linux/drivers/i2c, branch v4.2

i2c: fix leaked device refcount on of_find_i2c_* error path

2015-08-01T10:11:58Z

If of_find_i2c_device_by_node() or of_find_i2c_adapter_by_node() find a device by node, but its type does not match, a reference to that device is still held. This change fixes the problem. Signed-off-by: Vladimir Zapolskiy Signed-off-by: Wolfram Sang

i2c: Fix typo in i2c-bfin-twi.c

2015-07-31T11:32:31Z

This patch fix some typos found in a printk message and MODULE_DESCRIPTION. Signed-off-by: Masanari Iida Acked-by: Sonic Zhang Signed-off-by: Wolfram Sang

i2c: omap: fix bus recovery setup

2015-07-31T11:32:31Z

At least on the AM335x, enabling OMAP_I2C_SYSTEST_ST_EN is not enough to allow direct access to the SCL and SDA pins. In addition to ST_EN, we need to set the TMODE to 0b11 (Loop back & SDA/SCL IO mode select). Also, as the reset values of SCL_O and SDA_O are 0 (which means "drive low level"), we need to set them to 1 (which means "high-impedance") to avoid unwanted changes on the pins. As a precaution, reset all these bits to their default values after recovery is complete. Signed-off-by: Jan Luebbe Tested-by: Alexander Sverdlin Reviewed-by: Grygorii Strashko Signed-off-by: Wolfram Sang

i2c: core: only use set_scl for bus recovery after calling prepare_recovery

2015-07-31T11:32:31Z

Using set_scl may be ineffective before calling the driver specific prepare_recovery callback, which might change into a test mode. So instead of setting SCL in i2c_generic_scl_recovery, move it to i2c_generic_recovery (after the optional prepare_recovery). Signed-off-by: Jan Luebbe Acked-by: Alexander Sverdlin Tested-by: Alexander Sverdlin Signed-off-by: Wolfram Sang

i2c: slave eeprom: clean up sysfs bin attribute read()/write()

2015-07-31T11:32:30Z

The change removes redundant sysfs binary file boundary checks, since this task is already done on caller side in fs/sysfs/file.c Note, on file size overflow read() now returns 0, and this is a correct and expected EOF notification according to POSIX. Signed-off-by: Vladimir Zapolskiy Signed-off-by: Wolfram Sang

i2c: Mark instantiated device nodes with OF_POPULATE

2015-07-09T20:25:54Z

Mark (and unmark) device nodes with the POPULATE flag as appropriate. This is required to avoid multi probing when using I2C and device overlays containing a mux. This patch is also more careful with the release of the adapter device which caused a deadlock with muxes, and does not break the build on !OF since the node flag accessors are not defined then. Signed-off-by: Pantelis Antoniou Signed-off-by: Wolfram Sang

i2c: jz4780: Fix return value if probe fails

2015-07-09T20:17:31Z

Current code returns 0 if fails to read clock-frequency DT property, fix it. Also add checking return value of clk_prepare_enable and propagate return value of devm_request_irq. Signed-off-by: Axel Lin Signed-off-by: Wolfram Sang

i2c: xgene-slimpro: Fix missing mbox_free_channel call in probe error path

2015-07-09T20:13:10Z

Free requested mailbox channel before return error. Signed-off-by: Axel Lin Signed-off-by: Wolfram Sang

i2c: I2C_MT65XX should depend on HAS_DMA

2015-07-09T20:10:20Z

If NO_DMA=y: ERROR: "dma_unmap_single" [drivers/i2c/busses/i2c-mt65xx.ko] undefined! ERROR: "dma_mapping_error" [drivers/i2c/busses/i2c-mt65xx.ko] undefined! ERROR: "dma_map_single" [drivers/i2c/busses/i2c-mt65xx.ko] undefined! Add a dependency on HAS_DMA to fix this. Signed-off-by: Geert Uytterhoeven Signed-off-by: Wolfram Sang

Merge tag 'char-misc-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2015-06-26T21:51:15Z

Pull char/misc driver updates from Greg KH: "Here's the big char/misc driver pull request for 4.2-rc1. Lots of mei, extcon, coresight, uio, mic, and other driver updates in here. Full details in the shortlog. All of these have been in linux-next for some time with no reported problems" * tag 'char-misc-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (176 commits) mei: me: wait for power gating exit confirmation mei: reset flow control on the last client disconnection MAINTAINERS: mei: add mei_cl_bus.h to maintained file list misc: sram: sort and clean up included headers misc: sram: move reserved block logic out of probe function misc: sram: add private struct device and virt_base members misc: sram: report correct SRAM pool size misc: sram: bump error message level on unclean driver unbinding misc: sram: fix device node reference leak on error misc: sram: fix enabled clock leak on error path misc: mic: Fix reported static checker warning misc: mic: Fix randconfig build error by including errno.h uio: pruss: Drop depends on ARCH_DAVINCI_DA850 from config uio: pruss: Add CONFIG_HAS_IOMEM dependence uio: pruss: Include extcon: Redefine the unique id of supported external connectors without 'enum extcon' type char:xilinx_hwicap:buffer_icap - change 1/0 to true/false for bool type variable in function buffer_icap_set_configuration(). Drivers: hv: vmbus: Allocate ring buffer memory in NUMA aware fashion parport: check exclusive access before register w1: use correct lock on error in w1_seq_show() ...