linux/drivers/base/regmap/regmap-debugfs.c, branch v4.3

regmap: debugfs: Don't bother actually printing when calculating max length

2015-09-19T14:38:12Z

The in kernel snprintf() will conveniently return the actual length of the printed string even if not given an output beffer at all so just do that rather than relying on the user to pass in a suitable buffer, ensuring that we don't need to worry if the buffer was truncated due to the size of the buffer passed in. Reported-by: Rasmus Villemoes Signed-off-by: Mark Brown Cc: stable@vger.kernel.org

regmap: debugfs: Ensure we don't underflow when printing access masks

2015-09-19T14:38:11Z

If a read is attempted which is smaller than the line length then we may underflow the subtraction we're doing with the unsigned size_t type so move some of the calculation to be additions on the right hand side instead in order to avoid this. Reported-by: Rasmus Villemoes Signed-off-by: Mark Brown Cc: stable@vger.kernel.org

regmap: debugfs: Fix misuse of IS_ENABLED

2015-08-07T12:31:58Z

IS_ENABLED should only be used for CONFIG_* symbols. I have done a small test: #define REGMAP_ALLOW_WRITE_DEBUGFS IS_ENABLED(REGMAP_ALLOW_WRITE_DEBUGFS) returns 0. #define REGMAP_ALLOW_WRITE_DEBUGFS 0 IS_ENABLED(REGMAP_ALLOW_WRITE_DEBUGFS) returns 0. #define REGMAP_ALLOW_WRITE_DEBUGFS 1 IS_ENABLED(REGMAP_ALLOW_WRITE_DEBUGFS) returns 1. #define REGMAP_ALLOW_WRITE_DEBUGFS 2 IS_ENABLED(REGMAP_ALLOW_WRITE_DEBUGFS) returns 0. So fix the misuse of IS_ENABLED(REGMAP_ALLOW_WRITE_DEBUGFS) and switch to use #if defined(REGMAP_ALLOW_WRITE_DEBUGFS) instead. Signed-off-by: Axel Lin Signed-off-by: Mark Brown

regmap: debugfs: Allow writes to cache state settings

2015-07-20T17:45:00Z

Allow the user to write the cache_only and cache_bypass settings. This can be useful for debugging. Since this can lead to the hardware getting out-of-sync with the cache, at least for the period that the cache state is forced, the kernel is tainted and the action is recorded in the kernel log. When disabling cache_only through debugfs a cache sync will be performed. Signed-off-by: Richard Fitzgerald Signed-off-by: Mark Brown

Merge remote-tracking branch 'regmap/fix/debugfs' into regmap-linus

2014-09-29T19:49:40Z

regmap: Fix debugfs-file 'registers' mode

2014-09-29T17:22:26Z

The macro "REGMAP_ALLOW_WRITE_DEBUGFS" can be used to enable write support on the registers file in the debugfs. The mode of the file is fixed to 0400 so it is not possible to write the file ever. This patch fixes the mode by setting it to the correct value depending on the macro. Signed-off-by: Markus Pargmann Signed-off-by: Mark Brown

regmap: debugfs: fix possbile NULL pointer dereference

2014-09-28T10:49:56Z

If 'map->dev' is NULL and there will lead dev_name() to be NULL pointer dereference. So before dev_name(), we need to have check of the map->dev pionter. We also should make sure that the 'name' pointer shouldn't be NULL for debugfs_create_dir(). So here using one default "dummy" debugfs name when the 'name' pointer and 'map->dev' are both NULL. Signed-off-by: Xiubo Li Signed-off-by: Mark Brown Cc: stable@vger.kernel.org

Merge tag 'regmap-v3.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

2014-09-15T23:20:56Z

Pull regmap fix from Mark Brown: "Fix registers file in debugfs Ensure that the mode reported for the registers file in debugfs is accurate by marking it as read only when the define to enable writes has not been set. This is on the edge of being a bug fix but it's debugfs and it makes it much easier for users to spot what's going wrong when they forget to enable writeability" * tag 'regmap-v3.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: regmap: Fix debugfs-file 'registers' mode

regmap: Fix debugfs-file 'registers' mode

2014-09-08T11:16:19Z

regmap: Fix regcache debugfs initialization

2014-08-26T08:11:56Z

Commit 6cfec04bcc05 ("regmap: Separate regmap dev initialization") moved the regmap debugfs initialization after regcache initialization. This means that the regmap debugfs directory is not created yet when the cache initialization runs and so any debugfs files registered by the regcache are created in the debugfs root directory rather than the debugfs directory of the regmap instance. Fix this by adding a separate callback for the regcache debugfs initialization which will be called after the parent debugfs entry has been created. Fixes: 6cfec04bcc05 (regmap: Separate regmap dev initialization) Signed-off-by: Lars-Peter Clausen Signed-off-by: Mark Brown Cc: stable@vger.kernel.org