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authorWenchao Chen <wenchao.chen@unisoc.com>2022-09-14 09:37:02 +0300
committerUlf Hansson <ulf.hansson@linaro.org>2022-09-20 12:34:06 +0300
commitd252e9b1073a12fee68fc9a626a83035cd03cf70 (patch)
treefb04efd75975b79353b86e3b88465df805ff56a8 /drivers/mmc
parent627a78b2dec669c4efa216d827341c948eb3f42d (diff)
downloadlinux-d252e9b1073a12fee68fc9a626a83035cd03cf70.tar.xz
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: Wenchao Chen <wenchao.chen@unisoc.com> Link: https://lore.kernel.org/r/20220914063702.20283-1-wenchao.chen666@gmail.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/host/sdhci-sprd.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/mmc/host/sdhci-sprd.c b/drivers/mmc/host/sdhci-sprd.c
index f33e9349e4e6..46c55ab4884c 100644
--- a/drivers/mmc/host/sdhci-sprd.c
+++ b/drivers/mmc/host/sdhci-sprd.c
@@ -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;
}