From: Roman Moracik <roman.moravcik@gmail.com>
Date: Mon, 30 Jun 2008 21:40:28 +0000 (+0100)
Subject: MMC: Fix S3C24XX IRQ enable during PIO transfers
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d643b5f7e0793ef7828a35a5ea049d675ad2ad8c;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

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>
---

diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c
index 8c68b2e0dd6..774af3d7218 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;