[PATCH v4 4/6] acpi, nfit: Show bus_dsm_mask in sysfs

From: Jerry Hoemann <jerry.hoemann@hpe.com>
To: dan.j.williams@intel.com
Cc: linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org
Subject: [PATCH v4 4/6] acpi, nfit: Show bus_dsm_mask in sysfs
Date: Fri, 30 Jun 2017 10:09:37 -0600	[thread overview]
Message-ID: <198c0eaf15bda1fb48dea29ccee1b437206c1635.1498810220.git.jerry.hoemann@hpe.com> (raw)
In-Reply-To: <cover.1498810220.git.jerry.hoemann@hpe.com>
In-Reply-To: <cover.1498810220.git.jerry.hoemann@hpe.com>

Display bus_dsm_mask in sysfs as /sys/bus/nd/devices/ndbusX/nfit/dsm_mask.

Signed-off-by: Jerry Hoemann <jerry.hoemann@hpe.com>
---
 drivers/acpi/nfit/core.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 5e4c137..4e24d69 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -929,6 +929,17 @@ static int nfit_mem_init(struct acpi_nfit_desc *acpi_desc)
 	return 0;
 }
 
+static ssize_t bus_dsm_mask_show(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	struct nvdimm_bus *nvdimm_bus = to_nvdimm_bus(dev);
+	struct nvdimm_bus_descriptor *nd_desc = to_nd_desc(nvdimm_bus);
+
+	return sprintf(buf, "%#lx\n", nd_desc->bus_dsm_mask);
+}
+static struct device_attribute dev_attr_bus_dsm_mask =
+		__ATTR(dsm_mask, 0444, bus_dsm_mask_show, NULL);
+
 static ssize_t revision_show(struct device *dev,
 		struct device_attribute *attr, char *buf)
 {
@@ -1065,6 +1076,7 @@ static umode_t nfit_visible(struct kobject *kobj, struct attribute *a, int n)
 	&dev_attr_revision.attr,
 	&dev_attr_scrub.attr,
 	&dev_attr_hw_error_scrub.attr,
+	&dev_attr_bus_dsm_mask.attr,
 	NULL,
 };
 
-- 
1.8.5.6

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