diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 951fa9b..2a5a0b7 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -11,7 +11,7 @@
 
 config MFD_88PM860X
 	bool "Support Marvell 88PM8606/88PM8607"
-	depends on I2C=y
+	depends on I2C=y && GENERIC_HARDIRQS
 	select MFD_CORE
 	help
 	  This supports for Marvell 88PM8606/88PM8607 Power Management IC.
@@ -205,7 +205,7 @@
 
 config MFD_MAX8925
 	bool "Maxim Semiconductor MAX8925 PMIC Support"
-	depends on I2C=y
+	depends on I2C=y && GENERIC_HARDIRQS
 	select MFD_CORE
 	help
 	  Say yes here to support for Maxim Semiconductor MAX8925. This is
@@ -226,7 +226,7 @@
 config MFD_WM831X
 	bool "Support Wolfson Microelectronics WM831x/2x PMICs"
 	select MFD_CORE
-	depends on I2C=y
+	depends on I2C=y && GENERIC_HARDIRQS
 	help
 	  Support for the Wolfson Microelecronics WM831x and WM832x PMICs.
 	  This driver provides common support for accessing the device,
@@ -235,6 +235,7 @@
 
 config MFD_WM8350
 	bool
+	depends on GENERIC_HARDIRQS
 
 config MFD_WM8350_CONFIG_MODE_0
 	bool
@@ -287,7 +288,7 @@
 config MFD_WM8350_I2C
 	bool "Support Wolfson Microelectronics WM8350 with I2C"
 	select MFD_WM8350
-	depends on I2C=y
+	depends on I2C=y && GENERIC_HARDIRQS
 	help
 	  The WM8350 is an integrated audio and power management
 	  subsystem with watchdog and RTC functionality for embedded
diff --git a/drivers/mfd/sm501.c b/drivers/mfd/sm501.c
index ff0718e..7b6652f 100644
--- a/drivers/mfd/sm501.c
+++ b/drivers/mfd/sm501.c
@@ -1430,7 +1430,7 @@
 	}
 
 	sm->regs_claim = request_mem_region(sm->io_res->start,
-					    resource_size(sm->io_res), "sm501");
+					    0x100, "sm501");
 
 	if (sm->regs_claim == NULL) {
 		dev_err(&dev->dev, "cannot claim registers\n");
@@ -1644,7 +1644,7 @@
 	sm->mem_res = &dev->resource[0];
 
 	sm->regs_claim = request_mem_region(sm->io_res->start,
-					    resource_size(sm->io_res), "sm501");
+					    0x100, "sm501");
 	if (sm->regs_claim == NULL) {
 		dev_err(&dev->dev, "cannot claim registers\n");
 		err= -EBUSY;