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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2015-02-10 22:35:36 +0300
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2015-02-10 22:35:36 +0300
commit4ba24fef3eb3b142197135223b90ced2f319cd53 (patch)
treea20c125b27740ec7b4c761b11d801108e1b316b2 /drivers/reset/core.c
parent47c1ffb2b6b630894e9a16442611c056ab21c057 (diff)
parent98a4a59ee31a12105a2b84f5b8b515ac2cb208ef (diff)
downloadlinux-4ba24fef3eb3b142197135223b90ced2f319cd53.tar.xz
Merge branch 'next' into for-linus
Prepare first round of input updates for 3.20.
Diffstat (limited to 'drivers/reset/core.c')
-rw-r--r--drivers/reset/core.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/reset/core.c b/drivers/reset/core.c
index baeaf82d40d9..7955e00d04d4 100644
--- a/drivers/reset/core.c
+++ b/drivers/reset/core.c
@@ -126,6 +126,21 @@ int reset_control_deassert(struct reset_control *rstc)
EXPORT_SYMBOL_GPL(reset_control_deassert);
/**
+ * reset_control_status - returns a negative errno if not supported, a
+ * positive value if the reset line is asserted, or zero if the reset
+ * line is not asserted.
+ * @rstc: reset controller
+ */
+int reset_control_status(struct reset_control *rstc)
+{
+ if (rstc->rcdev->ops->status)
+ return rstc->rcdev->ops->status(rstc->rcdev, rstc->id);
+
+ return -ENOSYS;
+}
+EXPORT_SYMBOL_GPL(reset_control_status);
+
+/**
* of_reset_control_get - Lookup and obtain a reference to a reset controller.
* @node: device to be reset by the controller
* @id: reset line name