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of: Add function for generating a DT modalias with a newline

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The modalias sysfs attr is lacking a newline for DT aliases on platform
devices. The macio and ibmebus correctly add the newline, but open code it.
Introduce a new function, of_device_modalias(), that fills the buffer with
the modalias including the newline and update users of the old
of_device_get_modalias function.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: linuxppc-dev@lists.ozlabs.org
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rob Herring 2017-03-22 09:16:27 -05:00
parent bcf54d5385
commit 0634c29589
7 changed files with 24 additions and 22 deletions
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drivers/base/platform.c
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@ -847,7 +847,7 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
struct platform_device *pdev = to_platform_device(dev);
int len;
len = of_device_get_modalias(dev, buf, PAGE_SIZE -1);
len = of_device_modalias(dev, buf, PAGE_SIZE);
if (len != -ENODEV)
return len;