summaryrefslogtreecommitdiff
path: root/drivers/acpi
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2015-08-26 03:26:00 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-08-26 03:26:00 +0300
commitf045fd755fe9ba2b15265cd237d6ae5d924689d3 (patch)
tree8caf75fd898a67bfb6af019a96f96a800f21d1c9 /drivers/acpi
parentb1713b135fb1ae4d52531a55f0687f985bffe271 (diff)
parentde4a196c02a2a2631b516d90da6e8d052ccb07e8 (diff)
downloadlinux-f045fd755fe9ba2b15265cd237d6ae5d924689d3.tar.xz
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
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/nfit.c4
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,