Claudiu Beznea 0cc1de475c clk: at91: usb: continue if clk_hw_round_rate() return zero ... [ Upstream commit b0ecf1c6c6 ] clk_hw_round_rate() may call round rate function of its parents. In case of SAM9X60 two of USB parrents are PLLA and UPLL. These clocks are controlled by clk-sam9x60-pll.c driver. The round rate function for this driver is sam9x60_pll_round_rate() which call in turn sam9x60_pll_get_best_div_mul(). In case the requested rate is not in the proper range (rate < characteristics->output[0].min && rate > characteristics->output[0].max) the sam9x60_pll_round_rate() will return a negative number to its caller (called by clk_core_round_rate_nolock()). clk_hw_round_rate() will return zero in case a negative number is returned by clk_core_round_rate_nolock(). With this, the USB clock will continue its rate computation even caller of clk_hw_round_rate() returned an error. With this, the USB clock on SAM9X60 may not chose the best parent. I detected this after a suspend/resume cycle on SAM9X60. Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> Link: https://lkml.kernel.org/r/1579261009-4573-2-git-send-email-claudiu.beznea@microchip.com Signed-off-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-04-23 10:30:17 +02:00
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block	rbd: call rbd_dev_unprobe() after unwatching and flushing notifies	2020-04-23 10:30:15 +02:00
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clk	clk: at91: usb: continue if clk_hw_round_rate() return zero	2020-04-23 10:30:17 +02:00
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of	of: overlay: kmemleak in dup_and_fixup_symbol_prop()	2020-04-23 10:30:14 +02:00
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watchdog	watchdog: sp805: fix restart handler	2020-04-23 10:30:12 +02:00
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