blob: 48591d444a1285bf26a77a296739cc87056a0b1d (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
From 336bc343e754aa1b30c877eec59b3fa1e905aa1e Mon Sep 17 00:00:00 2001
From: Tobias Schramm <t.schramm@manjaro.org>
Date: Thu, 28 May 2020 14:12:56 +0200
Subject: [PATCH 03/22] tty: serdev: support shutdown op
Allow serdev drivers to register a shutdown handler
Signed-off-by: Tobias Schramm <t.schramm@manjaro.org>
---
drivers/tty/serdev/core.c | 11 +++++++++++
include/linux/serdev.h | 1 +
2 files changed, 12 insertions(+)
diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c
index c5f0d936b003..37e45c356540 100644
--- a/drivers/tty/serdev/core.c
+++ b/drivers/tty/serdev/core.c
@@ -432,11 +432,22 @@ static int serdev_drv_remove(struct device *dev)
return 0;
}
+static void serdev_drv_shutdown(struct device *dev)
+{
+ const struct serdev_device_driver *sdrv;
+ if (dev->driver) {
+ sdrv = to_serdev_device_driver(dev->driver);
+ if (sdrv->shutdown)
+ sdrv->shutdown(to_serdev_device(dev));
+ }
+}
+
static struct bus_type serdev_bus_type = {
.name = "serial",
.match = serdev_device_match,
.probe = serdev_drv_probe,
.remove = serdev_drv_remove,
+ .shutdown = serdev_drv_shutdown,
};
/**
diff --git a/include/linux/serdev.h b/include/linux/serdev.h
index 9f14f9c12ec4..94050561325c 100644
--- a/include/linux/serdev.h
+++ b/include/linux/serdev.h
@@ -63,6 +63,7 @@ struct serdev_device_driver {
struct device_driver driver;
int (*probe)(struct serdev_device *);
void (*remove)(struct serdev_device *);
+ void (*shutdown)(struct serdev_device *);
};
static inline struct serdev_device_driver *to_serdev_device_driver(struct device_driver *d)
--
2.30.0
|
