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rtc: ds1307: fix incorrect maximum clock rate handling

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[ Upstream commit cf6eb547a24af7ad7bbd2abe9c5327f956bbeae8 ]

When ds3231_clk_sqw_round_rate() is called with a requested rate higher
than the highest supported rate, it currently returns 0, which disables
the clock. According to the clk API, round_rate() should instead return
the highest supported rate. Update the function to return the maximum
supported rate in this case.

Fixes: 6c6ff145b3 ("rtc: ds1307: add clock provider support for DS3231")
Signed-off-by: Brian Masney <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexandre Belloni <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
This commit is contained in:
Brian Masney 2025-07-10 11:20:21 -04:00 • committed by Greg Kroah-Hartman
commit 0a9ac7f424
1 changed files with 1 additions and 1 deletions
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drivers/rtc/rtc-ds1307.c
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@ -1381,7 +1381,7 @@ static long ds3231_clk_sqw_round_rate(struct clk_hw *hw, unsigned long rate,
return ds3231_clk_sqw_rates[i];
}
return 0;
return ds3231_clk_sqw_rates[ARRAY_SIZE(ds3231_clk_sqw_rates) - 1];
}
static int ds3231_clk_sqw_set_rate(struct clk_hw *hw, unsigned long rate,