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Commit c2910c00 authored by Claudiu Beznea's avatar Claudiu Beznea Committed by Stephen Boyd
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clk: at91: clk-master: check if div or pres is zero



Check if div or pres is zero before using it as argument for ffs().
In case div is zero ffs() will return 0 and thus substracting from
zero will lead to invalid values to be setup in registers.

Fixes: 7a110b91 ("clk: at91: clk-master: re-factor master clock")
Fixes: 75c88143 ("clk: at91: clk-master: add master clock support for SAMA7G5")
Signed-off-by: default avatarClaudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20211011112719.3951784-9-claudiu.beznea@microchip.com


Acked-by: default avatarNicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: default avatarStephen Boyd <sboyd@kernel.org>
parent f12d028b
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