diff options
| author | Stephen Boyd <sboyd@codeaurora.org> | 2016-01-06 17:12:47 -0800 |
|---|---|---|
| committer | Fenglin Wu <fenglinw@codeaurora.org> | 2016-08-30 14:59:38 +0800 |
| commit | 11f95b1a64f06c97ea053b9582c738eac3703c9a (patch) | |
| tree | 316fd6e0bf9bca1d4f7719d96b38b358a660511d /drivers/base/platform.c | |
| parent | e841045b426e9b204afb2f43da1ae4071f76923b (diff) | |
driver-core: platform: Add platform_irq_count()
A recent patch added calls to of_irq_count() in the qcom pinctrl
drivers and that caused module build failures because
of_irq_count() is not an exported symbol. We shouldn't export
of_irq_count() to modules because it's an internal OF API that
shouldn't be used by drivers. Platform drivers should use
platform device APIs instead. Therefore, add a platform_irq_count()
API that mirrors the of_irq_count() API so that platform drivers
can stay DT agnostic.
Change-Id: I34cfc11feb2fbc2acc41e3697006d86a3cad3445
Cc: Andy Gross <andy.gross@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Git-commit: 4b83555d5098e73cf2c5ca7f86c17ca0ba3b968e
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Signed-off-by: Fenglin Wu <fenglinw@codeaurora.org>
Diffstat (limited to 'drivers/base/platform.c')
| -rw-r--r-- | drivers/base/platform.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 176b59f5bc47..bd70f8db469b 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -117,6 +117,26 @@ int platform_get_irq(struct platform_device *dev, unsigned int num) EXPORT_SYMBOL_GPL(platform_get_irq); /** + * platform_irq_count - Count the number of IRQs a platform device uses + * @dev: platform device + * + * Return: Number of IRQs a platform device uses or EPROBE_DEFER + */ +int platform_irq_count(struct platform_device *dev) +{ + int ret, nr = 0; + + while ((ret = platform_get_irq(dev, nr)) >= 0) + nr++; + + if (ret == -EPROBE_DEFER) + return ret; + + return nr; +} +EXPORT_SYMBOL_GPL(platform_irq_count); + +/** * platform_get_resource_byname - get a resource for a device by name * @dev: platform device * @type: resource type |