diff --git a/drivers/i2c/busses/i2c-designware-master.c b/drivers/i2c/busses/i2c-designware-master.c
index d464799e40a3..4048a66355f6 100644
--- a/drivers/i2c/busses/i2c-designware-master.c
+++ b/drivers/i2c/busses/i2c-designware-master.c
@@ -9,6 +9,7 @@
* Copyright (C) 2009 Provigent Ltd.
*/
#include <linux/delay.h>
+#include <linux/dmi.h>
#include <linux/err.h>
#include <linux/errno.h>
#include <linux/export.h>
@@ -22,6 +23,25 @@
#include "i2c-designware-core.h"
+static int no_runtime_pm;
+static const struct dmi_system_id i2c_dw_no_runtime_pm[] = {
+ {
+ .ident = "Dell Inspiron 5390",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5390"),
+ },
+ },
+ {
+ .ident = "Dell Vostro 5390",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 5390"),
+ },
+ },
+ { }
+};
+
static void i2c_dw_configure_fifo_master(struct dw_i2c_dev *dev)
{
/* Configure Tx/Rx FIFO threshold levels */
@@ -424,7 +444,8 @@ i2c_dw_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num)
dev_dbg(dev->dev, "%s: msgs: %d\n", __func__, num);
- pm_runtime_get_sync(dev->dev);
+ if (!no_runtime_pm)
+ pm_runtime_get_sync(dev->dev);
if (dev_WARN_ONCE(dev->dev, dev->suspended, "Transfer while suspended\n")) {
ret = -ESHUTDOWN;
@@ -501,7 +522,8 @@ i2c_dw_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num)
done_nolock:
pm_runtime_mark_last_busy(dev->dev);
- pm_runtime_put_autosuspend(dev->dev);
+ if (!no_runtime_pm)
+ pm_runtime_put_autosuspend(dev->dev);
return ret;
}
@@ -733,6 +755,10 @@ int i2c_dw_probe(struct dw_i2c_dev *dev)
if (ret)
return ret;
+ no_runtime_pm = dmi_check_system(i2c_dw_no_runtime_pm);
+ if (no_runtime_pm)
+ __pm_runtime_disable(dev->dev, true);
+
/*
* Increment PM usage count during adapter registration in order to
* avoid possible spurious runtime suspend when adapter device is
Text paste