Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932730AbcDNPlr (ORCPT ); Thu, 14 Apr 2016 11:41:47 -0400 Received: from mga09.intel.com ([134.134.136.24]:40348 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932214AbcDNPlp (ORCPT ); Thu, 14 Apr 2016 11:41:45 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.24,485,1455004800"; d="scan'208";a="932501134" Subject: [PATCH 1/7] IB/hfi1: Export drivers user sw version via sysfs To: dledford@redhat.com From: Dennis Dalessandro Cc: linux-rdma@vger.kernel.org, Ira Weiny , Mitko Haralanov , linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk, linux-fsdevel@vger.kernel.org, torvalds@linux-foundation.org Date: Thu, 14 Apr 2016 08:41:41 -0700 Message-ID: <20160414154140.6387.47005.stgit@scvm10.sc.intel.com> In-Reply-To: <20160414153727.6387.96381.stgit@scvm10.sc.intel.com> References: <20160414153727.6387.96381.stgit@scvm10.sc.intel.com> User-Agent: StGit/0.16 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1850 Lines: 47 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: Mitko Haralanov Reviewed-by: Ira Weiny Signed-off-by: Dennis Dalessandro --- drivers/staging/rdma/hfi1/sysfs.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) 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,