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firmware: arm_scpi: remove usage of drvdata and don't reset scpi_info to null 

There's no benefit using drvdata as variable scpi_info is global.

Setting scpi_info to NULL in scpi_remove isn't needed too. If arm_scpi
is built-in, then this code is never used. And if arm_scpi is built as
a module and some other module calls get_scpi_ops() then due to this
dependency scpi_remove is called only after the other module has been
removed.

Last but not least, users usually store the result of get_scpi_ops(),
therefore setting scpi_info to NULL wouldn't really help.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
[sudeep.holla: reworded the commit log a bit]
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Heiner Kallweit 2017-09-29 23:43:54 +02:00 committed by Sudeep Holla
parent 2bd6bf03f4
commit 0012694590
1 changed files with 6 additions and 16 deletions
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22
drivers/firmware/arm_scpi.c
View File

@ -862,8 +862,6 @@ static int scpi_init_versions(struct scpi_drvinfo *info)
static ssize_t protocol_version_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct scpi_drvinfo *scpi_info = dev_get_drvdata(dev);
return sprintf(buf, "%d.%d\n",
PROTOCOL_REV_MAJOR(scpi_info->protocol_version),
PROTOCOL_REV_MINOR(scpi_info->protocol_version));
@ -873,8 +871,6 @@ static DEVICE_ATTR_RO(protocol_version);
static ssize_t firmware_version_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct scpi_drvinfo *scpi_info = dev_get_drvdata(dev);
return sprintf(buf, "%d.%d.%d\n",
FW_REV_MAJOR(scpi_info->firmware_version),
FW_REV_MINOR(scpi_info->firmware_version),
@ -905,21 +901,17 @@ static int scpi_remove(struct platform_device *pdev)
{
int i;
struct device *dev = &pdev->dev;
struct scpi_drvinfo *info = platform_get_drvdata(pdev);
scpi_info = NULL; /* stop exporting SCPI ops through get_scpi_ops */
of_platform_depopulate(dev);
sysfs_remove_groups(&dev->kobj, versions_groups);
scpi_free_channels(dev, info->channels, info->num_chans);
platform_set_drvdata(pdev, NULL);
scpi_free_channels(dev, scpi_info->channels, scpi_info->num_chans);
for (i = 0; i < MAX_DVFS_DOMAINS && info->dvfs[i]; i++) {
kfree(info->dvfs[i]->opps);
kfree(info->dvfs[i]);
for (i = 0; i < MAX_DVFS_DOMAINS && scpi_info->dvfs[i]; i++) {
kfree(scpi_info->dvfs[i]->opps);
kfree(scpi_info->dvfs[i]);
}
devm_kfree(dev, info->channels);
devm_kfree(dev, info);
devm_kfree(dev, scpi_info->channels);
devm_kfree(dev, scpi_info);
return 0;
}
@ -1027,8 +1019,6 @@ err:
scpi_info->num_chans = count;
scpi_info->commands = scpi_std_commands;
platform_set_drvdata(pdev, scpi_info);
if (scpi_info->is_legacy) {
/* Replace with legacy variants */
scpi_ops.clk_set_val = legacy_scpi_clk_set_val;