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author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-07-01 15:15:03 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-07-01 15:15:03 -0700 |
commit | f3683ccd12ac625cee12650ca8595c7b9cb16d77 (patch) | |
tree | f4e0d694e4a4da60b90b5b79950196684dd67923 /drivers/acpi | |
parent | 6e5c4f13a53d8b126f5636cb29b1c80d10d6838e (diff) | |
parent | 1bcbf42d2732b3fdaa8559b0dfc91567769e23c8 (diff) | |
download | op-kernel-dev-f3683ccd12ac625cee12650ca8595c7b9cb16d77.zip op-kernel-dev-f3683ccd12ac625cee12650ca8595c7b9cb16d77.tar.gz |
Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:
"1/ Two regression fixes since v4.6: one for the byte order of a sysfs
attribute (bz121161) and another for QEMU 2.6's NVDIMM _DSM (ACPI
Device Specific Method) implementation that gets tripped up by new
auto-probing behavior in the NFIT driver.
2/ A fix tagged for -stable that stops the kernel from
clobbering/ignoring changes to the configuration of a 'pfn'
instance ("struct page" driver). For example changing the
alignment from 2M to 1G may silently revert to 2M if that value is
currently stored on media.
3/ A fix from Eric for an xfstests failure in dax. It is not
currently tagged for -stable since it requires an 8-exabyte file
system to trigger, and there appear to be no user visible side
effects"
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
nfit: fix format interface code byte order
dax: fix offset overflow in dax_io
acpi, nfit: fix acpi_check_dsm() vs zero functions implemented
libnvdimm, pfn, dax: fix initialization vs autodetect for mode + alignment
Diffstat (limited to 'drivers/acpi')
-rw-r--r-- | drivers/acpi/nfit.c | 12 | ||||
-rw-r--r-- | drivers/acpi/nfit.h | 10 | ||||
-rw-r--r-- | drivers/acpi/utils.c | 6 |
3 files changed, 14 insertions, 14 deletions
diff --git a/drivers/acpi/nfit.c b/drivers/acpi/nfit.c index 2215fc8..ac6ddcc0 100644 --- a/drivers/acpi/nfit.c +++ b/drivers/acpi/nfit.c @@ -928,7 +928,7 @@ static ssize_t format_show(struct device *dev, { struct acpi_nfit_control_region *dcr = to_nfit_dcr(dev); - return sprintf(buf, "0x%04x\n", be16_to_cpu(dcr->code)); + return sprintf(buf, "0x%04x\n", le16_to_cpu(dcr->code)); } static DEVICE_ATTR_RO(format); @@ -961,8 +961,8 @@ static ssize_t format1_show(struct device *dev, continue; if (nfit_dcr->dcr->code == dcr->code) continue; - rc = sprintf(buf, "%#x\n", - be16_to_cpu(nfit_dcr->dcr->code)); + rc = sprintf(buf, "0x%04x\n", + le16_to_cpu(nfit_dcr->dcr->code)); break; } if (rc != ENXIO) @@ -1131,11 +1131,11 @@ static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc, /* * Until standardization materializes we need to consider up to 3 - * different command sets. Note, that checking for function0 (bit0) - * tells us if any commands are reachable through this uuid. + * different command sets. Note, that checking for zero functions + * tells us if any commands might be reachable through this uuid. */ for (i = NVDIMM_FAMILY_INTEL; i <= NVDIMM_FAMILY_HPE2; i++) - if (acpi_check_dsm(adev_dimm->handle, to_nfit_uuid(i), 1, 1)) + if (acpi_check_dsm(adev_dimm->handle, to_nfit_uuid(i), 1, 0)) break; /* limit the supported commands to those that are publicly documented */ diff --git a/drivers/acpi/nfit.h b/drivers/acpi/nfit.h index 11cb383..02b9ea1 100644 --- a/drivers/acpi/nfit.h +++ b/drivers/acpi/nfit.h @@ -53,12 +53,12 @@ enum nfit_uuids { }; /* - * Region format interface codes are stored as an array of bytes in the - * NFIT DIMM Control Region structure + * Region format interface codes are stored with the interface as the + * LSB and the function as the MSB. */ -#define NFIT_FIC_BYTE cpu_to_be16(0x101) /* byte-addressable energy backed */ -#define NFIT_FIC_BLK cpu_to_be16(0x201) /* block-addressable non-energy backed */ -#define NFIT_FIC_BYTEN cpu_to_be16(0x301) /* byte-addressable non-energy backed */ +#define NFIT_FIC_BYTE cpu_to_le16(0x101) /* byte-addressable energy backed */ +#define NFIT_FIC_BLK cpu_to_le16(0x201) /* block-addressable non-energy backed */ +#define NFIT_FIC_BYTEN cpu_to_le16(0x301) /* byte-addressable non-energy backed */ enum { NFIT_BLK_READ_FLUSH = 1, diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 22c0995..b4de130 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -680,9 +680,6 @@ bool acpi_check_dsm(acpi_handle handle, const u8 *uuid, u64 rev, u64 funcs) u64 mask = 0; union acpi_object *obj; - if (funcs == 0) - return false; - obj = acpi_evaluate_dsm(handle, uuid, rev, 0, NULL); if (!obj) return false; @@ -695,6 +692,9 @@ bool acpi_check_dsm(acpi_handle handle, const u8 *uuid, u64 rev, u64 funcs) mask |= (((u64)obj->buffer.pointer[i]) << (i * 8)); ACPI_FREE(obj); + if (funcs == 0) + return true; + /* * Bit 0 indicates whether there's support for any functions other than * function 0 for the specified UUID and revision. |