diff options
Diffstat (limited to 'drivers/nvdimm/claim.c')
| -rw-r--r-- | drivers/nvdimm/claim.c | 43 |
1 files changed, 14 insertions, 29 deletions
diff --git a/drivers/nvdimm/claim.c b/drivers/nvdimm/claim.c index 45964acba944..309cd2cddb0e 100644 --- a/drivers/nvdimm/claim.c +++ b/drivers/nvdimm/claim.c @@ -4,6 +4,7 @@ */ #include <linux/device.h> #include <linux/sizes.h> +#include <linux/badblocks.h> #include "nd-core.h" #include "pmem.h" #include "pfn.h" @@ -33,11 +34,10 @@ void nd_detach_ndns(struct device *dev, if (!ndns) return; - get_device(&ndns->dev); - nvdimm_bus_lock(&ndns->dev); + + struct device *ndev __free(put_device) = get_device(&ndns->dev); + guard(nvdimm_bus)(ndev); __nd_detach_ndns(dev, _ndns); - nvdimm_bus_unlock(&ndns->dev); - put_device(&ndns->dev); } bool __nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach, @@ -55,24 +55,6 @@ bool __nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach, return true; } -bool nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach, - struct nd_namespace_common **_ndns) -{ - bool claimed; - - nvdimm_bus_lock(&attach->dev); - claimed = __nd_attach_ndns(dev, attach, _ndns); - nvdimm_bus_unlock(&attach->dev); - return claimed; -} - -static int namespace_match(struct device *dev, void *data) -{ - char *name = data; - - return strcmp(name, dev_name(dev)) == 0; -} - static bool is_idle(struct device *dev, struct nd_namespace_common *ndns) { struct nd_region *nd_region = to_nd_region(dev->parent); @@ -167,7 +149,7 @@ ssize_t nd_namespace_store(struct device *dev, goto out; } - found = device_find_child(dev->parent, name, namespace_match); + found = device_find_child_by_name(dev->parent, name); if (!found) { dev_dbg(dev, "'%s' not found under %s\n", name, dev_name(dev->parent)); @@ -268,7 +250,7 @@ static int nsio_rw_bytes(struct nd_namespace_common *ndns, if (rw == READ) { if (unlikely(is_bad_pmem(&nsio->bb, sector, sz_align))) return -EIO; - if (memcpy_mcsafe(buf, nsio->addr + offset, size) != 0) + if (copy_mc_to_kernel(buf, nsio->addr + offset, size) != 0) return -EIO; return 0; } @@ -303,13 +285,16 @@ static int nsio_rw_bytes(struct nd_namespace_common *ndns, int devm_nsio_enable(struct device *dev, struct nd_namespace_io *nsio, resource_size_t size) { - struct resource *res = &nsio->res; struct nd_namespace_common *ndns = &nsio->common; + struct range range = { + .start = nsio->res.start, + .end = nsio->res.end, + }; nsio->size = size; - if (!devm_request_mem_region(dev, res->start, size, + if (!devm_request_mem_region(dev, range.start, size, dev_name(&ndns->dev))) { - dev_warn(dev, "could not reserve region %pR\n", res); + dev_warn(dev, "could not reserve region %pR\n", &nsio->res); return -EBUSY; } @@ -317,9 +302,9 @@ int devm_nsio_enable(struct device *dev, struct nd_namespace_io *nsio, if (devm_init_badblocks(dev, &nsio->bb)) return -ENOMEM; nvdimm_badblocks_populate(to_nd_region(ndns->dev.parent), &nsio->bb, - &nsio->res); + &range); - nsio->addr = devm_memremap(dev, res->start, size, ARCH_MEMREMAP_PMEM); + nsio->addr = devm_memremap(dev, range.start, size, ARCH_MEMREMAP_PMEM); return PTR_ERR_OR_ZERO(nsio->addr); } |