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pinctrl: disallow map table entries with NULL dev_name field

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Hog entries are mapping table entries with .ctrl_dev_name == .dev_name.
All other mapping table entries need .dev_name set so that they will
match some pinctrl_get() call. All extant PIN_MAP*() macros set
.dev_name.

So, there is no reason to allow mapping table entries without .dev_name
set. Update the code and documentation to disallow this.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Stephen Warren
2012-02-22 14:25:58 -07:00
committed by Linus Walleij
parent f7b9006f45
commit 1681f5ae4c
3 changed files with 27 additions and 68 deletions
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include/linux/pinctrl/machine.h
-7
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@@ -45,13 +45,6 @@ struct pinctrl_map {
#define PIN_MAP(a, b, c, d) \
{ .name = a, .ctrl_dev_name = b, .function = c, .dev_name = d }
/*
* Convenience macro to map a system function onto a certain pinctrl device.
* System functions are not assigned to a particular device.
*/
#define PIN_MAP_SYS(a, b, c) \
{ .name = a, .ctrl_dev_name = b, .function = c }
/*
* Convenience macro to map a system function onto a certain pinctrl device,
* to be hogged by the pin control core until the system shuts down.