Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  libata: implement on-demand HPA unlocking
  libata: use the enlarged capacity after late HPA unlock
  SCSI: implement sd_unlock_native_capacity()
  libata-sff: trivial corrections to Kconfig help text
  sata_nv: don't diddle with nIEN on mcp55
  sata_via: magic vt6421 fix for transmission problems w/ WD drives

diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index 73f883333a0d821f8052319e489f585977d59821..aa85a98d3a4ff7da59a23d95fb7e361d4bcfa7b3 100644 (file)
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -168,10 +168,10 @@ config ATA_BMDMA
        default y
        help
          This option adds support for SFF ATA controllers with BMDMA
-         capability.  BMDMA stands for bus-master DMA and the
-         de-facto DMA interface for SFF controllers.
+         capability.  BMDMA stands for bus-master DMA and is the
+         de facto DMA interface for SFF controllers.
 
-         If unuser, say Y.
+         If unsure, say Y.
 
 if ATA_BMDMA
 

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 06b7e49e039c1e0a2e5b630fe92a1d5d33143b8a..ddf8e48627878999c17f686fcfb05dce669a2b9c 100644 (file)
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4119,9 +4119,8 @@ int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class,
            dev->n_sectors > n_sectors && dev->n_sectors == n_native_sectors) {
                ata_dev_printk(dev, KERN_WARNING,
                               "new n_sectors matches native, probably "
-                              "late HPA unlock, continuing\n");
-               /* keep using the old n_sectors */
-               dev->n_sectors = n_sectors;
+                              "late HPA unlock, n_sectors updated\n");
+               /* use the larger n_sectors */
                return 0;
        }
 
@@ -6669,6 +6668,7 @@ EXPORT_SYMBOL_GPL(ata_dummy_port_info);
 EXPORT_SYMBOL_GPL(ata_link_next);
 EXPORT_SYMBOL_GPL(ata_dev_next);
 EXPORT_SYMBOL_GPL(ata_std_bios_param);
+EXPORT_SYMBOL_GPL(ata_scsi_unlock_native_capacity);
 EXPORT_SYMBOL_GPL(ata_host_init);
 EXPORT_SYMBOL_GPL(ata_host_alloc);
 EXPORT_SYMBOL_GPL(ata_host_alloc_pinfo);

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index cfa9dd3d72530b8beabbaf272498ba843cb6e499..a54273d2c3c6a9f432ae60d49496335452ecc1d6 100644 (file)
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -414,6 +414,35 @@ int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev,
        return 0;
 }
 
+/**
+ *     ata_scsi_unlock_native_capacity - unlock native capacity
+ *     @sdev: SCSI device to adjust device capacity for
+ *
+ *     This function is called if a partition on @sdev extends beyond
+ *     the end of the device.  It requests EH to unlock HPA.
+ *
+ *     LOCKING:
+ *     Defined by the SCSI layer.  Might sleep.
+ */
+void ata_scsi_unlock_native_capacity(struct scsi_device *sdev)
+{
+       struct ata_port *ap = ata_shost_to_port(sdev->host);
+       struct ata_device *dev;
+       unsigned long flags;
+
+       spin_lock_irqsave(ap->lock, flags);
+
+       dev = ata_scsi_find_dev(ap, sdev);
+       if (dev && dev->n_sectors < dev->n_native_sectors) {
+               dev->flags |= ATA_DFLAG_UNLOCK_HPA;
+               dev->link->eh_info.action |= ATA_EH_RESET;
+               ata_port_schedule_eh(ap);
+       }
+
+       spin_unlock_irqrestore(ap->lock, flags);
+       ata_port_wait_eh(ap);
+}
+
 /**
  *     ata_get_identity - Handler for HDIO_GET_IDENTITY ioctl
  *     @ap: target port

diff --git a/drivers/ata/sata_nv.c b/drivers/ata/sata_nv.c
index 6fd1147841162272c493339284e8a2ab0b376291..21161136cad0c12d91608a79f429b4e296a67f8f 100644 (file)
--- a/drivers/ata/sata_nv.c
+++ b/drivers/ata/sata_nv.c
@@ -1669,7 +1669,6 @@ static void nv_mcp55_freeze(struct ata_port *ap)
        mask = readl(mmio_base + NV_INT_ENABLE_MCP55);
        mask &= ~(NV_INT_ALL_MCP55 << shift);
        writel(mask, mmio_base + NV_INT_ENABLE_MCP55);
-       ata_sff_freeze(ap);
 }
 
 static void nv_mcp55_thaw(struct ata_port *ap)
@@ -1683,7 +1682,6 @@ static void nv_mcp55_thaw(struct ata_port *ap)
        mask = readl(mmio_base + NV_INT_ENABLE_MCP55);
        mask |= (NV_INT_MASK_MCP55 << shift);
        writel(mask, mmio_base + NV_INT_ENABLE_MCP55);
-       ata_sff_thaw(ap);
 }
 
 static void nv_adma_error_handler(struct ata_port *ap)

diff --git a/drivers/ata/sata_via.c b/drivers/ata/sata_via.c
index 101d8c219cafede5f3eb3792cd31ab0d9d7fe9e3..0ecd0f6aa2c068865996588ceafab8c95d23ddb8 100644 (file)
--- a/drivers/ata/sata_via.c
+++ b/drivers/ata/sata_via.c
@@ -575,6 +575,19 @@ static void svia_configure(struct pci_dev *pdev)
                tmp8 |= NATIVE_MODE_ALL;
                pci_write_config_byte(pdev, SATA_NATIVE_MODE, tmp8);
        }
+
+       /*
+        * vt6421 has problems talking to some drives.  The following
+        * is the magic fix from Joseph Chan <JosephChan@via.com.tw>.
+        * Please add proper documentation if possible.
+        *
+        * https://bugzilla.kernel.org/show_bug.cgi?id=15173
+        */
+       if (pdev->device == 0x3249) {
+               pci_read_config_byte(pdev, 0x52, &tmp8);
+               tmp8 |= 1 << 2;
+               pci_write_config_byte(pdev, 0x52, tmp8);
+       }
 }
 
 static int svia_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 829cc37abc41a57ad45715524a81730b60b7d4ba..8802e48bc063408710792451e95cab70ce4b1a0e 100644 (file)
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -97,6 +97,7 @@ MODULE_ALIAS_SCSI_DEVICE(TYPE_RBC);
 #endif
 
 static int  sd_revalidate_disk(struct gendisk *);
+static void sd_unlock_native_capacity(struct gendisk *disk);
 static int  sd_probe(struct device *);
 static int  sd_remove(struct device *);
 static void sd_shutdown(struct device *);
@@ -1101,6 +1102,7 @@ static const struct block_device_operations sd_fops = {
 #endif
        .media_changed          = sd_media_changed,
        .revalidate_disk        = sd_revalidate_disk,
+       .unlock_native_capacity = sd_unlock_native_capacity,
 };
 
 static unsigned int sd_completed_bytes(struct scsi_cmnd *scmd)
@@ -2120,6 +2122,26 @@ static int sd_revalidate_disk(struct gendisk *disk)
        return 0;
 }
 
+/**
+ *     sd_unlock_native_capacity - unlock native capacity
+ *     @disk: struct gendisk to set capacity for
+ *
+ *     Block layer calls this function if it detects that partitions
+ *     on @disk reach beyond the end of the device.  If the SCSI host
+ *     implements ->unlock_native_capacity() method, it's invoked to
+ *     give it a chance to adjust the device capacity.
+ *
+ *     CONTEXT:
+ *     Defined by block layer.  Might sleep.
+ */
+static void sd_unlock_native_capacity(struct gendisk *disk)
+{
+       struct scsi_device *sdev = scsi_disk(disk)->device;
+
+       if (sdev->host->hostt->unlock_native_capacity)
+               sdev->host->hostt->unlock_native_capacity(sdev);
+}
+
 /**
  *     sd_format_disk_name - format disk name
  *     @prefix: name prefix - ie. "sd" for SCSI disks

diff --git a/include/linux/libata.h b/include/linux/libata.h
index 3bad2701bfa6349ff9ff8e0314f2b6cb3985e1f2..b85f3ff34d7d3d71cb99f0ded4db0ce186780b57 100644 (file)
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -1023,6 +1023,7 @@ extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd,
 extern int ata_std_bios_param(struct scsi_device *sdev,
                              struct block_device *bdev,
                              sector_t capacity, int geom[]);
+extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
 extern int ata_scsi_slave_config(struct scsi_device *sdev);
 extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
 extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
@@ -1174,6 +1175,7 @@ extern struct device_attribute *ata_common_sdev_attrs[];
        .slave_configure        = ata_scsi_slave_config,        \
        .slave_destroy          = ata_scsi_slave_destroy,       \
        .bios_param             = ata_std_bios_param,           \
+       .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
        .sdev_attrs             = ata_common_sdev_attrs
 
 #define ATA_NCQ_SHT(drv_name)                                  \

diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index c50a97fc76f9418ec1ce7ceddd4b8e140e9831ea..b7bdecb7b76efe6b11efe43063798c9887707f8b 100644 (file)
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -326,6 +326,14 @@ struct scsi_host_template {
        int (* bios_param)(struct scsi_device *, struct block_device *,
                        sector_t, int []);
 
+       /*
+        * This function is called when one or more partitions on the
+        * device reach beyond the end of the device.
+        *
+        * Status: OPTIONAL
+        */
+       void (*unlock_native_capacity)(struct scsi_device *);
+
        /*
         * Can be used to export driver statistics and other infos to the
         * world outside the kernel ie. userspace and it also provides an