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Date:   Tue, 15 Dec 2020 23:19:26 -0800
From:   Stephen Boyd <swboyd@...omium.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>,
        Douglas Anderson <dianders@...omium.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Subject: [PATCH] soc: qcom: socinfo: Open read access to all for debugfs

There doesn't seem to be any reason to limit this to only root user
readable. Let's make it readable by all so that random programs can
read the debugfs files in here instead of just root. The information is
just that, informational, so this is fine.

Cc: Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
Cc: Douglas Anderson <dianders@...omium.org>
Cc: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Stephen Boyd <swboyd@...omium.org>
---
 drivers/soc/qcom/socinfo.c | 40 +++++++++++++++++++-------------------
 1 file changed, 20 insertions(+), 20 deletions(-)

diff --git a/drivers/soc/qcom/socinfo.c b/drivers/soc/qcom/socinfo.c
index b44ede48decc..4e4946d9e4ab 100644
--- a/drivers/soc/qcom/socinfo.c
+++ b/drivers/soc/qcom/socinfo.c
@@ -258,7 +258,7 @@ static const struct file_operations qcom_ ##name## _ops = {		\
 }
 
 #define DEBUGFS_ADD(info, name)						\
-	debugfs_create_file(__stringify(name), 0400,			\
+	debugfs_create_file(__stringify(name), 0444,			\
 			    qcom_socinfo->dbg_root,			\
 			    info, &qcom_ ##name## _ops)
 
@@ -349,14 +349,14 @@ static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
 
 	qcom_socinfo->info.fmt = __le32_to_cpu(info->fmt);
 
-	debugfs_create_x32("info_fmt", 0400, qcom_socinfo->dbg_root,
+	debugfs_create_x32("info_fmt", 0444, qcom_socinfo->dbg_root,
 			   &qcom_socinfo->info.fmt);
 
 	switch (qcom_socinfo->info.fmt) {
 	case SOCINFO_VERSION(0, 15):
 		qcom_socinfo->info.nmodem_supported = __le32_to_cpu(info->nmodem_supported);
 
-		debugfs_create_u32("nmodem_supported", 0400, qcom_socinfo->dbg_root,
+		debugfs_create_u32("nmodem_supported", 0444, qcom_socinfo->dbg_root,
 				   &qcom_socinfo->info.nmodem_supported);
 		fallthrough;
 	case SOCINFO_VERSION(0, 14):
@@ -365,19 +365,19 @@ static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
 		qcom_socinfo->info.num_defective_parts = __le32_to_cpu(info->num_defective_parts);
 		qcom_socinfo->info.ndefective_parts_array_offset = __le32_to_cpu(info->ndefective_parts_array_offset);
 
-		debugfs_create_u32("num_clusters", 0400, qcom_socinfo->dbg_root,
+		debugfs_create_u32("num_clusters", 0444, qcom_socinfo->dbg_root,
 				   &qcom_socinfo->info.num_clusters);
-		debugfs_create_u32("ncluster_array_offset", 0400, qcom_socinfo->dbg_root,
+		debugfs_create_u32("ncluster_array_offset", 0444, qcom_socinfo->dbg_root,
 				   &qcom_socinfo->info.ncluster_array_offset);
-		debugfs_create_u32("num_defective_parts", 0400, qcom_socinfo->dbg_root,
+		debugfs_create_u32("num_defective_parts", 0444, qcom_socinfo->dbg_root,
 				   &qcom_socinfo->info.num_defective_parts);
-		debugfs_create_u32("ndefective_parts_array_offset", 0400, qcom_socinfo->dbg_root,
+		debugfs_create_u32("ndefective_parts_array_offset", 0444, qcom_socinfo->dbg_root,
 				   &qcom_socinfo->info.ndefective_parts_array_offset);
 		fallthrough;
 	case SOCINFO_VERSION(0, 13):
 		qcom_socinfo->info.nproduct_id = __le32_to_cpu(info->nproduct_id);
 
-		debugfs_create_u32("nproduct_id", 0400, qcom_socinfo->dbg_root,
+		debugfs_create_u32("nproduct_id", 0444, qcom_socinfo->dbg_root,
 				   &qcom_socinfo->info.nproduct_id);
 		DEBUGFS_ADD(info, chip_id);
 		fallthrough;
@@ -389,12 +389,12 @@ static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
 		qcom_socinfo->info.raw_device_num =
 			__le32_to_cpu(info->raw_device_num);
 
-		debugfs_create_x32("chip_family", 0400, qcom_socinfo->dbg_root,
+		debugfs_create_x32("chip_family", 0444, qcom_socinfo->dbg_root,
 				   &qcom_socinfo->info.chip_family);
-		debugfs_create_x32("raw_device_family", 0400,
+		debugfs_create_x32("raw_device_family", 0444,
 				   qcom_socinfo->dbg_root,
 				   &qcom_socinfo->info.raw_device_family);
-		debugfs_create_x32("raw_device_number", 0400,
+		debugfs_create_x32("raw_device_number", 0444,
 				   qcom_socinfo->dbg_root,
 				   &qcom_socinfo->info.raw_device_num);
 		fallthrough;
@@ -403,7 +403,7 @@ static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
 	case SOCINFO_VERSION(0, 9):
 		qcom_socinfo->info.foundry_id = __le32_to_cpu(info->foundry_id);
 
-		debugfs_create_u32("foundry_id", 0400, qcom_socinfo->dbg_root,
+		debugfs_create_u32("foundry_id", 0444, qcom_socinfo->dbg_root,
 				   &qcom_socinfo->info.foundry_id);
 		fallthrough;
 	case SOCINFO_VERSION(0, 8):
@@ -415,7 +415,7 @@ static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
 		qcom_socinfo->info.hw_plat_subtype =
 			__le32_to_cpu(info->hw_plat_subtype);
 
-		debugfs_create_u32("hardware_platform_subtype", 0400,
+		debugfs_create_u32("hardware_platform_subtype", 0444,
 				   qcom_socinfo->dbg_root,
 				   &qcom_socinfo->info.hw_plat_subtype);
 		fallthrough;
@@ -423,28 +423,28 @@ static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
 		qcom_socinfo->info.accessory_chip =
 			__le32_to_cpu(info->accessory_chip);
 
-		debugfs_create_u32("accessory_chip", 0400,
+		debugfs_create_u32("accessory_chip", 0444,
 				   qcom_socinfo->dbg_root,
 				   &qcom_socinfo->info.accessory_chip);
 		fallthrough;
 	case SOCINFO_VERSION(0, 4):
 		qcom_socinfo->info.plat_ver = __le32_to_cpu(info->plat_ver);
 
-		debugfs_create_u32("platform_version", 0400,
+		debugfs_create_u32("platform_version", 0444,
 				   qcom_socinfo->dbg_root,
 				   &qcom_socinfo->info.plat_ver);
 		fallthrough;
 	case SOCINFO_VERSION(0, 3):
 		qcom_socinfo->info.hw_plat = __le32_to_cpu(info->hw_plat);
 
-		debugfs_create_u32("hardware_platform", 0400,
+		debugfs_create_u32("hardware_platform", 0444,
 				   qcom_socinfo->dbg_root,
 				   &qcom_socinfo->info.hw_plat);
 		fallthrough;
 	case SOCINFO_VERSION(0, 2):
 		qcom_socinfo->info.raw_ver  = __le32_to_cpu(info->raw_ver);
 
-		debugfs_create_u32("raw_version", 0400, qcom_socinfo->dbg_root,
+		debugfs_create_u32("raw_version", 0444, qcom_socinfo->dbg_root,
 				   &qcom_socinfo->info.raw_ver);
 		fallthrough;
 	case SOCINFO_VERSION(0, 1):
@@ -461,11 +461,11 @@ static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
 
 		dentry = debugfs_create_dir(socinfo_image_names[i],
 					    qcom_socinfo->dbg_root);
-		debugfs_create_file("name", 0400, dentry, &versions[i],
+		debugfs_create_file("name", 0444, dentry, &versions[i],
 				    &qcom_image_name_ops);
-		debugfs_create_file("variant", 0400, dentry, &versions[i],
+		debugfs_create_file("variant", 0444, dentry, &versions[i],
 				    &qcom_image_variant_ops);
-		debugfs_create_file("oem", 0400, dentry, &versions[i],
+		debugfs_create_file("oem", 0444, dentry, &versions[i],
 				    &qcom_image_oem_ops);
 	}
 }

base-commit: 2c85ebc57b3e1817b6ce1a6b703928e113a90442
-- 
https://chromeos.dev

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