Commit 6d16db00 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 

Pull i2c fixes from Wolfram Sang:
 "A bunch of driver bugfixes and a MAINTAINERS addition"

* 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  MAINTAINERS: add entry for STM32 I2C driver
  i2c: viperboard: return message count on master_xfer success
  i2c: pmcmsp: fix error return from master_xfer
  i2c: pmcmsp: return message count on master_xfer success
  i2c: designware: fix poll-after-enable regression
  eeprom: at24: fix retrieving the at24_chip_data structure
  i2c: core: ACPI: Log device not acking errors at dbg loglevel
  i2c: core: ACPI: Improve OpRegion read errors
parents 2c71d338 22aac3eb

MAINTAINERS

+6 −0
Original line number Diff line number Diff line
@@ -13264,6 +13264,12 @@ M: Jan-Benedict Glaw <jbglaw@lug-owl.de> 
S:	Maintained

F:	arch/alpha/kernel/srm_env.c



ST STM32 I2C/SMBUS DRIVER

M:	Pierre-Yves MORDRET <pierre-yves.mordret@st.com>

L:	linux-i2c@vger.kernel.org

S:	Maintained

F:	drivers/i2c/busses/i2c-stm32*



STABLE BRANCH

M:	Greg Kroah-Hartman <gregkh@linuxfoundation.org>

L:	stable@vger.kernel.org

drivers/i2c/busses/i2c-designware-master.c

+4 −1
Original line number Diff line number Diff line
@@ -209,7 +209,10 @@ static void i2c_dw_xfer_init(struct dw_i2c_dev *dev) 
	i2c_dw_disable_int(dev);



	/* Enable the adapter */

	__i2c_dw_enable_and_wait(dev, true);

	__i2c_dw_enable(dev, true);



	/* Dummy read to avoid the register getting stuck on Bay Trail */

	dw_readl(dev, DW_IC_ENABLE_STATUS);



	/* Clear and enable interrupts */

	dw_readl(dev, DW_IC_CLR_INTR);

drivers/i2c/busses/i2c-pmcmsp.c

+2 −2
Original line number Diff line number Diff line
@@ -564,10 +564,10 @@ static int pmcmsptwi_master_xfer(struct i2c_adapter *adap, 
		 * TODO: We could potentially loop and retry in the case

		 * of MSP_TWI_XFER_TIMEOUT.

		 */

		return -1;

		return -EIO;

	}



	return 0;

	return num;

}



static u32 pmcmsptwi_i2c_func(struct i2c_adapter *adapter)

drivers/i2c/busses/i2c-viperboard.c

+1 −1
Original line number Diff line number Diff line
@@ -337,7 +337,7 @@ static int vprbrd_i2c_xfer(struct i2c_adapter *i2c, struct i2c_msg *msgs, 
		}

		mutex_unlock(&vb->lock);

	}

	return 0;

	return num;

error:

	mutex_unlock(&vb->lock);

	return error;

drivers/i2c/i2c-core-acpi.c

+10 −3
Original line number Diff line number Diff line
@@ -445,10 +445,17 @@ static int acpi_gsb_i2c_read_bytes(struct i2c_client *client, 
	msgs[1].buf = buffer;



	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));

	if (ret < 0)

		dev_err(&client->adapter->dev, "i2c read failed\n");

	if (ret < 0) {

		/* Getting a NACK is unfortunately normal with some DSTDs */

		if (ret == -EREMOTEIO)

			dev_dbg(&client->adapter->dev, "i2c read %d bytes from client@%#x starting at reg %#x failed, error: %d\n",

				data_len, client->addr, cmd, ret);

		else

			dev_err(&client->adapter->dev, "i2c read %d bytes from client@%#x starting at reg %#x failed, error: %d\n",

				data_len, client->addr, cmd, ret);

	} else {

		memcpy(data, buffer, data_len);

	}



	kfree(buffer);

	return ret;

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