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reset: Share struct reset_control between reset_control_get calls

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Now that struct reset_control no longer stores the device pointer for
the device calling reset_control_get we can share a single struct
reset_control when multiple calls to reset_control_get are made for
the same reset line (same id / index).

This is a preparation patch for adding support for shared reset lines.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Hans de Goede 2016-02-23 18:46:25 +01:00 • committed by Philipp Zabel
parent 6c96f05c8b
commit c15ddec2ca
2 changed files with 65 additions and 21 deletions
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2
include/linux/reset-controller.h
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@ -31,6 +31,7 @@ struct of_phandle_args;
* @ops: a pointer to device specific struct reset_control_ops
* @owner: kernel module of the reset controller driver
* @list: internal list of reset controller devices
* @reset_control_head: head of internal list of requested reset controls
* @of_node: corresponding device tree node as phandle target
* @of_reset_n_cells: number of cells in reset line specifiers
* @of_xlate: translation function to translate from specifier as found in the
@ -41,6 +42,7 @@ struct reset_controller_dev {
const struct reset_control_ops *ops;
struct module *owner;
struct list_head list;
struct list_head reset_control_head;
struct device_node *of_node;
int of_reset_n_cells;
int (*of_xlate)(struct reset_controller_dev *rcdev,