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Input: serio - define serio_pause_rx guard to pause and resume serio ports

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serio_pause_rx() and serio_continue_rx() are usually used together to
temporarily stop receiving interrupts/data for a given serio port.
Define "serio_pause_rx" guard for this so that the port is always
resumed once critical section is over.

Example:

	scoped_guard(serio_pause_rx, elo->serio) {
		elo->expected_packet = toupper(packet[0]);
		init_completion(&elo->cmd_done);
	}

Link: https://lore.kernel.org/r/20240905041732.2034348-2-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2024-09-04 21:17:06 -07:00
parent c03dfa7fdf
commit 0e45a09a1d
1 changed files with 3 additions and 0 deletions
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3
include/linux/serio.h
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@ -6,6 +6,7 @@
#define _SERIO_H
#include <linux/cleanup.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/list.h>
@ -161,4 +162,6 @@ static inline void serio_continue_rx(struct serio *serio)
spin_unlock_irq(&serio->lock);
}
DEFINE_GUARD(serio_pause_rx, struct serio *, serio_pause_rx(_T), serio_continue_rx(_T))
#endif