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misc/pvpanic : break dependency on ACPI

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The pvpanic driver is available for architectures that do not
support ACPI.So break the dependency.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peng Hao 2018-11-06 22:57:18 +08:00 committed by Greg Kroah-Hartman
parent a8b71d2735
commit 77703e0b03
2 changed files with 22 additions and 3 deletions
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2
drivers/misc/Kconfig
View File

@ -515,7 +515,7 @@ config MISC_RTSX
config PVPANIC
tristate "pvpanic device support"
depends on ACPI
depends on ACPI || OF
help
This driver provides support for the pvpanic device. pvpanic is
a paravirtualized device provided by QEMU; it lets a virtual machine

23
drivers/misc/pvpanic.c
View File

@ -57,6 +57,7 @@ static struct notifier_block pvpanic_panic_nb = {
.priority = 1, /* let this called before broken drm_fb_helper */
};
#ifdef CONFIG_ACPI
static int pvpanic_add(struct acpi_device *device);
static int pvpanic_remove(struct acpi_device *device);
@ -126,6 +127,24 @@ static int pvpanic_remove(struct acpi_device *device)
return 0;
}
static int pvpanic_register_acpi_driver(void)
{
return acpi_bus_register_driver(&pvpanic_driver);
}
static void pvpanic_unregister_acpi_driver(void)
{
acpi_bus_unregister_driver(&pvpanic_driver);
}
#else
static int pvpanic_register_acpi_driver(void)
{
return -ENODEV;
}
static void pvpanic_unregister_acpi_driver(void) {}
#endif
static int pvpanic_mmio_probe(struct platform_device *pdev)
{
struct resource *mem;
@ -172,7 +191,7 @@ static int __init pvpanic_mmio_init(void)
if (acpi_disabled)
return platform_driver_register(&pvpanic_mmio_driver);
else
return acpi_bus_register_driver(&pvpanic_driver);
return pvpanic_register_acpi_driver();
}
static void __exit pvpanic_mmio_exit(void)
@ -180,7 +199,7 @@ static void __exit pvpanic_mmio_exit(void)
if (acpi_disabled)
platform_driver_unregister(&pvpanic_mmio_driver);
else
acpi_bus_unregister_driver(&pvpanic_driver);
pvpanic_unregister_acpi_driver();
}
module_init(pvpanic_mmio_init);