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https://github.com/Divested-Mobile/DivestOS-Build.git
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106 lines
3.1 KiB
Diff
106 lines
3.1 KiB
Diff
From dd40cc2bd210dd7a4dd649e8f79add2bbeda2bd5 Mon Sep 17 00:00:00 2001
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From: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
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Date: Wed, 15 Jun 2016 09:46:21 -0700
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Subject: spmi: prevent showing the address of spmidev
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Creating devices with the address of the container spmidev is not
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indicative of the actual hardware device it represents.
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Instead use an unique id to indicate the device it represents.
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CRs-Fixed: 1024197
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Change-Id: Id18e2a19f4fa1249901a3f275defa8f589270d69
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Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
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---
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drivers/spmi/spmi.c | 18 +++++++++++++++---
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include/linux/spmi.h | 6 +++++-
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2 files changed, 20 insertions(+), 4 deletions(-)
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diff --git a/drivers/spmi/spmi.c b/drivers/spmi/spmi.c
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index f5e49c8..1a1bae9 100644
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--- a/drivers/spmi/spmi.c
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+++ b/drivers/spmi/spmi.c
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@@ -32,6 +32,7 @@ struct spmii_boardinfo {
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static DEFINE_MUTEX(board_lock);
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static LIST_HEAD(board_list);
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static DEFINE_IDR(ctrl_idr);
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+static DEFINE_IDA(spmi_devid_ida);
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static struct device_type spmi_dev_type;
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static struct device_type spmi_ctrl_type;
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@@ -229,22 +230,32 @@ int spmi_add_device(struct spmi_device *spmidev)
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{
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int rc;
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struct device *dev = get_valid_device(spmidev);
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+ int id;
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if (!dev) {
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pr_err("invalid SPMI device\n");
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return -EINVAL;
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}
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+ id = ida_simple_get(&spmi_devid_ida, 0, 0, GFP_KERNEL);
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+ if (id < 0) {
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+ pr_err("No id available status = %d\n", id);
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+ return id;
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+ }
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+
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/* Set the device name */
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- dev_set_name(dev, "%s-%p", spmidev->name, spmidev);
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+ spmidev->id = id;
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+ dev_set_name(dev, "%s-%d", spmidev->name, spmidev->id);
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/* Device may be bound to an active driver when this returns */
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rc = device_add(dev);
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- if (rc < 0)
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+ if (rc < 0) {
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+ ida_simple_remove(&spmi_devid_ida, spmidev->id);
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dev_err(dev, "Can't add %s, status %d\n", dev_name(dev), rc);
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- else
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+ } else {
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dev_dbg(dev, "device %s registered\n", dev_name(dev));
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+ }
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return rc;
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}
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@@ -292,6 +303,7 @@ EXPORT_SYMBOL_GPL(spmi_new_device);
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void spmi_remove_device(struct spmi_device *spmi_dev)
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{
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device_unregister(&spmi_dev->dev);
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+ ida_simple_remove(&spmi_devid_ida, spmi_dev->id);
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}
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EXPORT_SYMBOL_GPL(spmi_remove_device);
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diff --git a/include/linux/spmi.h b/include/linux/spmi.h
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index b581de8..5a8525d 100644
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--- a/include/linux/spmi.h
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+++ b/include/linux/spmi.h
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@@ -1,4 +1,4 @@
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-/* Copyright (c) 2012-2014 The Linux Foundation. All rights reserved.
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+/* Copyright (c) 2012-2014, 2016 The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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@@ -120,6 +120,9 @@ struct spmi_resource {
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* @dev_node: array of SPMI resources when used with spmi-dev-container.
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* @num_dev_node: number of device_node structures.
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* @sid: Slave Identifier.
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+ * @id: Unique identifier to differentiate from other spmi devices with
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+ * possibly same name.
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+ *
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*/
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struct spmi_device {
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struct device dev;
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@@ -129,6 +132,7 @@ struct spmi_device {
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struct spmi_resource *dev_node;
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u32 num_dev_node;
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u8 sid;
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+ int id;
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};
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#define to_spmi_device(d) container_of(d, struct spmi_device, dev)
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--
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cgit v1.1
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