[1/3] mmc: meson-gx: make sure the clock is rounded down

Message ID 20171002122743.32334-2-jbrunet@baylibre.com
State New
Headers show
Series
  • mmc: meson-gx: fixes for v4.14
Related show

Commit Message

Jerome Brunet Oct. 2, 2017, 12:27 p.m.
Using CLK_DIVIDER_ROUND_CLOSEST is unsafe as the mmc clock could be
rounded to a rate higher the specified rate. Removing this flag ensure
that, if the rate needs to be rounded, it will be rounded down.

Fixes: 51c5d8447bd7 ("MMC: meson: initial support for GX platforms")
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>

---
 drivers/mmc/host/meson-gx-mmc.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

-- 
2.13.5

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Patch

diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c
index c885c2d4b904..421c8719c202 100644
--- a/drivers/mmc/host/meson-gx-mmc.c
+++ b/drivers/mmc/host/meson-gx-mmc.c
@@ -531,8 +531,7 @@  static int meson_mmc_clk_init(struct meson_host *host)
 	div->shift = __ffs(CLK_DIV_MASK);
 	div->width = __builtin_popcountl(CLK_DIV_MASK);
 	div->hw.init = &init;
-	div->flags = (CLK_DIVIDER_ONE_BASED |
-		      CLK_DIVIDER_ROUND_CLOSEST);
+	div->flags = CLK_DIVIDER_ONE_BASED;
 
 	clk = devm_clk_register(host->dev, &div->hw);
 	if (WARN_ON(IS_ERR(clk)))