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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2024-09-04 21:17:06 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-02-27 04:30:14 -0800 |
| commit | 3e0686bc608ea6fd710e6ccf26f5ee06969fd3e5 (patch) | |
| tree | fa7fd17e8d09bbfa9c18b5b31d009d163ba03168 /include | |
| parent | 4a679448ef61f4f8d73050d914debd2eb2306a5a (diff) | |
| download | linux-3e0686bc608ea6fd710e6ccf26f5ee06969fd3e5.tar.gz linux-3e0686bc608ea6fd710e6ccf26f5ee06969fd3e5.tar.bz2 linux-3e0686bc608ea6fd710e6ccf26f5ee06969fd3e5.zip | |
Input: serio - define serio_pause_rx guard to pause and resume serio ports
[ Upstream commit 0e45a09a1da0872786885c505467aab8fb29b5b4 ]
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>
Stable-dep-of: 08bd5b7c9a24 ("Input: synaptics - fix crash when enabling pass-through port")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/serio.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/serio.h b/include/linux/serio.h index bf2191f25350..69a47674af65 100644 --- a/include/linux/serio.h +++ b/include/linux/serio.h @@ -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 |