Xen / ACPI / processor: Remove unneeded NULL check

Before xen_acpi_processor_enable() is called, struct acpi_processor *pr is
allocated in xen_acpi_processor_add() and checked if it's NULL, so no need
to check again when passed to xen_acpi_processor_enable(), just remove it.

Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
CC: Boris Ostrovsky <boris.ostrovsky@oracle.com>
CC: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/xen/xen-acpi-cpuhotplug.c b/drivers/xen/xen-acpi-cpuhotplug.c
index 5a62aa0..f4a3694 100644 (file)
--- a/drivers/xen/xen-acpi-cpuhotplug.c
+++ b/drivers/xen/xen-acpi-cpuhotplug.c
@@ -46,13 +46,7 @@ static int xen_acpi_processor_enable(struct acpi_device *device)
        unsigned long long value;
        union acpi_object object = { 0 };
        struct acpi_buffer buffer = { sizeof(union acpi_object), &object };
-       struct acpi_processor *pr;
-
-       pr = acpi_driver_data(device);
-       if (!pr) {
-               pr_err(PREFIX "Cannot find driver data\n");
-               return -EINVAL;
-       }
+       struct acpi_processor *pr = acpi_driver_data(device);
 
        if (!strcmp(acpi_device_hid(device), ACPI_PROCESSOR_OBJECT_HID)) {
                /* Declared with "Processor" statement; match ProcessorID */