Thread (10 messages) 10 messages, 3 authors, 2012-03-28
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[PATCH 1/3] mmc: atmel-mci: correct data timeout computation

From: ludovic.desroches at atmel.com <hidden>
Date: 2012-03-21 15:41:21
Also in: linux-mmc
Subsystem: microchip mmc/sd/sdio mci driver, multimedia card (mmc), secure digital (sd) and sdio subsystem, the rest · Maintainers: Aubin Constans, Ulf Hansson, Linus Torvalds

From: Ludovic Desroches <redacted>

The HSMCI operates at a rate of up to Master Clock divided by two.

Signed-off-by: Ludovic Desroches <redacted>
---
 drivers/mmc/host/atmel-mci.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index e4449a5..e161452 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -480,7 +480,7 @@ err:
 static inline unsigned int atmci_ns_to_clocks(struct atmel_mci *host,
 					unsigned int ns)
 {
-	return (ns * (host->bus_hz / 1000000) + 999) / 1000;
+	return (ns * ((host->bus_hz/2) / 1000000) + 999) / 1000;
 }
 
 static void atmci_set_timeout(struct atmel_mci *host,
-- 
1.7.5.4
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