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Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

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Pull libnvdimm fixes from Dan Williams:

 - a fix for the persistent memory 'struct page' driver.  The
   implementation overlooked the fact that pages are allocated in 2MB
   units leading to -ENOMEM when establishing some configurations.

   It's tagged for -stable as the problem was introduced with the
   initial implementation in 4.5.

 - The new "error status translation" routine, introduced with the 4.6
   updates to the nfit driver, missed a necessary path in
   acpi_nfit_ctl().

   The end result is that we are falsely assuming commands complete
   successfully when the embedded status says otherwise.

* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  nfit: fix translation of command status results
  libnvdimm, pfn: fix memmap reservation sizing
This commit is contained in:
Linus Torvalds 2016-05-05 18:10:01 -07:00
commit 7270a3f761
2 changed files with 14 additions and 4 deletions
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5
drivers/acpi/nfit.c
View file

@ -287,8 +287,11 @@ static int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc,
offset);
rc = -ENXIO;
}
} else
} else {
rc = 0;
if (cmd_rc)
*cmd_rc = xlat_status(buf, cmd);
}
out:
ACPI_FREE(out_obj);

13
drivers/nvdimm/pmem.c
View file

@ -397,10 +397,17 @@ static int nd_pfn_init(struct nd_pfn *nd_pfn)
*/
start += start_pad;
npfns = (pmem->size - start_pad - end_trunc - SZ_8K) / SZ_4K;
if (nd_pfn->mode == PFN_MODE_PMEM)
offset = ALIGN(start + SZ_8K + 64 * npfns, nd_pfn->align)
if (nd_pfn->mode == PFN_MODE_PMEM) {
unsigned long memmap_size;
/*
* vmemmap_populate_hugepages() allocates the memmap array in
* HPAGE_SIZE chunks.
*/
memmap_size = ALIGN(64 * npfns, HPAGE_SIZE);
offset = ALIGN(start + SZ_8K + memmap_size, nd_pfn->align)
- start;
else if (nd_pfn->mode == PFN_MODE_RAM)
} else if (nd_pfn->mode == PFN_MODE_RAM)
offset = ALIGN(start + SZ_8K, nd_pfn->align) - start;
else
goto err;