rtc: zynqmp: Return optional clock lookup errors

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devm_clk_get_optional() returns NULL when the optional clock is absent,
but returns an ERR_PTR when the clock provider lookup fails.  Probe
currently keeps the ERR_PTR and then passes it to clk_get_rate().

Return the lookup error instead.  A truly absent optional clock still
reaches the existing calibration fallback through clk_get_rate(NULL).

Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Fixes: 07dcc6f9c7 ("rtc: zynqmp: Add calibration set and get support")
Reviewed-by: Michal Simek <michal.simek@amd.com>
Link: https://patch.msgid.link/20260624055524.38522-1-pengpeng@iscas.ac.cn
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

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Pengpeng Hou 2026-06-24 13:55:24 +08:00 • committed by Alexandre Belloni

parent 2943ec93ee

commit 5904c41095

1 changed files with 3 additions and 4 deletions

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drivers/rtc/rtc-zynqmp.c

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