[patch v4 06/17] MMC: Fix S3C24XX IRQ enable during PIO transfers

[Ben Dooks <ben-linux@fluff.org>]

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From: Roman Moracik <roman.moravcik@gmail.com> 

Fix Bug #677 - I/O errors on heavy microSD writes for 2.6.22.x.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

Index: linux-2.6.26-rc8-next20080627/drivers/mmc/host/s3cmci.c
===================================================================
--- linux-2.6.26-rc8-next20080627.orig/drivers/mmc/host/s3cmci.c	2008-06-30 12:19:15.000000000 +0100
+++ linux-2.6.26-rc8-next20080627/drivers/mmc/host/s3cmci.c	2008-06-30 12:19:16.000000000 +0100
@@ -335,6 +335,8 @@ static void pio_tasklet(unsigned long da
 	struct s3cmci_host *host = (struct s3cmci_host *) data;
 
 
+	disable_irq(host->irq);
+
 	if (host->pio_active == XFER_WRITE)
 		do_pio_write(host);
 
@@ -352,9 +354,9 @@ static void pio_tasklet(unsigned long da
 			host->mrq->data->error = -EINVAL;
 		}
 
-		disable_irq(host->irq);
 		finalize_request(host);
-	}
+	} else
+		enable_irq(host->irq);
 }
 
 /*
@@ -630,7 +632,6 @@ out:
 	spin_unlock_irqrestore(&host->complete_lock, iflags);
 	return;
 
-
 fail_request:
 	host->mrq->data->error = -EINVAL;
 	host->complete_what = COMPLETION_FINALIZE;

-- 
Ben (ben@fluff.org, http://www.fluff.org/)

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