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kernel/resource: simplify API __devm_release_region() implementation

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Simplify __devm_release_region() implementation by dedicated API
devres_release() which have below advantages than current
__release_region() + devres_destroy():

It is simpler if __devm_release_region() is undoing what
__devm_request_region() did, otherwise, it can avoid wrong and undesired
__release_region().

Link: https://lkml.kernel.org/r/20241017-release_region_fix-v1-1-84a3e8441284@quicinc.com
Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Zijun Hu 2024-10-17 23:34:49 +08:00 committed by Andrew Morton
parent afdbcfc779
commit bcaadbb2ee
1 changed files with 1 additions and 2 deletions
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3
kernel/resource.c
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@ -1683,8 +1683,7 @@ void __devm_release_region(struct device *dev, struct resource *parent,
{
struct region_devres match_data = { parent, start, n };
__release_region(parent, start, n);
WARN_ON(devres_destroy(dev, devm_region_release, devm_region_match,
WARN_ON(devres_release(dev, devm_region_release, devm_region_match,
&match_data));
}
EXPORT_SYMBOL(__devm_release_region);