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platform/x86: mlx-platform: Make activation of some drivers conditional

Browse source 
Current assumption in driver that any system is capable of LED,
hotplug or watchdog support. It could be not true for some new coming
systems.
Add validation for LED, hotplug, watchdog configuration and skip
activation of relevant drivers if not configured.

Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Oleksandr Shamray <oleksandrs@nvidia.com>
Link: https://lore.kernel.org/r/20220711084559.62447-2-vadimp@nvidia.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Vadim Pasternak 2022-07-11 11:45:51 +03:00 committed by Hans de Goede
parent b644c95598
commit e05d6b658f
1 changed files with 35 additions and 27 deletions
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62
drivers/platform/x86/mlx-platform.c
View file

@ -4853,16 +4853,18 @@ static int __init mlxplat_init(void)
}
/* Add hotplug driver */
mlxplat_hotplug->regmap = priv->regmap;
priv->pdev_hotplug = platform_device_register_resndata(
&mlxplat_dev->dev, "mlxreg-hotplug",
PLATFORM_DEVID_NONE,
mlxplat_mlxcpld_resources,
ARRAY_SIZE(mlxplat_mlxcpld_resources),
mlxplat_hotplug, sizeof(*mlxplat_hotplug));
if (IS_ERR(priv->pdev_hotplug)) {
err = PTR_ERR(priv->pdev_hotplug);
goto fail_platform_mux_register;
if (mlxplat_hotplug) {
mlxplat_hotplug->regmap = priv->regmap;
priv->pdev_hotplug =
platform_device_register_resndata(&mlxplat_dev->dev,
"mlxreg-hotplug", PLATFORM_DEVID_NONE,
mlxplat_mlxcpld_resources,
ARRAY_SIZE(mlxplat_mlxcpld_resources),
mlxplat_hotplug, sizeof(*mlxplat_hotplug));
if (IS_ERR(priv->pdev_hotplug)) {
err = PTR_ERR(priv->pdev_hotplug);
goto fail_platform_mux_register;
}
}
/* Set default registers. */
@ -4875,24 +4877,26 @@ static int __init mlxplat_init(void)
}
/* Add LED driver. */
mlxplat_led->regmap = priv->regmap;
priv->pdev_led = platform_device_register_resndata(
&mlxplat_dev->dev, "leds-mlxreg",
PLATFORM_DEVID_NONE, NULL, 0,
mlxplat_led, sizeof(*mlxplat_led));
if (IS_ERR(priv->pdev_led)) {
err = PTR_ERR(priv->pdev_led);
goto fail_platform_hotplug_register;
if (mlxplat_led) {
mlxplat_led->regmap = priv->regmap;
priv->pdev_led =
platform_device_register_resndata(&mlxplat_dev->dev, "leds-mlxreg",
PLATFORM_DEVID_NONE, NULL, 0, mlxplat_led,
sizeof(*mlxplat_led));
if (IS_ERR(priv->pdev_led)) {
err = PTR_ERR(priv->pdev_led);
goto fail_platform_hotplug_register;
}
}
/* Add registers io access driver. */
if (mlxplat_regs_io) {
mlxplat_regs_io->regmap = priv->regmap;
priv->pdev_io_regs = platform_device_register_resndata(
&mlxplat_dev->dev, "mlxreg-io",
PLATFORM_DEVID_NONE, NULL, 0,
mlxplat_regs_io,
sizeof(*mlxplat_regs_io));
priv->pdev_io_regs = platform_device_register_resndata(&mlxplat_dev->dev,
"mlxreg-io",
PLATFORM_DEVID_NONE, NULL,
0, mlxplat_regs_io,
sizeof(*mlxplat_regs_io));
if (IS_ERR(priv->pdev_io_regs)) {
err = PTR_ERR(priv->pdev_io_regs);
goto fail_platform_led_register;
@ -4949,9 +4953,11 @@ static int __init mlxplat_init(void)
if (mlxplat_regs_io)
platform_device_unregister(priv->pdev_io_regs);
fail_platform_led_register:
platform_device_unregister(priv->pdev_led);
if (mlxplat_led)
platform_device_unregister(priv->pdev_led);
fail_platform_hotplug_register:
platform_device_unregister(priv->pdev_hotplug);
if (mlxplat_hotplug)
platform_device_unregister(priv->pdev_hotplug);
fail_platform_mux_register:
while (--i >= 0)
platform_device_unregister(priv->pdev_mux[i]);
@ -4974,8 +4980,10 @@ static void __exit mlxplat_exit(void)
platform_device_unregister(priv->pdev_fan);
if (priv->pdev_io_regs)
platform_device_unregister(priv->pdev_io_regs);
platform_device_unregister(priv->pdev_led);
platform_device_unregister(priv->pdev_hotplug);
if (priv->pdev_led)
platform_device_unregister(priv->pdev_led);
if (priv->pdev_hotplug)
platform_device_unregister(priv->pdev_hotplug);
for (i = mlxplat_mux_num - 1; i >= 0 ; i--)
platform_device_unregister(priv->pdev_mux[i]);