i2c: designware: fix IO timeout issue for AMD controller

[cascardo/linux.git] / drivers / i2c / busses / i2c-designware-platdrv.c

diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index 809579e..f03ea71 100644 (file)
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -93,6 +93,7 @@ static void dw_i2c_acpi_params(struct platform_device *pdev, char method[],
 static int dw_i2c_acpi_configure(struct platform_device *pdev)
 {
        struct dw_i2c_dev *dev = platform_get_drvdata(pdev);
+       const struct acpi_device_id *id;
 
        dev->adapter.nr = -1;
        dev->tx_fifo_depth = 32;
@@ -106,6 +107,10 @@ static int dw_i2c_acpi_configure(struct platform_device *pdev)
        dw_i2c_acpi_params(pdev, "FMCN", &dev->fs_hcnt, &dev->fs_lcnt,
                           &dev->sda_hold_time);
 
+       id = acpi_match_device(pdev->dev.driver->acpi_match_table, &pdev->dev);
+       if (id && id->driver_data)
+               dev->accessor_flags |= (u32)id->driver_data;
+
        return 0;
 }
 
@@ -116,7 +121,7 @@ static const struct acpi_device_id dw_i2c_acpi_match[] = {
        { "INT3433", 0 },
        { "80860F41", 0 },
        { "808622C1", 0 },
-       { "AMD0010", 0 },
+       { "AMD0010", ACCESS_INTR_MASK },
        { }
 };
 MODULE_DEVICE_TABLE(acpi, dw_i2c_acpi_match);