linux-kernel - [PATCH] mmc: use usleep_range() in mmc

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Date:	Wed, 21 Dec 2011 10:56:16 +0400
From:	Dmitry Antipov <dmitry.antipov@...aro.org>
To:	linaro-dev@...ts.linaro.org
CC:	patches@...aro.org, linux-mmc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] mmc: use usleep_range() in mmc_delay()

 From f447d78db65c6675e69466e8ed08364ff065ac08 Mon Sep 17 00:00:00 2001
From: Dmitry Antipov <dmitry.antipov@...aro.org>
Date: Wed, 21 Dec 2011 10:51:03 +0400
Subject: [PATCH] mmc: use usleep_range() in mmc_delay()

---
  drivers/mmc/core/core.h |    8 ++------
  1 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h
index 14664f1..a77851e 100644
--- a/drivers/mmc/core/core.h
+++ b/drivers/mmc/core/core.h
@@ -47,12 +47,8 @@ void mmc_power_off(struct mmc_host *host);

  static inline void mmc_delay(unsigned int ms)
  {
-	if (ms < 1000 / HZ) {
-		cond_resched();
-		mdelay(ms);
-	} else {
-		msleep(ms);
-	}
+	unsigned long us = ms * USEC_PER_MSEC;
+	usleep_range(us, us + 1000);
  }

  void mmc_rescan(struct work_struct *work);
-- 
1.7.7.4

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