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authorSaurabh Sengar <ssengar@linux.microsoft.com>2023-03-20 10:47:36 +0300
committerWei Liu <wei.liu@kernel.org>2023-04-17 22:16:22 +0300
commita4fea9b78ebea6df9a61f34cfc2f7ed0bbc8a9fc (patch)
treef04033d3014e9b9684a7509bc2024fec3d8d997d /drivers/clocksource
parent6a8f57ae2eb07ab39a6f0ccad60c760743051026 (diff)
downloadlinux-a4fea9b78ebea6df9a61f34cfc2f7ed0bbc8a9fc.tar.xz
drivers/clocksource/hyper-v: non ACPI support in hyperv clock
Add a placeholder function for the hv_setup_stimer0_irq API to accommodate systems without ACPI support. Since this function is not utilized on x86/x64 systems and non-ACPI support is only intended for x86/x64 systems, a placeholder function is sufficient for now and can be improved upon if necessary in the future. Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/1679298460-11855-2-git-send-email-ssengar@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'drivers/clocksource')
-rw-r--r--drivers/clocksource/hyperv_timer.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/clocksource/hyperv_timer.c b/drivers/clocksource/hyperv_timer.c
index c0cef92b12b8..f32948c8a96f 100644
--- a/drivers/clocksource/hyperv_timer.c
+++ b/drivers/clocksource/hyperv_timer.c
@@ -49,7 +49,7 @@ static bool direct_mode_enabled;
static int stimer0_irq = -1;
static int stimer0_message_sint;
-static DEFINE_PER_CPU(long, stimer0_evt);
+static __maybe_unused DEFINE_PER_CPU(long, stimer0_evt);
/*
* Common code for stimer0 interrupts coming via Direct Mode or
@@ -68,7 +68,7 @@ EXPORT_SYMBOL_GPL(hv_stimer0_isr);
* stimer0 interrupt handler for architectures that support
* per-cpu interrupts, which also implies Direct Mode.
*/
-static irqreturn_t hv_stimer0_percpu_isr(int irq, void *dev_id)
+static irqreturn_t __maybe_unused hv_stimer0_percpu_isr(int irq, void *dev_id)
{
hv_stimer0_isr();
return IRQ_HANDLED;
@@ -196,6 +196,7 @@ void __weak hv_remove_stimer0_handler(void)
{
};
+#ifdef CONFIG_ACPI
/* Called only on architectures with per-cpu IRQs (i.e., not x86/x64) */
static int hv_setup_stimer0_irq(void)
{
@@ -230,6 +231,16 @@ static void hv_remove_stimer0_irq(void)
stimer0_irq = -1;
}
}
+#else
+static int hv_setup_stimer0_irq(void)
+{
+ return 0;
+}
+
+static void hv_remove_stimer0_irq(void)
+{
+}
+#endif
/* hv_stimer_alloc - Global initialization of the clockevent and stimer0 */
int hv_stimer_alloc(bool have_percpu_irqs)