sata_mv: remove iounmap in mv_platform_remove and use devm_iomap

this will fix crash bug when doing rmmod to the driver, this is because the
port_stop function get called later and it could access the device's registers.

Signed-off-by: Saeed Bishara <saeed@marvell.com>
Acked-by: Mark Lord <mlord@pobox.com>
Acked-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 2 insertions, 4 deletions

diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index eb97dde28d47..6ebebde8454a 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -2947,7 +2947,8 @@ static int mv_platform_probe(struct platform_device *pdev)
         hpriv->n_ports = n_ports;
 
         host->iomap = NULL;
-        hpriv->base = ioremap(res->start, res->end - res->start + 1);
+        hpriv->base = devm_ioremap(&pdev->dev, res->start,
+                                   res->end - res->start + 1);
         hpriv->base -= MV_SATAHC0_REG_BASE;
 
         rc = mv_create_dma_pools(hpriv, &pdev->dev);
@@ -2979,11 +2980,8 @@ static int __devexit mv_platform_remove(struct platform_device *pdev)
 {
         struct device *dev = &pdev->dev;
         struct ata_host *host = dev_get_drvdata(dev);
-        struct mv_host_priv *hpriv = host->private_data;
-        void __iomem *base = hpriv->base;
 
         ata_host_detach(host);
-        iounmap(base);
         return 0;
 }