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authorAnson Huang <Anson.Huang@nxp.com>2019-10-25 14:56:22 +0800
committerShawn Guo <shawnguo@kernel.org>2019-10-28 21:30:12 +0800
commita0708f559e4fa2239b84e927e661d26e6864e185 (patch)
treed174580f51e7ffddcda8e850301d5caa3ed97f80 /drivers/soc/imx
parente4f9eefbb8a976bb86dbdc9d2dd1a2a113801464 (diff)
downloadlinux-a0708f559e4fa2239b84e927e661d26e6864e185.tar.bz2
soc: imx8: Using existing serial_number instead of UID
The soc_device_attribute structure already contains a serial_number attribute to show SoC's unique ID, just use it to show SoC's unique ID instead of creating a new file called soc_uid. Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'drivers/soc/imx')
-rw-r--r--drivers/soc/imx/soc-imx8.c23
1 files changed, 9 insertions, 14 deletions
diff --git a/drivers/soc/imx/soc-imx8.c b/drivers/soc/imx/soc-imx8.c
index b9831576dd25..fcbf745a9971 100644
--- a/drivers/soc/imx/soc-imx8.c
+++ b/drivers/soc/imx/soc-imx8.c
@@ -29,14 +29,6 @@ struct imx8_soc_data {
static u64 soc_uid;
-static ssize_t soc_uid_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- return sprintf(buf, "%016llX\n", soc_uid);
-}
-
-static DEVICE_ATTR_RO(soc_uid);
-
static u32 __init imx8mq_soc_revision(void)
{
struct device_node *np;
@@ -174,22 +166,25 @@ static int __init imx8_soc_init(void)
goto free_soc;
}
+ soc_dev_attr->serial_number = kasprintf(GFP_KERNEL, "%016llX", soc_uid);
+ if (!soc_dev_attr->serial_number) {
+ ret = -ENOMEM;
+ goto free_rev;
+ }
+
soc_dev = soc_device_register(soc_dev_attr);
if (IS_ERR(soc_dev)) {
ret = PTR_ERR(soc_dev);
- goto free_rev;
+ goto free_serial_number;
}
- ret = device_create_file(soc_device_to_device(soc_dev),
- &dev_attr_soc_uid);
- if (ret)
- goto free_rev;
-
if (IS_ENABLED(CONFIG_ARM_IMX_CPUFREQ_DT))
platform_device_register_simple("imx-cpufreq-dt", -1, NULL, 0);
return 0;
+free_serial_number:
+ kfree(soc_dev_attr->serial_number);
free_rev:
if (strcmp(soc_dev_attr->revision, "unknown"))
kfree(soc_dev_attr->revision);