Merge tag 'mfd-for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "Changes to existing drivers:
   - Constify structures; throughout the subsystem
   - Move support to DT in; cros_ec
   - DT changes and documentation; cros-ec, max77693, max77686, arizona, da9063
   - ACPI changes and documentation; mfd-core
   - Use different platform specific API in; cros_ec_*, arizona-core
   - Remove unused parent field from; cros_ec_i2c
   - Add wake-up/reset delay in; cross_ec_spi, arizona-core
   - Staticise structures/functions in; cros_ec
   - Remove redundant code; arizona-core, max77686
   - Bugfix; twl4030-power
   - Allow compile test; aat2870, tps65910
   - MAINTAINERS adaptions; samsung, syscon
   - Resource Management (devm_*); arizona-core
   - Refactor Reset code; arizona-core
   - Insist on at least one full boot; arizona-core
   - Trivial formatting; arizona-core
   - Add low-power-sleep; arizona-core
   - IRQ ONESHOT changes; twl4030-irq, mc13xxx-core, wm831x-auxadc, htc-i2cpld,
                          wm8350-core, ab8500-debugfs, ab8500-gpadc, si476x-i2c

  (Re-)moved drivers:
   - Move protocol helpers out to drivers/platform; cros_ec

  New drivers/supported devices:
   - Add support for AXP22x into axp20x
   - Add support for OnKey into da9063-core
   - Add support for Pinctrl into mt6397-core
   - New STMicroelectronics LPC Watchdog driver
   - New STMicroelectronics LPC Real-Time Clock driver"

* tag 'mfd-for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (59 commits)
  mfd: lpc_ich: Assign subdevice ids automatically
  mfd: si476x-i2c: Pass the IRQF_ONESHOT flag
  mfd: ab8500-gpadc: Pass the IRQF_ONESHOT flag
  mfd: ab8500-debugfs: Pass the IRQF_ONESHOT flag
  mfd: wm8350-core: Pass the IRQF_ONESHOT flag
  mfd: htc-i2cpld: Pass the IRQF_ONESHOT flag
  mfd: wm831x-auxadc: Pass the IRQF_ONESHOT flag
  mfd: mc13xxx-core: Pass the IRQF_ONESHOT flag
  mfd: twl4030-irq: Pass the IRQF_ONESHOT flag
  mfd: mt6397-core: Add GPIO sub-module support
  mfd: arizona: Add convience defines for micd_rate/micd_bias_starttime
  mfd: dt: Add bindings for DA9063 OnKey
  mfd: da9063: Add support for OnKey driver
  mfd: arizona: Fix incorrect Makefile conditionals
  mfd: arizona: Add stub for wm5102_patch()
  mfd: Check ACPI device companion before checking resources
  Documentation: Add WM8998/WM1814 device tree bindings
  mfd: arizona: Split INx_MODE into two fields
  mfd: wm5110: Add delay before releasing reset line
  mfd: arizona: Add better support for system suspend
  ...

1 files changed, 30 insertions, 15 deletions

diff --git a/drivers/i2c/busses/i2c-cros-ec-tunnel.c b/drivers/i2c/busses/i2c-cros-ec-tunnel.c
index fa8dedd8c3a2..a0d95ff682ae 100644
--- a/drivers/i2c/busses/i2c-cros-ec-tunnel.c
+++ b/drivers/i2c/busses/i2c-cros-ec-tunnel.c
@@ -182,8 +182,9 @@ static int ec_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg i2c_msgs[],
 	const u16 bus_num = bus->remote_bus;
 	int request_len;
 	int response_len;
+	int alloc_size;
 	int result;
-	struct cros_ec_command msg = { };
+	struct cros_ec_command *msg;
 
 	request_len = ec_i2c_count_message(i2c_msgs, num);
 	if (request_len < 0) {
@@ -198,25 +199,39 @@ static int ec_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg i2c_msgs[],
 		return response_len;
 	}
 
-	result = ec_i2c_construct_message(msg.outdata, i2c_msgs, num, bus_num);
-	if (result)
-		return result;
+	alloc_size = max(request_len, response_len);
+	msg = kmalloc(sizeof(*msg) + alloc_size, GFP_KERNEL);
+	if (!msg)
+		return -ENOMEM;
 
-	msg.version = 0;
-	msg.command = EC_CMD_I2C_PASSTHRU;
-	msg.outsize = request_len;
-	msg.insize = response_len;
+	result = ec_i2c_construct_message(msg->data, i2c_msgs, num, bus_num);
+	if (result) {
+		dev_err(dev, "Error constructing EC i2c message %d\n", result);
+		goto exit;
+	}
 
-	result = cros_ec_cmd_xfer(bus->ec, &msg);
-	if (result < 0)
-		return result;
+	msg->version = 0;
+	msg->command = EC_CMD_I2C_PASSTHRU;
+	msg->outsize = request_len;
+	msg->insize = response_len;
 
-	result = ec_i2c_parse_response(msg.indata, i2c_msgs, &num);
-	if (result < 0)
-		return result;
+	result = cros_ec_cmd_xfer(bus->ec, msg);
+	if (result < 0) {
+		dev_err(dev, "Error transferring EC i2c message %d\n", result);
+		goto exit;
+	}
+
+	result = ec_i2c_parse_response(msg->data, i2c_msgs, &num);
+	if (result < 0) {
+		dev_err(dev, "Error parsing EC i2c message %d\n", result);
+		goto exit;
+	}
 
 	/* Indicate success by saying how many messages were sent */
-	return num;
+	result = num;
+exit:
+	kfree(msg);
+	return result;
 }
 
 static u32 ec_i2c_functionality(struct i2c_adapter *adap)