diff options
Diffstat (limited to 'drivers/ata/libata-transport.c')
| -rw-r--r-- | drivers/ata/libata-transport.c | 71 |
1 files changed, 56 insertions, 15 deletions
diff --git a/drivers/ata/libata-transport.c b/drivers/ata/libata-transport.c index 34bb4608bdc6..e4fb9d1b9b39 100644 --- a/drivers/ata/libata-transport.c +++ b/drivers/ata/libata-transport.c @@ -9,7 +9,7 @@ * and various sysfs attributes to expose these topologies and management * interfaces to user-space. * - * There are 3 objects defined in in this class: + * There are 3 objects defined in this class: * - ata_port * - ata_link * - ata_device @@ -163,7 +163,7 @@ static struct { { AC_ERR_INVALID, "InvalidArg" }, { AC_ERR_OTHER, "Unknown" }, { AC_ERR_NODEV_HINT, "NoDeviceHint" }, - { AC_ERR_NCQ, "NCQError" } + { AC_ERR_NCQ, "NCQError" } }; ata_bitfield_name_match(err, ata_err_names) @@ -196,7 +196,7 @@ static struct { { XFER_PIO_0, "XFER_PIO_0" }, { XFER_PIO_SLOW, "XFER_PIO_SLOW" } }; -ata_bitfield_name_match(xfer,ata_xfer_names) +ata_bitfield_name_search(xfer, ata_xfer_names) /* * ATA Port attributes @@ -301,7 +301,9 @@ int ata_tport_add(struct device *parent, pm_runtime_enable(dev); pm_runtime_forbid(dev); - transport_add_device(dev); + error = transport_add_device(dev); + if (error) + goto tport_transport_add_err; transport_configure_device(dev); error = ata_tlink_add(&ap->link); @@ -312,22 +314,52 @@ int ata_tport_add(struct device *parent, tport_link_err: transport_remove_device(dev); + tport_transport_add_err: device_del(dev); tport_err: transport_destroy_device(dev); put_device(dev); - ata_host_put(ap->host); return error; } +/** + * ata_port_classify - determine device type based on ATA-spec signature + * @ap: ATA port device on which the classification should be run + * @tf: ATA taskfile register set for device to be identified + * + * A wrapper around ata_dev_classify() to provide additional logging + * + * RETURNS: + * Device type, %ATA_DEV_ATA, %ATA_DEV_ATAPI, %ATA_DEV_PMP, + * %ATA_DEV_ZAC, or %ATA_DEV_UNKNOWN the event of failure. + */ +unsigned int ata_port_classify(struct ata_port *ap, + const struct ata_taskfile *tf) +{ + int i; + unsigned int class = ata_dev_classify(tf); + + /* Start with index '1' to skip the 'unknown' entry */ + for (i = 1; i < ARRAY_SIZE(ata_class_names); i++) { + if (ata_class_names[i].value == class) { + ata_port_dbg(ap, "found %s device by sig\n", + ata_class_names[i].name); + return class; + } + } + + ata_port_info(ap, "found unknown device (class %u)\n", class); + return class; +} +EXPORT_SYMBOL_GPL(ata_port_classify); /* * ATA link attributes */ static int noop(int x) { return x; } -#define ata_link_show_linkspeed(field, format) \ +#define ata_link_show_linkspeed(field, format) \ static ssize_t \ show_ata_link_##field(struct device *dev, \ struct device_attribute *attr, char *buf) \ @@ -416,7 +448,7 @@ int ata_tlink_add(struct ata_link *link) dev->release = ata_tlink_release; if (ata_is_host_link(link)) dev_set_name(dev, "link%d", ap->print_id); - else + else dev_set_name(dev, "link%d.%d", ap->print_id, link->pmp); transport_setup_device(dev); @@ -426,7 +458,9 @@ int ata_tlink_add(struct ata_link *link) goto tlink_err; } - transport_add_device(dev); + error = transport_add_device(dev); + if (error) + goto tlink_transport_err; transport_configure_device(dev); ata_for_each_dev(ata_dev, link, ALL) { @@ -441,6 +475,7 @@ int ata_tlink_add(struct ata_link *link) ata_tdev_delete(ata_dev); } transport_remove_device(dev); + tlink_transport_err: device_del(dev); tlink_err: transport_destroy_device(dev); @@ -472,7 +507,7 @@ ata_dev_attr(xfer, dma_mode); ata_dev_attr(xfer, xfer_mode); -#define ata_dev_show_simple(field, format_string, cast) \ +#define ata_dev_show_simple(field, format_string, cast) \ static ssize_t \ show_ata_dev_##field(struct device *dev, \ struct device_attribute *attr, char *buf) \ @@ -482,9 +517,9 @@ show_ata_dev_##field(struct device *dev, \ return scnprintf(buf, 20, format_string, cast ata_dev->field); \ } -#define ata_dev_simple_attr(field, format_string, type) \ +#define ata_dev_simple_attr(field, format_string, type) \ ata_dev_show_simple(field, format_string, (type)) \ -static DEVICE_ATTR(field, S_IRUGO, \ + static DEVICE_ATTR(field, S_IRUGO, \ show_ata_dev_##field, NULL) ata_dev_simple_attr(spdn_cnt, "%d\n", int); @@ -502,7 +537,7 @@ static int ata_show_ering(struct ata_ering_entry *ent, void *void_arg) seconds = div_u64_rem(ent->timestamp, HZ, &rem); arg->written += sprintf(arg->buf + arg->written, - "[%5llu.%09lu]", seconds, + "[%5llu.%09lu]", seconds, rem * NSEC_PER_SEC / HZ); arg->written += get_ata_err_names(ent->err_mask, arg->buf + arg->written); @@ -667,7 +702,7 @@ static int ata_tdev_add(struct ata_device *ata_dev) dev->release = ata_tdev_release; if (ata_is_host_link(link)) dev_set_name(dev, "dev%d.%d", ap->print_id,ata_dev->devno); - else + else dev_set_name(dev, "dev%d.%d.0", ap->print_id, link->pmp); transport_setup_device(dev); @@ -678,7 +713,13 @@ static int ata_tdev_add(struct ata_device *ata_dev) return error; } - transport_add_device(dev); + error = transport_add_device(dev); + if (error) { + device_del(dev); + ata_tdev_free(ata_dev); + return error; + } + transport_configure_device(dev); return 0; } @@ -689,7 +730,7 @@ static int ata_tdev_add(struct ata_device *ata_dev) */ #define SETUP_TEMPLATE(attrb, field, perm, test) \ - i->private_##attrb[count] = dev_attr_##field; \ + i->private_##attrb[count] = dev_attr_##field; \ i->private_##attrb[count].attr.mode = perm; \ i->attrb[count] = &i->private_##attrb[count]; \ if (test) \ |