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clk: let init callback return an error code

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If the init callback is allowed to request resources, it needs a return
value to report the outcome of such a request.

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lkml.kernel.org/r/20190924123954.31561-3-jbrunet@baylibre.com
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Jerome Brunet
2019-09-24 14:39:53 +02:00
committed by Stephen Boyd
parent f6fa75ca91
commit 89d079dc17
14 changed files with 72 additions and 35 deletions
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10
include/linux/clk-provider.h
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@@ -190,8 +190,12 @@ struct clk_duty {
*
* @init: Perform platform-specific initialization magic.
* This is not not used by any of the basic clock types.
* Please consider other ways of solving initialization problems
* before using this callback, as its use is discouraged.
* This callback exist for HW which needs to perform some
* initialisation magic for CCF to get an accurate view of the
* clock. It may also be used dynamic resource allocation is
* required. It shall not used to deal with clock parameters,
* such as rate or parents.
* Returns 0 on success, -EERROR otherwise.
*
* @debug_init: Set up type-specific debugfs entries for this clock. This
* is called once, after the debugfs directory entry for this
@@ -243,7 +247,7 @@ struct clk_ops {
struct clk_duty *duty);
int (*set_duty_cycle)(struct clk_hw *hw,
struct clk_duty *duty);
void (*init)(struct clk_hw *hw);
int (*init)(struct clk_hw *hw);
void (*debug_init)(struct clk_hw *hw, struct dentry *dentry);
};