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From: Anton Vorontsov <avorontsov@mvista.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Wolfram Sang <w.sang@pengutronix.de>,
	Albert Herranz <albert_herranz@yahoo.es>,
	Matt Fleming <matt@console-pimps.org>,
	Ben Dooks <ben-linux@fluff.org>, Pierre Ossman <pierre@ossman.eu>,
	linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
	linuxppc-dev@ozlabs.org
Subject: [PATCH 7/8] sdhci: Get rid of mdelay()s where it is safe and makes sense
Date: Wed, 14 Jul 2010 17:08:09 +0400	[thread overview]
Message-ID: <20100714130809.GG517@oksana.dev.rtsoft.ru> (raw)
In-Reply-To: <20100714130728.GA27339@oksana.dev.rtsoft.ru>

Since we don't run in the atomic context any longer, we can
turn mdelay()s into msleep()s.

The only place where the driver is still using mdelay() is
sdhci_send_command(). There it is possible to use sleepable
delays too, but we don't actually want to force rescheduling
in a hot path.

Sure, we might end up calling msleep() there too, just not
via this safe patch.

Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
---
 drivers/mmc/host/sdhci-of-esdhc.c |    2 +-
 drivers/mmc/host/sdhci.c          |    6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index c8623de..e9f99fe 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -94,7 +94,7 @@ static void esdhc_set_clock(struct sdhci_host *host, unsigned int clock)
 	setbits32(host->ioaddr + ESDHC_SYSTEM_CONTROL, ESDHC_CLOCK_IPGEN |
 		  ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN |
 		  div << ESDHC_DIVIDER_SHIFT | pre_div << ESDHC_PREDIV_SHIFT);
-	mdelay(100);
+	msleep(100);
 out:
 	host->clock = clock;
 }
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 56d5c56..e6adda8 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -171,7 +171,7 @@ static void sdhci_reset(struct sdhci_host *host, u8 mask)
 			return;
 		}
 		timeout--;
-		mdelay(1);
+		msleep(1);
 	}
 
 	if (host->quirks & SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET)
@@ -1019,7 +1019,7 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 			return;
 		}
 		timeout--;
-		mdelay(1);
+		msleep(1);
 	}
 
 	clk |= SDHCI_CLOCK_CARD_EN;
@@ -1086,7 +1086,7 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
 	 * can apply clock after applying power
 	 */
 	if (host->quirks & SDHCI_QUIRK_DELAY_AFTER_POWER)
-		mdelay(10);
+		msleep(10);
 }
 
 /*****************************************************************************\
-- 
1.7.0.5


WARNING: multiple messages have this Message-ID (diff)
From: Anton Vorontsov <avorontsov@mvista.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Matt Fleming <matt@console-pimps.org>,
	Albert Herranz <albert_herranz@yahoo.es>,
	linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
	linuxppc-dev@ozlabs.org, Ben Dooks <ben-linux@fluff.org>,
	Pierre Ossman <pierre@ossman.eu>
Subject: [PATCH 7/8] sdhci: Get rid of mdelay()s where it is safe and makes sense
Date: Wed, 14 Jul 2010 17:08:09 +0400	[thread overview]
Message-ID: <20100714130809.GG517@oksana.dev.rtsoft.ru> (raw)
In-Reply-To: <20100714130728.GA27339@oksana.dev.rtsoft.ru>

Since we don't run in the atomic context any longer, we can
turn mdelay()s into msleep()s.

The only place where the driver is still using mdelay() is
sdhci_send_command(). There it is possible to use sleepable
delays too, but we don't actually want to force rescheduling
in a hot path.

Sure, we might end up calling msleep() there too, just not
via this safe patch.

Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
---
 drivers/mmc/host/sdhci-of-esdhc.c |    2 +-
 drivers/mmc/host/sdhci.c          |    6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index c8623de..e9f99fe 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -94,7 +94,7 @@ static void esdhc_set_clock(struct sdhci_host *host, unsigned int clock)
 	setbits32(host->ioaddr + ESDHC_SYSTEM_CONTROL, ESDHC_CLOCK_IPGEN |
 		  ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN |
 		  div << ESDHC_DIVIDER_SHIFT | pre_div << ESDHC_PREDIV_SHIFT);
-	mdelay(100);
+	msleep(100);
 out:
 	host->clock = clock;
 }
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 56d5c56..e6adda8 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -171,7 +171,7 @@ static void sdhci_reset(struct sdhci_host *host, u8 mask)
 			return;
 		}
 		timeout--;
-		mdelay(1);
+		msleep(1);
 	}
 
 	if (host->quirks & SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET)
@@ -1019,7 +1019,7 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 			return;
 		}
 		timeout--;
-		mdelay(1);
+		msleep(1);
 	}
 
 	clk |= SDHCI_CLOCK_CARD_EN;
@@ -1086,7 +1086,7 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
 	 * can apply clock after applying power
 	 */
 	if (host->quirks & SDHCI_QUIRK_DELAY_AFTER_POWER)
-		mdelay(10);
+		msleep(10);
 }
 
 /*****************************************************************************\
-- 
1.7.0.5

  parent reply	other threads:[~2010-07-14 13:08 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-07-14 13:07 [PATCH 0/8] sdhci: Move real work out of an atomic context Anton Vorontsov
2010-07-14 13:07 ` Anton Vorontsov
2010-07-14 13:07 ` [PATCH 1/8] sdhci: Turn timeout timer into delayed work Anton Vorontsov
2010-07-14 13:07   ` Anton Vorontsov
2010-07-14 13:07 ` [PATCH 2/8] sdhci: Use work structs instead of tasklets Anton Vorontsov
2010-07-14 13:07   ` Anton Vorontsov
2010-07-14 13:08 ` [PATCH 3/8] sdhci: Clear interrupt status register just once Anton Vorontsov
2010-07-14 13:08   ` Anton Vorontsov
2010-07-14 13:08 ` [PATCH 4/8] sdhci: Use threaded IRQ handler Anton Vorontsov
2010-07-14 13:08   ` Anton Vorontsov
2010-07-14 13:08 ` [PATCH 5/8] sdhci: Turn host->lock into a mutex Anton Vorontsov
2010-07-14 13:08   ` Anton Vorontsov
2010-07-14 13:08 ` [PATCH 6/8] sdhci: Get rid of card detect work Anton Vorontsov
2010-07-14 13:08   ` Anton Vorontsov
2010-07-14 13:08 ` Anton Vorontsov [this message]
2010-07-14 13:08   ` [PATCH 7/8] sdhci: Get rid of mdelay()s where it is safe and makes sense Anton Vorontsov
2010-07-14 13:08 ` [PATCH 8/8] sdhci: Use jiffies instead of a timeout counter Anton Vorontsov
2010-07-14 13:08   ` Anton Vorontsov
2010-07-15  6:02 ` [PATCH 0/8] sdhci: Move real work out of an atomic context Matt Fleming
2010-07-15  6:02   ` Matt Fleming
2010-07-21 21:13 ` Andrew Morton
2010-07-21 21:13   ` Andrew Morton
2010-09-07 22:38 ` Andrew Morton
2010-09-07 22:38   ` Andrew Morton
2010-09-08 21:37   ` Chris Ball
2010-09-08 21:37     ` Chris Ball
2010-09-08 21:57     ` Anton Vorontsov
2010-09-08 21:57       ` Anton Vorontsov
2010-09-08 22:05       ` Chris Ball
2010-09-08 22:05         ` Chris Ball
2010-09-08 22:27         ` Anton Vorontsov
2010-09-08 22:27           ` Anton Vorontsov
2010-09-09  2:28     ` Chris Ball
2010-09-09  2:28       ` Chris Ball
2010-09-09  7:15       ` Anton Vorontsov
2010-09-09  7:15         ` Anton Vorontsov
  -- strict thread matches above, loose matches on Subject: below --
2013-05-24 16:00 Jeremie Samuel
2013-05-24 16:00 ` [PATCH 7/8] sdhci: Get rid of mdelay()s where it is safe and makes sense Jeremie Samuel
2013-07-09 15:44 [PATCH 0/8] sdhci: Move real work out of an atomic context Jeremie Samuel
2013-07-09 15:44 ` [PATCH 7/8] sdhci: Get rid of mdelay()s where it is safe and makes sense Jeremie Samuel
2013-10-16 16:20 [PATCH 0/8] sdhci: Move real work out of an atomic context Jeremie Samuel
2013-10-16 16:20 ` [PATCH 7/8] sdhci: Get rid of mdelay()s where it is safe and makes sense Jeremie Samuel

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