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| author |   Ross Zwisler <ross.zwisler@linux.intel.com> | 2015-08-20 16:27:38 -0600 |
|---|---|---|
| committer |   Dan Williams <dan.j.williams@intel.com> | 2015-08-25 19:42:01 -0400 |
| commit | de4a196c02a2a2631b516d90da6e8d052ccb07e8 (patch) | |
| tree | fe8c8914874372404e49d1f7c927fa66e8516087 /drivers/acpi | |
| parent | Linux 4.2-rc4 (diff) | |
| download | linux-dev-de4a196c02a2a2631b516d90da6e8d052ccb07e8.tar.xz linux-dev-de4a196c02a2a2631b516d90da6e8d052ccb07e8.zip | |
nfit, nd_blk: BLK status register is only 32 bits
Only read 32 bits for the BLK status register in read_blk_stat().
The format and size of this register is defined in the
"NVDIMM Driver Writer's guide":
http://pmem.io/documents/NVDIMM_Driver_Writers_Guide.pdf
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reported-by: Nicholas Moulin <nicholas.w.moulin@linux.intel.com>
Tested-by: Nicholas Moulin <nicholas.w.moulin@linux.intel.com>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/nfit.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/acpi/nfit.c b/drivers/acpi/nfit.c index 628a42c41ab1..bb29e56276bd 100644 --- a/drivers/acpi/nfit.c +++ b/drivers/acpi/nfit.c @@ -1024,7 +1024,7 @@ static void wmb_blk(struct nfit_blk *nfit_blk) wmb_pmem(); } -static u64 read_blk_stat(struct nfit_blk *nfit_blk, unsigned int bw) +static u32 read_blk_stat(struct nfit_blk *nfit_blk, unsigned int bw) { struct nfit_blk_mmio *mmio = &nfit_blk->mmio[DCR]; u64 offset = nfit_blk->stat_offset + mmio->size * bw; @@ -1032,7 +1032,7 @@ static u64 read_blk_stat(struct nfit_blk *nfit_blk, unsigned int bw) if (mmio->num_lines) offset = to_interleave_offset(offset, mmio); - return readq(mmio->base + offset); + return readl(mmio->base + offset); } static void write_blk_ctl(struct nfit_blk *nfit_blk, unsigned int bw, |