Patch "clocksource/drivers/timer-riscv: Clear timer interrupt on timer initialization" has been added to the 6.7-stable tree

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This is a note to let you know that I've just added the patch titled

    clocksource/drivers/timer-riscv: Clear timer interrupt on timer initialization

to the 6.7-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     clocksource-drivers-timer-riscv-clear-timer-interrup.patch
and it can be found in the queue-6.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit b82e450b5008bcc2b72c088af15f075a7abb2ae8
Author: Ley Foon Tan <leyfoon.tan@xxxxxxxxxxxxxxxx>
Date:   Thu Mar 7 01:23:30 2024 +0800

    clocksource/drivers/timer-riscv: Clear timer interrupt on timer initialization
    
    [ Upstream commit 8248ca30ef89f9cc74ace62ae1b9a22b5f16736c ]
    
    In the RISC-V specification, the stimecmp register doesn't have a default
    value. To prevent the timer interrupt from being triggered during timer
    initialization, clear the timer interrupt by writing stimecmp with a
    maximum value.
    
    Fixes: 9f7a8ff6391f ("RISC-V: Prefer sstc extension if available")
    Cc: <stable@xxxxxxxxxxxxxxx>
    Signed-off-by: Ley Foon Tan <leyfoon.tan@xxxxxxxxxxxxxxxx>
    Reviewed-by: Samuel Holland <samuel.holland@xxxxxxxxxx>
    Tested-by: Samuel Holland <samuel.holland@xxxxxxxxxx>
    Reviewed-by: Atish Patra <atishp@xxxxxxxxxxxx>
    Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
    Link: https://lore.kernel.org/r/20240306172330.255844-1-leyfoon.tan@xxxxxxxxxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/clocksource/timer-riscv.c b/drivers/clocksource/timer-riscv.c
index 57857c0dfba97..1c732479a2c8d 100644
--- a/drivers/clocksource/timer-riscv.c
+++ b/drivers/clocksource/timer-riscv.c
@@ -101,6 +101,9 @@ static int riscv_timer_starting_cpu(unsigned int cpu)
 {
 	struct clock_event_device *ce = per_cpu_ptr(&riscv_clock_event, cpu);
 
+	/* Clear timer interrupt */
+	riscv_clock_event_stop();
+
 	ce->cpumask = cpumask_of(cpu);
 	ce->irq = riscv_clock_event_irq;
 	if (riscv_timer_cannot_wake_cpu)




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