From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Sun, 4 Feb 2018 18:57:43 +0000 (-0800)
Subject: Merge branch 'i2c/for-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa... 
X-Git-Tag: v4.19~1656
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4141cf676b9e345d3ddeb1710dd3156a09c50244;p=platform%2Fkernel%2Flinux-rpi.git

Merge branch 'i2c/for-4.16' of git://git./linux/kernel/git/wsa/linux

Pull i2c updates from Wolfram Sang:
 "I2C has the following changes for you:

   - new flag to mark DMA safe buffers in i2c_msg. Also, some
     infrastructure around it. And docs.

   - huge refactoring of the at24 driver led by the new maintainer
     Bartosz

   - update I2C bus recovery to send STOP after recovery

   - conversion from gpio to gpiod for I2C bus recovery

   - adding a fault-injector to the i2c-gpio driver

   - lots of small driver improvements, and bigger ones to
     i2c-sh_mobile"

* 'i2c/for-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (99 commits)
  i2c: mv64xxx: Add myself as maintainer for this driver
  i2c: mv64xxx: Fix clock resource by adding an optional bus clock
  i2c: mv64xxx: Remove useless test before clk_disable_unprepare
  i2c: mxs: use true and false for boolean values
  i2c: meson: update doc description to fix build warnings
  i2c: meson: add configurable divider factors
  dt-bindings: i2c: update documentation for the Meson-AXG
  i2c: imx-lpi2c: add runtime pm support
  i2c: rcar: fix some trivial typos in comments
  i2c: davinci: fix the cpufreq transition
  i2c: rk3x: add proper kerneldoc header
  i2c: rk3x: account for const type of of_device_id.data
  i2c: acorn: remove outdated path from file header
  i2c: acorn: add MODULE_LICENSE tag
  i2c: rcar: implement bus recovery
  i2c: send STOP after successful bus recovery
  i2c: ensure SDA is released in recovery if SDA is controllable
  i2c: add 'set_sda' to bus_recovery_info
  i2c: add identifier in declarations for i2c_bus_recovery
  i2c: make kerneldoc about bus recovery more precise
  ...
---

4141cf676b9e345d3ddeb1710dd3156a09c50244
diff --cc MAINTAINERS
index f3bac2a,1635fb9..e15f4e2
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@@ -6580,6 -6520,6 +6582,12 @@@ F:	drivers/i2c/i2c-mux.
  F:	drivers/i2c/muxes/
  F:	include/linux/i2c-mux.h
  
++I2C MV64XXX MARVELL AND ALLWINNER DRIVER
++M:	Gregory CLEMENT <gregory.clement@free-electrons.com>
++L:	linux-i2c@vger.kernel.org
++S:	Maintained
++F:	drivers/i2c/busses/i2c-mv64xxx.c
++
  I2C OVER PARALLEL PORT
  M:	Jean Delvare <jdelvare@suse.com>
  L:	linux-i2c@vger.kernel.org
diff --cc drivers/i2c/busses/i2c-designware-platdrv.c
index 153b947,6e0fd94..5660daf
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@@ -471,9 -430,16 +448,9 @@@ static int dw_i2c_plat_suspend(struct d
  {
  	struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);
  
 -	if (i_dev->suspended) {
 -		i_dev->skip_resume = true;
 -		return 0;
 -	}
 -
  	i_dev->disable(i_dev);
- 	i2c_dw_plat_prepare_clk(i_dev, false);
+ 	i2c_dw_prepare_clk(i_dev, false);
  
 -	i_dev->suspended = true;
 -
  	return 0;
  }
  
@@@ -481,9 -447,19 +458,9 @@@ static int dw_i2c_plat_resume(struct de
  {
  	struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);
  
- 	i2c_dw_plat_prepare_clk(i_dev, true);
 -	if (!i_dev->suspended)
 -		return 0;
 -
 -	if (i_dev->skip_resume) {
 -		i_dev->skip_resume = false;
 -		return 0;
 -	}
 -
+ 	i2c_dw_prepare_clk(i_dev, true);
  	i_dev->init(i_dev);
  
 -	i_dev->suspended = false;
 -
  	return 0;
  }
  
diff --cc drivers/i2c/i2c-core-smbus.c
index a1082c0,1238c94..59d5cf3
--- a/drivers/i2c/i2c-core-smbus.c
+++ b/drivers/i2c/i2c-core-smbus.c
@@@ -395,21 -418,24 +418,25 @@@ static s32 i2c_smbus_xfer_emulated(stru
  		msg[1].flags |= I2C_M_RECV_LEN;
  		msg[1].len = 1; /* block length will be added by
  				   the underlying bus driver */
+ 		i2c_smbus_try_get_dmabuf(&msg[1], 0);
  		break;
  	case I2C_SMBUS_I2C_BLOCK_DATA:
 +		if (data->block[0] > I2C_SMBUS_BLOCK_MAX) {
 +			dev_err(&adapter->dev, "Invalid block %s size %d\n",
 +				read_write == I2C_SMBUS_READ ? "read" : "write",
 +				data->block[0]);
 +			return -EINVAL;
 +		}
 +
  		if (read_write == I2C_SMBUS_READ) {
  			msg[1].len = data->block[0];
+ 			i2c_smbus_try_get_dmabuf(&msg[1], 0);
  		} else {
  			msg[0].len = data->block[0] + 1;
 -			if (msg[0].len > I2C_SMBUS_BLOCK_MAX + 1) {
 -				dev_err(&adapter->dev,
 -					"Invalid block write size %d\n",
 -					data->block[0]);
 -				return -EINVAL;
 -			}
+ 
+ 			i2c_smbus_try_get_dmabuf(&msg[0], command);
  			for (i = 1; i <= data->block[0]; i++)
- 				msgbuf0[i] = data->block[i];
+ 				msg[0].buf[i] = data->block[i];
  		}
  		break;
  	default: