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path: root/drivers/mailbox/mailbox-test.c
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Diffstat (limited to 'drivers/mailbox/mailbox-test.c')
-rw-r--r--drivers/mailbox/mailbox-test.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/mailbox/mailbox-test.c b/drivers/mailbox/mailbox-test.c
index 383a8b7600ac..9c79f8019d2a 100644
--- a/drivers/mailbox/mailbox-test.c
+++ b/drivers/mailbox/mailbox-test.c
@@ -352,6 +352,7 @@ static int mbox_test_probe(struct platform_device *pdev)
{
struct mbox_test_device *tdev;
struct resource *res;
+ resource_size_t size;
int ret;
tdev = devm_kzalloc(&pdev->dev, sizeof(*tdev), GFP_KERNEL);
@@ -360,14 +361,21 @@ static int mbox_test_probe(struct platform_device *pdev)
/* It's okay for MMIO to be NULL */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ size = resource_size(res);
tdev->tx_mmio = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(tdev->tx_mmio))
+ if (PTR_ERR(tdev->tx_mmio) == -EBUSY)
+ /* if reserved area in SRAM, try just ioremap */
+ tdev->tx_mmio = devm_ioremap(&pdev->dev, res->start, size);
+ else if (IS_ERR(tdev->tx_mmio))
tdev->tx_mmio = NULL;
/* If specified, second reg entry is Rx MMIO */
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ size = resource_size(res);
tdev->rx_mmio = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(tdev->rx_mmio))
+ if (PTR_ERR(tdev->rx_mmio) == -EBUSY)
+ tdev->rx_mmio = devm_ioremap(&pdev->dev, res->start, size);
+ else if (IS_ERR(tdev->rx_mmio))
tdev->rx_mmio = tdev->tx_mmio;
tdev->tx_channel = mbox_test_request_channel(pdev, "tx");

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