diff mbox

[v2,1/5] IB/hfi1: Export drivers user sw version via sysfs

Message ID 20160512171833.6198.80577.stgit@scvm10.sc.intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Dennis Dalessandro May 12, 2016, 5:18 p.m. UTC 
User space consumers of hfi1 will need to know what version of the
driver they are dealing with. This becomes particularly important when
the write() interface is removed. User's will need to be able to query
the driver information but without asking the driver directly.

Add the driver's software version to sysfs for this exact purpose.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mitko Haralanov <mitko.haralanov@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
---
 drivers/staging/rdma/hfi1/sysfs.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)


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diff mbox

Patch

diff --git a/drivers/staging/rdma/hfi1/sysfs.c b/drivers/staging/rdma/hfi1/sysfs.c
index 8cd6df8..2ff5a14 100644
--- a/drivers/staging/rdma/hfi1/sysfs.c
+++ b/drivers/staging/rdma/hfi1/sysfs.c
@@ -622,6 +622,12 @@  static ssize_t show_tempsense(struct device *device,
 	return ret;
 }
 
+static ssize_t show_user_sw_version(struct device *device,
+				    struct device_attribute *attr, char *buf)
+{
+	return scnprintf(buf, PAGE_SIZE, "0x%x\n", HFI1_USER_SWVERSION);
+}
+
 /*
  * end of per-unit (or driver, in some cases, but replicated
  * per unit) functions
@@ -636,6 +642,7 @@  static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL);
 static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL);
 static DEVICE_ATTR(tempsense, S_IRUGO, show_tempsense, NULL);
 static DEVICE_ATTR(chip_reset, S_IWUSR, NULL, store_chip_reset);
+static DEVICE_ATTR(user_sw_version, S_IRUGO, show_user_sw_version, NULL);
 
 static struct device_attribute *hfi1_attributes[] = {
 	&dev_attr_hw_rev,
@@ -646,6 +653,7 @@  static struct device_attribute *hfi1_attributes[] = {
 	&dev_attr_boardversion,
 	&dev_attr_tempsense,
 	&dev_attr_chip_reset,
+	&dev_attr_user_sw_version,
 };
 
 int hfi1_create_port_files(struct ib_device *ibdev, u8 port_num,