Commit d252e9b1 authored by Wenchao Chen's avatar Wenchao Chen Committed by Ulf Hansson
Browse files

mmc: sdhci-sprd: Fix the limitation of div 



Because the bit field size of the divider coefficient register is 1023, it is
limited before returning the value.

Signed-off-by: default avatarWenchao Chen <wenchao.chen@unisoc.com>
Link: https://lore.kernel.org/r/20220914063702.20283-1-wenchao.chen666@gmail.com


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 627a78b2

drivers/mmc/host/sdhci-sprd.c

+3 −3
Original line number Diff line number Diff line
@@ -205,14 +205,14 @@ static inline u32 sdhci_sprd_calc_div(u32 base_clk, u32 clk) 
	if ((base_clk / div) > (clk * 2))

		div++;



	if (div > SDHCI_SPRD_CLK_MAX_DIV)

		div = SDHCI_SPRD_CLK_MAX_DIV;



	if (div % 2)

		div = (div + 1) / 2;

	else

		div = div / 2;



	if (div > SDHCI_SPRD_CLK_MAX_DIV)

		div = SDHCI_SPRD_CLK_MAX_DIV;



	return div;

}