linux/drivers/base/regmap/regmap-debugfs.c, branch v3.9

Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux

2013-02-25T23:41:43Z

Pull module update from Rusty Russell: "The sweeping change is to make add_taint() explicitly indicate whether to disable lockdep, but it's a mechanical change." * tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: MODSIGN: Add option to not sign modules during modules_install MODSIGN: Add -s option to sign-file MODSIGN: Specify the hash algorithm on sign-file command line MODSIGN: Simplify Makefile with a Kconfig helper module: clean up load_module a little more. modpost: Ignore ARC specific non-alloc sections module: constify within_module_* taint: add explicit flag to show whether lock dep is still OK. module: printk message when module signature fail taints kernel.

regmap: debugfs: Factor out debugfs_tot_len calc into a function

2013-02-11T11:25:33Z

In preparation to support the regmap debugfs ranges functionality factor this code out to a separate function. We'll need to ensure that the value has been correctly calculated from two separate places in the code. Signed-off-by: Dimitris Papastamos Signed-off-by: Mark Brown

regmap: debugfs: Optimize seeking within blocks of registers

2013-02-11T11:25:33Z

Optimize this so that we can better guess where to start scanning from. We know the length of the register field format, therefore given the file pointer position align to the nearest register field and scan from there onwards. We round down in this calculation and we let the rest of the code figure out where to start scanning from. Signed-off-by: Dimitris Papastamos Signed-off-by: Mark Brown

regmap: debugfs: Add a `max_reg' member in struct regmap_debugfs_off_cache

2013-02-11T11:25:32Z

We are keeping track of the maximum register as well, this will make things easier for us in sharing this code with the code implementing the register ranges functionality. It also simplifies a bit the calculations when looking for the relevant block:offset from within the cache. Signed-off-by: Dimitris Papastamos Signed-off-by: Mark Brown

regmap: debugfs: Fix reading in register field units

2013-02-08T11:31:34Z

At the moment, if the length of the register field format is N bytes, we can only get anything meaningful back to userspace by providing a buffer that is N + 2 bytes large. Fix this so we that we only need to provide a buffer of N bytes. Signed-off-by: Dimitris Papastamos Signed-off-by: Mark Brown

regmap: regmap: avoid spurious warning in regmap_read_debugfs

2013-01-27T02:45:10Z

Gcc warns about the case where regmap_read_debugfs tries to walk an empty map->debugfs_off_cache list, which would results in uninitialized variable getting returned, if we hadn't checked the same condition just before that. After an originally suggested inferior patch from Arnd Bergmann, this is the solution that Russell King came up with, sidestepping the problem by merging the error case for an empty list with the normal path. Without this patch, building mxs_defconfig results in: drivers/base/regmap/regmap-debugfs.c: In function 'regmap_read_debugfs': drivers/base/regmap/regmap-debugfs.c:147:9: : warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized] Reported-by: Vincent Stehle Cc: Mark Brown Cc: Greg Kroah-Hartman Signed-off-by: Arnd Bergmann Signed-off-by: Mark Brown

taint: add explicit flag to show whether lock dep is still OK.

2013-01-21T06:47:57Z

Fix up all callers as they were before, with make one change: an unsigned module taints the kernel, but doesn't turn off lockdep. Signed-off-by: Rusty Russell

regmap: debugfs: Fix seeking from the cache

2013-01-16T15:33:36Z

We don't want to bomb out early if we failed to get the cache any more, just soldier on instead and we won't get confused and always return the first block. Reported-by: Philipp Zabel

regmap: debugfs: Make sure we store the last entry in the offset cache

2013-01-08T20:52:51Z

Signed-off-by: Mark Brown

regmap: debugfs: Ensure a correct return value for empty caches

2013-01-08T20:52:49Z

This should never happen in the real world. Signed-off-by: Mark Brown