6.8-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx> commit e3dc66d998d2b0c2734db9ca1d6c94c97349529a upstream. This reverts commit 058a38acba15fd8e7b262ec6e17c4204cb15f984. It's not necessary to avoid a spinlock, a sleeping lock on PREEMPT_RT, in an interrupt handler as the interrupt handler itself would be called in a process context if PREEMPT_RT is enabled. So revert the patch. Cc: stable@xxxxxxxxxxxxxxx # for 6.8 Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx> Acked-by: Tomas Winkler <tomas.winkler@xxxxxxxxx> Link: https://lore.kernel.org/r/20240403051341.3534650-1-wentong.wu@xxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/misc/mei/vsc-tp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/misc/mei/vsc-tp.c +++ b/drivers/misc/mei/vsc-tp.c @@ -419,6 +419,8 @@ static irqreturn_t vsc_tp_isr(int irq, v atomic_inc(&tp->assert_cnt); + wake_up(&tp->xfer_wait); + return IRQ_WAKE_THREAD; } @@ -426,8 +428,6 @@ static irqreturn_t vsc_tp_thread_isr(int { struct vsc_tp *tp = data; - wake_up(&tp->xfer_wait); - if (tp->event_notify) tp->event_notify(tp->event_notify_context);
