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power sequencing fixes for v7.3-rc4

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- fix kconfig issue in pwrseq-thread-gpu
 - fix error path logic in pwrseq_unit_enable()
 - fix two NULL-pointer dereference bugs in power sequencing core
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Merge tag 'pwrseq-fixes-for-v7.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull power sequencing fixes from Bartosz Golaszewski:

 - fix kconfig issue in pwrseq-thread-gpu

 - fix error path logic in pwrseq_unit_enable()

 - fix two NULL-pointer dereference bugs in power sequencing core

* tag 'pwrseq-fixes-for-v7.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  power: sequencing: fix NULL-pointer dereference in pwrseq_device_register()
  power: sequencing: fix NULL-pointer dereference in pwrseq_unit_new()
  power: sequencing: don't call .post_enable() if pwrseq_unit_enable() failed
  power: sequencing: Fix build issue with COMPILE_TEST
This commit is contained in:
Linus Torvalds 2026-09-17 09:40:25 -07:00
commit f143ea21cf
2 changed files with 9 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/power/sequencing/Kconfig
View File

@ -29,7 +29,8 @@ config POWER_SEQUENCING_QCOM_WCN
config POWER_SEQUENCING_TH1520_GPU
tristate "T-HEAD TH1520 GPU power sequencing driver"
depends on (ARCH_THEAD && AUXILIARY_BUS) || COMPILE_TEST
depends on ARCH_THEAD || COMPILE_TEST
select AUXILIARY_BUS
help
Say Y here to enable the power sequencing driver for the TH1520 SoC
GPU. This driver handles the complex clock and reset sequence

11
drivers/power/sequencing/core.c
View File

@ -101,6 +101,7 @@ static struct pwrseq_unit *pwrseq_unit_new(const struct pwrseq_unit_data *data)
}
kref_init(&unit->ref);
INIT_LIST_HEAD(&unit->list);
INIT_LIST_HEAD(&unit->deps);
unit->enable = data->enable;
unit->disable = data->disable;
@ -504,10 +505,6 @@ pwrseq_device_register(const struct pwrseq_config *config)
*/
device_initialize(&pwrseq->dev);
ret = dev_set_name(&pwrseq->dev, "pwrseq.%d", pwrseq->id);
if (ret)
goto err_put_pwrseq;
pwrseq->owner = config->owner ?: THIS_MODULE;
pwrseq->match = config->match;
@ -516,6 +513,10 @@ pwrseq_device_register(const struct pwrseq_config *config)
INIT_LIST_HEAD(&pwrseq->targets);
INIT_LIST_HEAD(&pwrseq->units);
ret = dev_set_name(&pwrseq->dev, "pwrseq.%d", pwrseq->id);
if (ret)
goto err_put_pwrseq;
ret = pwrseq_setup_targets(config->targets, pwrseq);
if (ret)
goto err_put_pwrseq;
@ -912,6 +913,8 @@ int pwrseq_enable(struct pwrseq_desc *desc)
if (!ret)
desc->powered_on = true;
}
if (ret)
return ret;
if (target->post_enable) {
ret = target->post_enable(pwrseq);