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

'a smiley only costs 4 bytes'


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