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clk: Allow clk_get_by_name() with NULL name

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This allows devm_clock_get(dev, NULL) to work and get the first clock,
which is common in code ported from Linux.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Link: https://lore.kernel.org/r/20230122000252.53642-1-samuel@sholland.org
This commit is contained in:
Samuel Holland 2023-01-21 18:02:51 -06:00 • committed by Sean Anderson
parent c40251c120
commit 2050f824e1
3 changed files with 14 additions and 7 deletions
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4
include/clk.h
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@ -167,7 +167,7 @@ int clk_get_bulk(struct udevice *dev, struct clk_bulk *bulk);
* clk_get_by_name() - Get/request a clock by name.
* @dev: The client device.
* @name: The name of the clock to request, within the client's list of
* clocks.
* clocks, or NULL to request the first clock in the list.
* @clk: A pointer to a clock struct to initialize.
*
* This looks up and requests a clock. The name is relative to the client
@ -184,7 +184,7 @@ int clk_get_by_name(struct udevice *dev, const char *name, struct clk *clk);
* clk_get_by_name_nodev - Get/request a clock by name without a device.
* @node: The client ofnode.
* @name: The name of the clock to request, within the client's list of
* clocks.
* clocks, or NULL to request the first clock in the list.
* @clk: A pointer to a clock struct to initialize.
*
* Return: 0 if OK, or a negative error code.