From 9e9430213f85ebdaf40026ec790295420efd0f91 Mon Sep 17 00:00:00 2001
From: Linus Walleij <triad@df.lth.se>
Date: Fri, 24 Oct 2008 21:17:50 +0100
Subject: [PATCH] [ARM] 5322/1: Fix fastpath issue in mmci.c
Fix fastpath issues
Since mmci_request() can be called from a non-interrupt
context, and does, during kernel init, causing a host
of debug messages during boot if you enable spinlock debugging,
we need to use the spinlock calls that save IRQ flags and
restore them.
Signed-off-by: Linus Walleij <triad@df.lth.se>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
drivers/mmc/host/mmci.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 696cf3647ceb3..2fadf323c696d 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -391,6 +391,7 @@ static irqreturn_t mmci_irq(int irq, void *dev_id)
static void mmci_request(struct mmc_host *mmc, struct mmc_request *mrq)
{
struct mmci_host *host = mmc_priv(mmc);
+ unsigned long flags;
WARN_ON(host->mrq != NULL);
@@ -402,7 +403,7 @@ static void mmci_request(struct mmc_host *mmc, struct mmc_request *mrq)
return;
}
- spin_lock_irq(&host->lock);
+ spin_lock_irqsave(&host->lock, flags);
host->mrq = mrq;
@@ -411,7 +412,7 @@ static void mmci_request(struct mmc_host *mmc, struct mmc_request *mrq)
mmci_start_command(host, mrq->cmd, 0);
- spin_unlock_irq(&host->lock);
+ spin_unlock_irqrestore(&host->lock, flags);
}
static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
--
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