pm24.git/drivers/devfreq, branch v4.10-rc8

PM / devfreq: exynos-bus: Fix the wrong return value

2017-01-02T23:21:45Z

This patch fixes the wrong return value. If devfreq driver requires the wrong and non-available governor, it is fail. So, this patch returns the error insead of -EPROBE_DEFER. Fixes: 403e0689d2a9 (PM / devfreq: exynos: Add support of bus frequency of sub-blocks using passive governor) Signed-off-by: Chanwoo Choi Signed-off-by: Rafael J. Wysocki

PM / devfreq: Fix the bug of devfreq_add_device when governor is NULL

2017-01-02T23:21:45Z

This patch fixes the bug of devfreq_add_device(). The devfreq device must have the default governor. If find_devfreq_governor() returns error, devfreq_add_device() fail to add the devfreq instance. Fixes: 1b5c1be2c88e (PM / devfreq: map devfreq drivers to governor using name) Signed-off-by: Chanwoo Choi Signed-off-by: Rafael J. Wysocki

devfreq: rk3399_dmc: Don't use OPP structures outside of RCU locks

2016-12-08T00:46:07Z

The OPP structures are abused to the best here, without understanding how the OPP core and RCU locks work. In short, the OPP pointer saved in 'rk3399_dmcfreq' can become invalid under your nose, as the OPP core may free it. Fix various abuses around OPP structures and calls. Reviewed-by: Chanwoo Choi Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki

devfreq: rk3399_dmc: Remove dangling rcu_read_unlock()

2016-12-08T00:46:06Z

This call never had the rcu_read_lock() counterpart. Remove the unlock part as well. Signed-off-by: Viresh Kumar Reviewed-by: Chanwoo Choi Signed-off-by: Rafael J. Wysocki

devfreq: exynos: Don't use OPP structures outside of RCU locks

2016-12-08T00:46:06Z

The OPP structures are abused to the best here, without understanding how the OPP core and RCU locks work. In short, the OPP pointer saved 'struct exynos_bus' can become invalid under your nose, as the OPP core may free it. Fix various abuses around OPP structures and calls. Signed-off-by: Viresh Kumar Acked-by: Chanwoo Choi Tested-by: Chanwoo Choi Signed-off-by: Rafael J. Wysocki

PM / devfreq: rk3399_dmc: Use the resource-managed function to add devfreq dev

2016-11-17T02:31:29Z

This patch uses the resource-managed to add the devfreq device. This function will make it easy to handle the devfreq device. - struct devfreq *devm_devfreq_add_device(struct device *dev, struct devfreq_dev_profile *profile, const char *governor_name, void *data); Signed-off-by: Chanwoo Choi Signed-off-by: MyungJoo Ham

PM / devfreq: correct comment typo.

2016-11-17T02:31:28Z

The function name in the comment was incorrect. Signed-off-by: MyungJoo Ham Reviewed-by: Chanwoo Choi

PM / devfreq: exynos-ppmu: Remove unused mutex from struct exynos_ppmu

2016-11-17T02:31:28Z

The mutex is not used at all, remove it. Signed-off-by: Axel Lin Acked-by: Chanwoo Choi Signed-off-by: MyungJoo Ham

PM / devfreq: exynos-ppmu: ppmu_events array should not be NULL terminated

2016-11-17T02:31:28Z

The rest of the code uses ARRAY_SIZE to count the number of entries in ppmu_events array. The NULL terminated entry makes ARRAY_SIZE return off-by-one value. Signed-off-by: Axel Lin Acked-by: Chanwoo Choi Signed-off-by: MyungJoo Ham

PM / devfreq: exynos-ppmu: Fix module autoload

2016-11-17T02:31:28Z

If the driver is built as a module, autoload won't work because the module alias information is not filled. So user-space can't match the registered device with the corresponding module. Export the module alias information using the MODULE_DEVICE_TABLE() macro. Before this patch: $ modinfo drivers/devfreq/event/exynos-ppmu.ko | grep alias $ After this patch: $ modinfo drivers/devfreq/event/exynos-ppmu.ko | grep alias alias: of:N*T*Csamsung,exynos-ppmu-v2C* alias: of:N*T*Csamsung,exynos-ppmu-v2 alias: of:N*T*Csamsung,exynos-ppmuC* alias: of:N*T*Csamsung,exynos-ppmu Signed-off-by: Javier Martinez Canillas Signed-off-by: MyungJoo Ham