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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-08-26 02:26:00 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-08-26 02:26:00 +0200 |
| commit | f045fd755fe9ba2b15265cd237d6ae5d924689d3 (patch) | |
| tree | 8caf75fd898a67bfb6af019a96f96a800f21d1c9 | |
| parent | Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/ker... (diff) | |
| parent | nfit, nd_blk: BLK status register is only 32 bits (diff) | |
| download | linux-f045fd755fe9ba2b15265cd237d6ae5d924689d3.tar.xz linux-f045fd755fe9ba2b15265cd237d6ae5d924689d3.zip | |
Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull nvdimm fix from Dan Williams:
"A single fix for status register read size in the nd_blk driver.
The effect of getting the width of this register read wrong is that
all I/O fails when the read returns non-zero. Given the availability
of ACPI 6 NFIT enabled platforms, this could reasonably wait to come
in during the 4.3 merge window with a tag for 4.2-stable. Otherwise,
this makes the 4.2 kernel fully functional with devices that conform
to the mmio-block-apertures defined in the ACPI 6 NFIT (NVDIMM
Firmware Interface Table)"
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
nfit, nd_blk: BLK status register is only 32 bits
| -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, |