From: Dan Williams <dan.j.williams@intel.com>
Date: Mon, 24 Jan 2022 00:29:26 +0000 (-0800)
Subject: cxl/decoder: Hide physical address information from non-root
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=c3bca8d4bb3ff77b8784cdc794eb1f8f89b10fb5;p=linux.git

cxl/decoder: Hide physical address information from non-root

Just like /proc/iomem, CXL physical address information is reserved for
root only.

Reviewed-by: Ben Widawsky <ben.widawsky@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/164298416650.3018233.450720006145238709.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---

diff --git a/drivers/cxl/core/port.c b/drivers/cxl/core/port.c
index 3f9b98ecd18b7..c5e74c6f04e89 100644
--- a/drivers/cxl/core/port.c
+++ b/drivers/cxl/core/port.c
@@ -49,7 +49,7 @@ static ssize_t start_show(struct device *dev, struct device_attribute *attr,
 
 	return sysfs_emit(buf, "%#llx\n", cxld->range.start);
 }
-static DEVICE_ATTR_RO(start);
+static DEVICE_ATTR_ADMIN_RO(start);
 
 static ssize_t size_show(struct device *dev, struct device_attribute *attr,
 			char *buf)