Merge tag 'powerpc-4.9-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...

[cascardo/linux.git] / drivers / nvdimm / pmem.c

diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index 42b3a82..2461843 100644 (file)
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -47,7 +47,7 @@ static struct nd_region *to_region(struct pmem_device *pmem)
        return to_nd_region(to_dev(pmem)->parent);
 }
 
-static void pmem_clear_poison(struct pmem_device *pmem, phys_addr_t offset,
+static int pmem_clear_poison(struct pmem_device *pmem, phys_addr_t offset,
                unsigned int len)
 {
        struct device *dev = to_dev(pmem);
@@ -62,8 +62,12 @@ static void pmem_clear_poison(struct pmem_device *pmem, phys_addr_t offset,
                                __func__, (unsigned long long) sector,
                                cleared / 512, cleared / 512 > 1 ? "s" : "");
                badblocks_clear(&pmem->bb, sector, cleared / 512);
+       } else {
+               return -EIO;
        }
+
        invalidate_pmem(pmem->virt_addr + offset, len);
+       return 0;
 }
 
 static void write_pmem(void *pmem_addr, struct page *page,
@@ -123,7 +127,7 @@ static int pmem_do_bvec(struct pmem_device *pmem, struct page *page,
                flush_dcache_page(page);
                write_pmem(pmem_addr, page, off, len);
                if (unlikely(bad_pmem)) {
-                       pmem_clear_poison(pmem, pmem_off, len);
+                       rc = pmem_clear_poison(pmem, pmem_off, len);
                        write_pmem(pmem_addr, page, off, len);
                }
        }