diff options
Diffstat (limited to 'drivers/cxl/core/port.c')
| -rw-r--r-- | drivers/cxl/core/port.c | 29 |
1 files changed, 10 insertions, 19 deletions
diff --git a/drivers/cxl/core/port.c b/drivers/cxl/core/port.c index eb46c6764d20..29197376b18e 100644 --- a/drivers/cxl/core/port.c +++ b/drivers/cxl/core/port.c @@ -30,18 +30,12 @@ * instantiated by the core. */ -/* - * All changes to the interleave configuration occur with this lock held - * for write. - */ -DECLARE_RWSEM(cxl_region_rwsem); - static DEFINE_IDA(cxl_port_ida); static DEFINE_XARRAY(cxl_root_buses); int cxl_num_decoders_committed(struct cxl_port *port) { - lockdep_assert_held(&cxl_region_rwsem); + lockdep_assert_held(&cxl_rwsem.region); return port->commit_end + 1; } @@ -176,7 +170,7 @@ static ssize_t target_list_show(struct device *dev, ssize_t offset; int rc; - guard(rwsem_read)(&cxl_region_rwsem); + guard(rwsem_read)(&cxl_rwsem.region); rc = emit_target_list(cxlsd, buf); if (rc < 0) return rc; @@ -196,7 +190,7 @@ static ssize_t mode_show(struct device *dev, struct device_attribute *attr, struct cxl_endpoint_decoder *cxled = to_cxl_endpoint_decoder(dev); struct cxl_memdev *cxlmd = cxled_to_memdev(cxled); struct cxl_dev_state *cxlds = cxlmd->cxlds; - /* without @cxl_dpa_rwsem, make sure @part is not reloaded */ + /* without @cxl_rwsem.dpa, make sure @part is not reloaded */ int part = READ_ONCE(cxled->part); const char *desc; @@ -235,7 +229,7 @@ static ssize_t dpa_resource_show(struct device *dev, struct device_attribute *at { struct cxl_endpoint_decoder *cxled = to_cxl_endpoint_decoder(dev); - guard(rwsem_read)(&cxl_dpa_rwsem); + guard(rwsem_read)(&cxl_rwsem.dpa); return sysfs_emit(buf, "%#llx\n", (u64)cxl_dpa_resource_start(cxled)); } static DEVICE_ATTR_RO(dpa_resource); @@ -560,7 +554,7 @@ static ssize_t decoders_committed_show(struct device *dev, { struct cxl_port *port = to_cxl_port(dev); - guard(rwsem_read)(&cxl_region_rwsem); + guard(rwsem_read)(&cxl_rwsem.region); return sysfs_emit(buf, "%d\n", cxl_num_decoders_committed(port)); } @@ -1722,7 +1716,7 @@ static int decoder_populate_targets(struct cxl_switch_decoder *cxlsd, if (xa_empty(&port->dports)) return -EINVAL; - guard(rwsem_write)(&cxl_region_rwsem); + guard(rwsem_write)(&cxl_rwsem.region); for (i = 0; i < cxlsd->cxld.interleave_ways; i++) { struct cxl_dport *dport = find_dport(port, target_map[i]); @@ -2001,12 +1995,9 @@ EXPORT_SYMBOL_NS_GPL(cxl_decoder_add, "CXL"); static void cxld_unregister(void *dev) { - struct cxl_endpoint_decoder *cxled; - - if (is_endpoint_decoder(dev)) { - cxled = to_cxl_endpoint_decoder(dev); - cxl_decoder_kill_region(cxled); - } + if (is_endpoint_decoder(dev)) + cxl_decoder_detach(NULL, to_cxl_endpoint_decoder(dev), -1, + DETACH_INVALIDATE); device_unregister(dev); } @@ -2293,7 +2284,7 @@ static const struct attribute_group *cxl_bus_attribute_groups[] = { NULL, }; -struct bus_type cxl_bus_type = { +const struct bus_type cxl_bus_type = { .name = "cxl", .uevent = cxl_bus_uevent, .match = cxl_bus_match, |