55 lines
1.6 KiB
Diff
55 lines
1.6 KiB
Diff
From 7e8fc396d34f6c9f536cb9540f212a2fd0f11685 Mon Sep 17 00:00:00 2001
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From: Tobias Schramm <t.schramm@manjaro.org>
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Date: Thu, 28 May 2020 14:12:56 +0200
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Subject: [PATCH 1/8] tty: serdev: support shutdown op
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Allow serdev drivers to register a shutdown handler
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Signed-off-by: Tobias Schramm <t.schramm@manjaro.org>
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---
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drivers/tty/serdev/core.c | 11 +++++++++++
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include/linux/serdev.h | 1 +
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2 files changed, 12 insertions(+)
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diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c
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index c5f0d936b003..37e45c356540 100644
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--- a/drivers/tty/serdev/core.c
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+++ b/drivers/tty/serdev/core.c
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@@ -432,11 +432,22 @@ static int serdev_drv_remove(struct device *dev)
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return 0;
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}
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+static void serdev_drv_shutdown(struct device *dev)
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+{
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+ const struct serdev_device_driver *sdrv;
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+ if (dev->driver) {
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+ sdrv = to_serdev_device_driver(dev->driver);
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+ if (sdrv->shutdown)
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+ sdrv->shutdown(to_serdev_device(dev));
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+ }
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+}
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+
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static struct bus_type serdev_bus_type = {
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.name = "serial",
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.match = serdev_device_match,
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.probe = serdev_drv_probe,
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.remove = serdev_drv_remove,
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+ .shutdown = serdev_drv_shutdown,
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};
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/**
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diff --git a/include/linux/serdev.h b/include/linux/serdev.h
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index 9f14f9c12ec4..94050561325c 100644
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--- a/include/linux/serdev.h
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+++ b/include/linux/serdev.h
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@@ -63,6 +63,7 @@ struct serdev_device_driver {
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struct device_driver driver;
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int (*probe)(struct serdev_device *);
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void (*remove)(struct serdev_device *);
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+ void (*shutdown)(struct serdev_device *);
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};
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static inline struct serdev_device_driver *to_serdev_device_driver(struct device_driver *d)
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--
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2.28.0
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