drive, NULL, &data, 2);
+                tf->data = data & 0xff;
+                tf->hob_data = (data >> 8) & 0xff;
+        }
+
+        /* be sure we're looking at the low order bits */
+        ide_mm_outb(ATA_DEVCTL_OBS & ~0x80, io_ports->ctl_addr);
+
+        if (task->tf_flags & IDE_TFLAG_IN_FEATURE)
+                tf->feature = ide_mm_inb(io_ports->feature_addr);
+        if (task->tf_flags & IDE_TFLAG_IN_NSECT)
+                tf->nsect  = ide_mm_inb(io_ports->nsect_addr);
+        if (task->tf_flags & IDE_TFLAG_IN_LBAL)
+                tf->lbal   = ide_mm_inb(io_ports->lbal_addr);
+        if (task->tf_flags & IDE_TFLAG_IN_LBAM)
+                tf->lbam   = ide_mm_inb(io_ports->lbam_addr);
+        if (task->tf_flags & IDE_TFLAG_IN_LBAH)
+                tf->lbah   = ide_mm_inb(io_ports->lbah_addr);
+        if (task->tf_flags & IDE_TFLAG_IN_DEVICE)
+                tf->device = ide_mm_inb(io_ports->device_addr);
+
+        if (task->tf_flags & IDE_TFLAG_LBA48) {
+                ide_mm_outb(ATA_DEVCTL_OBS | 0x80, io_ports->ctl_addr);
+
+                if (task->tf_flags & IDE_TFLAG_IN_HOB_FEATURE)
+                        tf->hob_feature = ide_mm_inb(io_ports->feature_addr);
+                if (task->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
+                        tf->hob_nsect   = ide_mm_inb(io_ports->nsect_addr);
+                if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
+                        tf->hob_lbal    = ide_mm_inb(io_ports->lbal_addr);
+                if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
+                        tf->hob_lbam    = ide_mm_inb(io_ports->lbam_addr);
+                if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
+                        tf->hob_lbah    = ide_mm_inb(io_ports->lbah_addr);
+        }
+}
+
+static void at91_ide_set_pio_mode(ide_drive_t *drive, const u8 pio)
+{
+        struct ide_timing *timing;
+        u8 chipselect = drive->hwif->select_data;
+        int use_iordy = 0;
+
+        pdbg("chipselect %u pio %u\n", chipselect, pio);
+
+        timing = ide_timing_find_mode(XFER_PIO_0 + pio);
+        BUG_ON(!timing);
+
+        if ((pio > 2 || ata_id_has_iordy(drive->id)) &&
+            !(ata_id_is_cfa(drive->id) && pio > 4))
+                use_iordy = 1;
+
+        apply_timings(chipselect, pio, timing, use_iordy);
+}
+
+static const struct ide_tp_ops at91_ide_tp_ops = {
+        .exec_command   = ide_exec_command,
+        .read_status    = ide_read_status,
+        .read_altstatus = ide_read_altstatus,
+        .set_irq        = ide_set_irq,
+
+        .tf_load        = at91_ide_tf_load,
+        .tf_read        = at91_ide_tf_read,
+
+        .input_data     = at91_ide_input_data,
+        .output_data    = at91_ide_output_data,
+};
+
+static const struct ide_port_ops at91_ide_port_ops = {
+        .set_pio_mode   = at91_ide_set_pio_mode,
+};
+
+static const struct ide_port_info at91_ide_port_info __initdata = {
+        .port_ops       = &at91_ide_port_ops,
+        .tp_ops         = &at91_ide_tp_ops,
+        .host_flags     = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA | IDE_HFLAG_SINGLE |
+                          IDE_HFLAG_NO_IO_32BIT | IDE_HFLAG_UNMASK_IRQS,
+        .pio_mask       = ATA_PIO5,
+};
+
+/*
+ * If interrupt is delivered through GPIO, IRQ are triggered on falling
+ * and rising edge of signal. Whereas IDE device request interrupt on high
+ * level (rising edge in our case). This mean we have fake interrupts, so
+ * we need to check interrupt pin and exit instantly from ISR when line
+ * is on low level.
+ */
+
+irqreturn_t at91_irq_handler(int irq, void *dev_id)
+{
+        int ntries = 8;
+        int pin_val1, pin_val2;
+
+        /* additional deglitch, line can be noisy in badly designed PCB */
+        do {
+                pin_val1 = at91_get_gpio_value(irq);
+                pin_val2 = at91_get_gpio_value(irq);
+        } while (pin_val1 != pin_val2 && --ntries > 0);
+
+        if (pin_val1 == 0 || ntries <= 0)
+                return IRQ_HANDLED;
+
+        return ide_intr(irq, dev_id);
+}
+
+static int __init at91_ide_probe(struct platform_device *pdev)
+{
+        int ret;
+        hw_regs_t hw;
+        hw_regs_t *hws[] = { &hw, NULL, NULL, NULL };
+        struct ide_host *host;
+        struct resource *res;
+        unsigned long tf_base = 0, ctl_base = 0;
+        struct at91_cf_data *board = pdev->dev.platform_data;
+
+        if (!board)
+                return -ENODEV;
+
+        if (board->det_pin && at91_get_gpio_value(board->det_pin) != 0) {
+                perr("no device detected\n");
+                return -ENODEV;
+        }
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!res) {
+                perr("can't get memory resource\n");
+                return -ENODEV;
+        }
+
+        if (!devm_request_mem_region(&pdev->dev, res->start + TASK_FILE,
+                                     REGS_SIZE, "ide") ||
+            !devm_request_mem_region(&pdev->dev, res->start + ALT_MODE,
+                                     REGS_SIZE, "alt")) {
+                perr("memory resources in use\n");
+                return -EBUSY;
+        }
+
+        pdbg("chipselect %u irq %u res %08lx\n", board->chipselect,
+             board->irq_pin, (unsigned long) res->start);
+
+        tf_base = (unsigned long) devm_ioremap(&pdev->dev, res->start + TASK_FILE,
+                                               REGS_SIZE);
+        ctl_base = (unsigned long) devm_ioremap(&pdev->dev, res->start + ALT_MODE,
+                                                REGS_SIZE);
+        if (!tf_base || !ctl_base) {
+                perr("can't map memory regions\n");
+                return -EBUSY;
+        }
+
+        memset(&hw, 0, sizeof(hw));
+
+        if (board->flags & AT91_IDE_SWAP_A0_A2) {
+                /* workaround for stupid hardware bug */
+                hw.io_ports.data_addr   = tf_base + 0;
+                hw.io_ports.error_addr  = tf_base + 4;
+                hw.io_ports.nsect_addr  = tf_base + 2;
+                hw.io_ports.lbal_addr   = tf_base + 6;
+                hw.io_ports.lbam_addr   = tf_base + 1;
+                hw.io_ports.lbah_addr   = tf_base + 5;
+                hw.io_ports.device_addr = tf_base + 3;
+                hw.io_ports.command_addr = tf_base + 7;
+                hw.io_ports.ctl_addr    = ctl_base + 3;
+        } else
+                ide_std_init_ports(&hw, tf_base, ctl_base + 6);
+
+        hw.irq = board->irq_pin;
+        hw.chipset = ide_generic;
+        hw.dev = &pdev->dev;
+
+        host = ide_host_alloc(&at91_ide_port_info, hws);
+        if (!host) {
+                perr("failed to allocate ide host\n");
+                return -ENOMEM;
+        }
+
+        /* setup Static Memory Controller - PIO 0 as default */
+        apply_timings(board->chipselect, 0, ide_timing_find_mode(XFER_PIO_0), 0);
+
+        /* with GPIO interrupt we have to do quirks in handler */
+        if (board->irq_pin >= PIN_BASE)
+                host->irq_handler = at91_irq_handler;
+
+        host->ports[0]->select_data = board->chipselect;
+
+        ret = ide_host_register(host, &at91_ide_port_info, hws);
+        if (ret) {
+                perr("failed to register ide host\n");
+                goto err_free_host;
+        }
+        platform_set_drvdata(pdev, host);
+        return 0;
+
+err_free_host:
+        ide_host_free(host);
+        return ret;
+}
+
+static int __exit at91_ide_remove(struct platform_device *pdev)
+{
+        struct ide_host *host = platform_get_drvdata(pdev);
+
+        ide_host_remove(host);
+        return 0;
+}
+
+static struct platform_driver at91_ide_driver = {
+        .driver = {
+                .name = DRV_NAME,
+                .owner = THIS_MODULE,
+        },
+        .remove = __exit_p(at91_ide_remove),
+};
+
+static int __init at91_ide_init(void)
+{
+        return platform_driver_probe(&at91_ide_driver, at91_ide_probe);
+}
+
+static void __exit at91_ide_exit(void)
+{
+        platform_driver_unregister(&at91_ide_driver);
+}
+
+module_init(at91_ide_init);
+module_exit(at91_ide_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Stanislaw Gruszka <stf_xl@wp.pl>");
+
diff --git a/drivers/ide/ide-disk_proc.c b/drivers/ide/ide-disk_proc.c
index 1146f4204c6e..1f86dcbd2b1c 100644
--- a/drivers/ide/ide-disk_proc.c
+++ b/drivers/ide/ide-disk_proc.c
@@ -125,5 +125,5 @@ const struct ide_proc_devset ide_disk_settings[] = {
         IDE_PROC_DEVSET(multcount,      0,    16),
         IDE_PROC_DEVSET(nowerr,         0,     1),
         IDE_PROC_DEVSET(wcache,         0,     1),
-        { 0 },
+        { NULL },
 };
diff --git a/drivers/ide/ide-floppy_proc.c b/drivers/ide/ide-floppy_proc.c
index 3ec762cb60ab..fcd4d8153df5 100644
--- a/drivers/ide/ide-floppy_proc.c
+++ b/drivers/ide/ide-floppy_proc.c
@@ -29,5 +29,5 @@ const struct ide_proc_devset ide_floppy_settings[] = {
         IDE_PROC_DEVSET(bios_head, 0,  255),
         IDE_PROC_DEVSET(bios_sect, 0,   63),
         IDE_PROC_DEVSET(ticks,     0,  255),
-        { 0 },
+        { NULL },
 };
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 9ee51adf567f..a9a6c208288a 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -908,7 +908,7 @@ void ide_timer_expiry (unsigned long data)
         ide_drive_t     *uninitialized_var(drive);
         ide_handler_t   *handler;
         unsigned long   flags;
-        unsigned long   wait = -1;
+        int             wait = -1;
         int             plug_device = 0;
 
         spin_lock_irqsave(&hwif->lock, flags);
@@ -1162,6 +1162,7 @@ out_early:
 
         return irq_ret;
 }
+EXPORT_SYMBOL_GPL(ide_intr);
 
 /**
  *      ide_do_drive_cmd        -       issue IDE special command
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index 753b92ebe0ae..b1892bd95c6f 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -315,6 +315,8 @@ void ide_output_data(ide_drive_t *drive, struct request *rq, void *buf,
         u8 io_32bit = drive->io_32bit;
         u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
 
+        len++;
+
         if (io_32bit) {
                 unsigned long uninitialized_var(flags);
 
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index ce0818a993f6..ee8e3e7cad51 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -950,6 +950,7 @@ static int ide_port_setup_devices(ide_hwif_t *hwif)
 static int init_irq (ide_hwif_t *hwif)
 {
         struct ide_io_ports *io_ports = &hwif->io_ports;
+        irq_handler_t irq_handler;
         int sa = 0;
 
         mutex_lock(&ide_cfg_mtx);
@@ -959,6 +960,10 @@ static int init_irq (ide_hwif_t *hwif)
         hwif->timer.function = &ide_timer_expiry;
         hwif->timer.data = (unsigned long)hwif;
 
+        irq_handler = hwif->host->irq_handler;
+        if (irq_handler == NULL)
+                irq_handler = ide_intr;
+
 #if defined(__mc68000__)
         sa = IRQF_SHARED;
 #endif /* __mc68000__ */
@@ -969,7 +974,7 @@ static int init_irq (ide_hwif_t *hwif)
         if (io_ports->ctl_addr)
                 hwif->tp_ops->set_irq(hwif, 1);
 
-        if (request_irq(hwif->irq, &ide_intr, sa, hwif->name, hwif))
+        if (request_irq(hwif->irq, irq_handler, sa, hwif->name, hwif))
                 goto out_up;
 
         if (!hwif->rqsize) {
diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index 1d8978b3314a..a7b9287ee0d4 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c
@@ -231,7 +231,7 @@ static const struct ide_proc_devset ide_generic_settings[] = {
         IDE_PROC_DEVSET(pio_mode, 0, 255),
         IDE_PROC_DEVSET(unmaskirq, 0, 1),
         IDE_PROC_DEVSET(using_dma, 0, 1),
-        { 0 },
+        { NULL },
 };
 
 static void proc_ide_settings_warn(void)
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index bb450a7608c2..4e6181c7bbda 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -2166,7 +2166,7 @@ static const struct ide_proc_devset idetape_settings[] = {
         __IDE_PROC_DEVSET(speed,        0, 0xffff, NULL, NULL),
         __IDE_PROC_DEVSET(tdsc,         IDETAPE_DSC_RW_MIN, IDETAPE_DSC_RW_MAX,
                                         mulf_tdsc, divf_tdsc),
-        { 0 },
+        { NULL },
 };
 #endif
 
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
index 9c50e6f1c236..34ce2703d29a 100644
--- a/drivers/mmc/core/mmc_ops.c
+++ b/drivers/mmc/core/mmc_ops.c
@@ -248,12 +248,15 @@ mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host,
 
         sg_init_one(&sg, data_buf, len);
 
-        /*
-         * The spec states that CSR and CID accesses have a timeout
-         * of 64 clock cycles.
-         */
-        data.timeout_ns = 0;
-        data.timeout_clks = 64;
+        if (opcode == MMC_SEND_CSD || opcode == MMC_SEND_CID) {
+                /*
+                 * The spec states that CSR and CID accesses have a timeout
+                 * of 64 clock cycles.
+                 */
+                data.timeout_ns = 0;
+                data.timeout_clks = 64;
+        } else
+                mmc_set_data_timeout(&data, card);
 
         mmc_wait_for_req(host, &mrq);
 
diff --git a/drivers/watchdog/gef_wdt.c b/drivers/watchdog/gef_wdt.c
index f0c2b7a1a175..734d9806a872 100644
--- a/drivers/watchdog/gef_wdt.c
+++ b/drivers/watchdog/gef_wdt.c
@@ -269,7 +269,7 @@ static int __devinit gef_wdt_probe(struct of_device *dev,
         bus_clk = 133; /* in MHz */
 
         freq = fsl_get_sys_freq();
-        if (freq > 0)
+        if (freq != -1)
                 bus_clk = freq;
 
         /* Map devices registers into memory */
diff --git a/drivers/watchdog/ks8695_wdt.c b/drivers/watchdog/ks8695_wdt.c
index 0b798fdaa378..74c92d384112 100644
--- a/drivers/watchdog/ks8695_wdt.c
+++ b/drivers/watchdog/ks8695_wdt.c
@@ -21,6 +21,7 @@
 #include <linux/watchdog.h>
 #include <linux/io.h>
 #include <linux/uaccess.h>
+#include <mach/timex.h>
 #include <mach/regs-timer.h>
 
 #define WDT_DEFAULT_TIME        5       /* seconds */
diff --git a/drivers/watchdog/orion5x_wdt.c b/drivers/watchdog/orion5x_wdt.c
index 14a339f58b6a..b64ae1a17832 100644
--- a/drivers/watchdog/orion5x_wdt.c
+++ b/drivers/watchdog/orion5x_wdt.c
@@ -29,6 +29,7 @@
 #define  WDT_EN                 0x0010
 #define WDT_VAL                 (TIMER_VIRT_BASE + 0x0024)
 
+#define ORION5X_TCLK            166666667
 #define WDT_MAX_DURATION        (0xffffffff / ORION5X_TCLK)
 #define WDT_IN_USE              0
 #define WDT_OK_TO_CLOSE         1
diff --git a/drivers/watchdog/rc32434_wdt.c b/drivers/watchdog/rc32434_wdt.c
index 57027f4653ce..f3553fa40b17 100644
--- a/drivers/watchdog/rc32434_wdt.c
+++ b/drivers/watchdog/rc32434_wdt.c
@@ -34,104 +34,89 @@
 #include <asm/time.h>
 #include <asm/mach-rc32434/integ.h>
 
-#define MAX_TIMEOUT                     20
-#define RC32434_WDT_INTERVAL            (15 * HZ)
-
-#define VERSION "0.2"
+#define VERSION "0.4"
 
 static struct {
-        struct completion stop;
-        int running;
-        struct timer_list timer;
-        int queue;
-        int default_ticks;
         unsigned long inuse;
 } rc32434_wdt_device;
 
 static struct integ __iomem *wdt_reg;
-static int ticks = 100 * HZ;
 
 static int expect_close;
-static int timeout;
+
+/* Board internal clock speed in Hz,
+ * the watchdog timer ticks at. */
+extern unsigned int idt_cpu_freq;
+
+/* translate wtcompare value to seconds and vice versa */
+#define WTCOMP2SEC(x)   (x / idt_cpu_freq)
+#define SEC2WTCOMP(x)   (x * idt_cpu_freq)
+
+/* Use a default timeout of 20s. This should be
+ * safe for CPU clock speeds up to 400MHz, as
+ * ((2 ^ 32) - 1) / (400MHz / 2) = 21s.  */
+#define WATCHDOG_TIMEOUT 20
+
+static int timeout = WATCHDOG_TIMEOUT;
 
 static int nowayout = WATCHDOG_NOWAYOUT;
 module_param(nowayout, int, 0);
 MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
         __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
 
+/* apply or and nand masks to data read from addr and write back */
+#define SET_BITS(addr, or, nand) \
+        writel((readl(&addr) | or) & ~nand, &addr)
 
 static void rc32434_wdt_start(void)
 {
-        u32 val;
-
-        if (!rc32434_wdt_device.inuse) {
-                writel(0, &wdt_reg->wtcount);
+        u32 or, nand;
 
-                val = RC32434_ERR_WRE;
-                writel(readl(&wdt_reg->errcs) | val, &wdt_reg->errcs);
+        /* zero the counter before enabling */
+        writel(0, &wdt_reg->wtcount);
 
-                val = RC32434_WTC_EN;
-                writel(readl(&wdt_reg->wtc) | val, &wdt_reg->wtc);
-        }
-        rc32434_wdt_device.running++;
-}
+        /* don't generate a non-maskable interrupt,
+         * do a warm reset instead */
+        nand = 1 << RC32434_ERR_WNE;
+        or = 1 << RC32434_ERR_WRE;
 
-static void rc32434_wdt_stop(void)
-{
-        u32 val;
+        /* reset the ERRCS timeout bit in case it's set */
+        nand |= 1 << RC32434_ERR_WTO;
 
-        if (rc32434_wdt_device.running) {
+        SET_BITS(wdt_reg->errcs, or, nand);
 
-                val = ~RC32434_WTC_EN;
-                writel(readl(&wdt_reg->wtc) & val, &wdt_reg->wtc);
+        /* reset WTC timeout bit and enable WDT */
+        nand = 1 << RC32434_WTC_TO;
+        or = 1 << RC32434_WTC_EN;
 
-                val = ~RC32434_ERR_WRE;
-                writel(readl(&wdt_reg->errcs) & val, &wdt_reg->errcs);
+        SET_BITS(wdt_reg->wtc, or, nand);
+}
 
-                rc32434_wdt_device.running = 0;
-        }
+static void rc32434_wdt_stop(void)
+{
+        /* Disable WDT */
+        SET_BITS(wdt_reg->wtc, 0, 1 << RC32434_WTC_EN);
 }
 
-static void rc32434_wdt_set(int new_timeout)
+static int rc32434_wdt_set(int new_timeout)
 {
-        u32 cmp = new_timeout * HZ;
-        u32 state, val;
+        int max_to = WTCOMP2SEC((u32)-1);
 
+        if (new_timeout < 0 || new_timeout > max_to) {
+                printk(KERN_ERR KBUILD_MODNAME
+                        ": timeout value must be between 0 and %d",
+                        max_to);
+                return -EINVAL;
+        }
         timeout = new_timeout;
-        /*
-         * store and disable WTC
-         */
-        state = (u32)(readl(&wdt_reg->wtc) & RC32434_WTC_EN);
-        val = ~RC32434_WTC_EN;
-        writel(readl(&wdt_reg->wtc) & val, &wdt_reg->wtc);
-
-        writel(0, &wdt_reg->wtcount);
-        writel(cmp, &wdt_reg->wtcompare);
-
-        /*
-         * restore WTC
-         */
-
-        writel(readl(&wdt_reg->wtc) | state, &wdt_reg);
-}
+        writel(SEC2WTCOMP(timeout), &wdt_reg->wtcompare);
 
-static void rc32434_wdt_reset(void)
-{
-        ticks = rc32434_wdt_device.default_ticks;
+        return 0;
 }
 
-static void rc32434_wdt_update(unsigned long unused)
+static void rc32434_wdt_ping(void)
 {
-        if (rc32434_wdt_device.running)
-                ticks--;
-
         writel(0, &wdt_reg->wtcount);
-
-        if (rc32434_wdt_device.queue && ticks)
-                mod_timer(&rc32434_wdt_device.timer,
-                        jiffies + RC32434_WDT_INTERVAL);
-        else
-                complete(&rc32434_wdt_device.stop);
 }
 
 static int rc32434_wdt_open(struct inode *inode, struct file *file)
@@ -142,19 +127,23 @@ static int rc32434_wdt_open(struct inode *inode, struct file *file)
         if (nowayout)
                 __module_get(THIS_MODULE);
 
+        rc32434_wdt_start();
+        rc32434_wdt_ping();
+
         return nonseekable_open(inode, file);
 }
 
 static int rc32434_wdt_release(struct inode *inode, struct file *file)
 {
-        if (expect_close && nowayout == 0) {
+        if (expect_close == 42) {
                 rc32434_wdt_stop();
                 printk(KERN_INFO KBUILD_MODNAME ": disabling watchdog timer\n");
                 module_put(THIS_MODULE);
-        } else
+        } else {
                 printk(KERN_CRIT KBUILD_MODNAME
                         ": device closed unexpectedly. WDT will not stop !\n");
-
+                rc32434_wdt_ping();
+        }
         clear_bit(0, &rc32434_wdt_device.inuse);
         return 0;
 }
@@ -174,10 +163,10 @@ static ssize_t rc32434_wdt_write(struct file *file, const char *data,
                                 if (get_user(c, data + i))
                                         return -EFAULT;
                                 if (c == 'V')
-                                        expect_close = 1;
+                                        expect_close = 42;
                         }
                 }
-                rc32434_wdt_update(0);
+                rc32434_wdt_ping();
                 return len;
         }
         return 0;
@@ -197,11 +186,11 @@ static long rc32434_wdt_ioctl(struct file *file, unsigned int cmd,
         };
         switch (cmd) {
         case WDIOC_KEEPALIVE:
-                rc32434_wdt_reset();
+                rc32434_wdt_ping();
                 break;
         case WDIOC_GETSTATUS:
         case WDIOC_GETBOOTSTATUS:
-                value = readl(&wdt_reg->wtcount);
+                value = 0;
                 if (copy_to_user(argp, &value, sizeof(int)))
                         return -EFAULT;
                 break;
@@ -218,6 +207,7 @@ static long rc32434_wdt_ioctl(struct file *file, unsigned int cmd,
                         break;
                 case WDIOS_DISABLECARD:
                         rc32434_wdt_stop();
+                        break;
                 default:
                         return -EINVAL;
                 }
@@ -225,11 +215,9 @@ static long rc32434_wdt_ioctl(struct file *file, unsigned int cmd,
         case WDIOC_SETTIMEOUT:
                 if (copy_from_user(&new_timeout, argp, sizeof(int)))
                         return -EFAULT;
-                if (new_timeout < 1)
+                if (rc32434_wdt_set(new_timeout))
                         return -EINVAL;
-                if (new_timeout > MAX_TIMEOUT)
-                        return -EINVAL;
-                rc32434_wdt_set(new_timeout);
+                /* Fall through */
         case WDIOC_GETTIMEOUT:
                 return copy_to_user(argp, &timeout, sizeof(int));
         default:
@@ -254,15 +242,15 @@ static struct miscdevice rc32434_wdt_miscdev = {
         .fops   = &rc32434_wdt_fops,
 };
 
-static char banner[] = KERN_INFO KBUILD_MODNAME
+static char banner[] __devinitdata = KERN_INFO KBUILD_MODNAME
                 ": Watchdog Timer version " VERSION ", timer margin: %d sec\n";
 
-static int rc32434_wdt_probe(struct platform_device *pdev)
+static int __devinit rc32434_wdt_probe(struct platform_device *pdev)
 {
         int ret;
         struct resource *r;
 
-        r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rb500_wdt_res");
+        r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rb532_wdt_res");
         if (!r) {
                 printk(KERN_ERR KBUILD_MODNAME
                         "failed to retrieve resources\n");
@@ -277,24 +265,12 @@ static int rc32434_wdt_probe(struct platform_device *pdev)
         }
 
         ret = misc_register(&rc32434_wdt_miscdev);
-
         if (ret < 0) {
                 printk(KERN_ERR KBUILD_MODNAME
                         "failed to register watchdog device\n");
                 goto unmap;
         }
 
-        init_completion(&rc32434_wdt_device.stop);
-        rc32434_wdt_device.queue = 0;
-
-        clear_bit(0, &rc32434_wdt_device.inuse);
-
-        setup_timer(&rc32434_wdt_device.timer, rc32434_wdt_update, 0L);
-
-        rc32434_wdt_device.default_ticks = ticks;
-
-        rc32434_wdt_start();
-
         printk(banner, timeout);
 
         return 0;
@@ -304,23 +280,17 @@ unmap:
         return ret;
 }
 
-static int rc32434_wdt_remove(struct platform_device *pdev)
+static int __devexit rc32434_wdt_remove(struct platform_device *pdev)
 {
-        if (rc32434_wdt_device.queue) {
-                rc32434_wdt_device.queue = 0;
-                wait_for_completion(&rc32434_wdt_device.stop);
-        }
         misc_deregister(&rc32434_wdt_miscdev);
-
         iounmap(wdt_reg);
-
         return 0;
 }
 
 static struct platform_driver rc32434_wdt = {
         .probe  = rc32434_wdt_probe,
-        .remove = rc32434_wdt_remove,
-        .driver = {
+        .remove = __devexit_p(rc32434_wdt_remove),
+        .driver = {
                 .name = "rc32434_wdt",
         }
 };