linux/drivers/i2c, branch v3.12

i2c: i2c-mux-pinctrl: use deferred probe when adapter not found

2013-10-10T08:22:35Z

If it is not there yet, it might appear later. Signed-off-by: Wolfram Sang

i2c: i2c-arb-gpio-challenge: use deferred probe when adapter not found

2013-10-10T08:22:34Z

If it is not there yet, it might appear later. Signed-off-by: Wolfram Sang

i2c: i2c-mux-gpio: use deferred probing

2013-10-10T08:22:33Z

If the i2c-parent bus driver is not loaded, returning -ENODEV will force people to unload and then reload the module again to get it working. Signed-off-by: Ionut Nicu Acked-by: Peter Korsgaard Signed-off-by: Wolfram Sang

i2c: i2c-mux-gpio: don't ignore of_get_named_gpio errors

2013-10-10T08:22:32Z

of_get_named_gpio could return -E_PROBE_DEFER or another error code. This error should be passed further instead of being ignored. Signed-off-by: Ionut Nicu Acked-by: Peter Korsgaard Signed-off-by: Wolfram Sang

i2c: omap: Clear ARDY bit twice

2013-10-10T08:22:32Z

Initially commit cb527ede1bf6ff2008a025606f25344b8ed7b4ac "i2c-omap: Double clear of ARDY status in IRQ handler" added a workaround for undocumented errata ProDB0017052. But then commit 1d7afc95946487945cc7f5019b41255b72224b70 "i2c: omap: ack IRQ in parts" refactored code and missed one of ARDY clearings. So current code violates errata. It causes often i2c bus timeouts on my Pandaboard. This patch adds a second clearing in place. Signed-off-by: Grygorii Strashko Signed-off-by: Taras Kondratiuk Signed-off-by: Wolfram Sang Cc: stable@kernel.org

i2c: Not all adapters have a parent

2013-10-10T08:22:31Z

The code in acpi_i2c_register_devices() assumes that all i2c adapters have a parent. This is not necessarily the case, for example the i2c-stub driver instantiate a virtual i2c adapter without a parent. Check for this to avoid a NULL pointer deference. Signed-off-by: Jean Delvare Acked-by: Mika Westerberg Signed-off-by: Wolfram Sang

i2c: i2c-stu300: replace platform_driver_probe to support deferred probing

2013-10-10T08:22:30Z

Subsystems like pinctrl and gpio rightfully make use of deferred probing at core level. Now, deferred drivers won't be retried if they don't have a .probe function specified in the driver struct. Fix this driver to have that, so the devices it supports won't get lost in a deferred probe. Acked-by: Linus Walleij Signed-off-by: Wolfram Sang

i2c: i2c-mxs: replace platform_driver_probe to support deferred probing

2013-10-10T08:22:29Z

i2c: i2c-imx: replace platform_driver_probe to support deferred probing

2013-10-10T08:22:29Z

i2c: i2c-designware-platdrv: replace platform_driver_probe to support deferred probing

2013-10-10T08:22:28Z

Subsystems like pinctrl and gpio rightfully make use of deferred probing at core level. Now, deferred drivers won't be retried if they don't have a .probe function specified in the driver struct. Fix this driver to have that, so the devices it supports won't get lost in a deferred probe. Reported-by: Zhangfei Gao Signed-off-by: Wolfram Sang