5.15-stable review patch. If anyone has any objections, please let me know.
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From: Matti Vaittinen mazziesaccount@gmail.com
[ Upstream commit 7ab681ddedd4b6dd2b047c74af95221c5f827e1d ]
The regulator IRQ helper requires caller to provide pointer to IRQ name which is kept in memory by caller. All other data passed to the helper in the regulator_irq_desc structure is copied. This can cause some confusion and unnecessary complexity.
Make the regulator_irq_helper() to copy also the provided IRQ name information so caller can discard the name after the call to regulator_irq_helper() completes.
Signed-off-by: Matti Vaittinen mazziesaccount@gmail.com Link: https://msgid.link/r/ZhJMuUYwaZbBXFGP@drtxq0yyyyyyyyyyyyydy-3.rev.dnainterne... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/regulator/irq_helpers.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/regulator/irq_helpers.c b/drivers/regulator/irq_helpers.c index 5227644355750..a44a0b30a6516 100644 --- a/drivers/regulator/irq_helpers.c +++ b/drivers/regulator/irq_helpers.c @@ -350,6 +350,9 @@ void *regulator_irq_helper(struct device *dev,
h->irq = irq; h->desc = *d; + h->desc.name = devm_kstrdup(dev, d->name, GFP_KERNEL); + if (!h->desc.name) + return ERR_PTR(-ENOMEM);
ret = init_rdev_state(dev, h, rdev, common_errs, per_rdev_errs, rdev_amount);