MMC: Fix S3C24XX IRQ enable during PIO transfers

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

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c
index 8c68b2e0dd6e..774af3d7218f 100644
--- a/drivers/mmc/host/s3cmci.c
+++ b/drivers/mmc/host/s3cmci.c
@@ -335,6 +335,8 @@ static void pio_tasklet(unsigned long data)
         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 data)
                         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;