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pci-v7.0-fixes-5

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Merge tag 'pci-v7.0-fixes-5' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci

Pull pci fixes from Bjorn Helgaas:

 - Remove power-off from pwrctrl drivers since this is now done directly
   by the PCI controller drivers (Chen-Yu Tsai)

 - Fix pwrctrl device node leak (Felix Gu)

 - Document a TLP header decoder for AER log messages (Lukas Wunner)

* tag 'pci-v7.0-fixes-5' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
  Documentation: PCI: Document PCIe TLP Header decoder for AER messages
  PCI/pwrctrl: Fix pci_pwrctrl_is_required() device node leak
  PCI/pwrctrl: Do not power off on pwrctrl device removal
This commit is contained in:
Linus Torvalds 2026-03-27 13:25:58 -07:00
commit 8af4fad545
4 changed files with 13 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
Documentation/PCI/pcieaer-howto.rst
View File

@ -85,6 +85,16 @@ In the example, 'Requester ID' means the ID of the device that sent
the error message to the Root Port. Please refer to PCIe specs for other
fields.
The 'TLP Header' is the prefix/header of the TLP that caused the error
in raw hex format. To decode the TLP Header into human-readable form
one may use tlp-tool:
https://github.com/mmpg-x86/tlp-tool
Example usage::
curl -L https://git.kernel.org/linus/2ca1c94ce0b6 | rtlp-tool --aer
AER Ratelimits
--------------

4
drivers/pci/pwrctrl/core.c
View File

@ -299,8 +299,10 @@ static bool pci_pwrctrl_is_required(struct device_node *np)
struct device_node *remote __free(device_node) =
of_graph_get_remote_port_parent(endpoint);
if (remote) {
if (of_pci_supply_present(remote))
if (of_pci_supply_present(remote)) {
of_node_put(endpoint);
return true;
}
}
}
}

12
drivers/pci/pwrctrl/pci-pwrctrl-pwrseq.c
View File

@ -68,13 +68,6 @@ static int pwrseq_pwrctrl_power_off(struct pci_pwrctrl *pwrctrl)
return pwrseq_power_off(pwrseq->pwrseq);
}
static void devm_pwrseq_pwrctrl_power_off(void *data)
{
struct pwrseq_pwrctrl *pwrseq = data;
pwrseq_pwrctrl_power_off(&pwrseq->pwrctrl);
}
static int pwrseq_pwrctrl_probe(struct platform_device *pdev)
{
const struct pwrseq_pwrctrl_pdata *pdata;
@ -101,11 +94,6 @@ static int pwrseq_pwrctrl_probe(struct platform_device *pdev)
return dev_err_probe(dev, PTR_ERR(pwrseq->pwrseq),
"Failed to get the power sequencer\n");
ret = devm_add_action_or_reset(dev, devm_pwrseq_pwrctrl_power_off,
pwrseq);
if (ret)
return ret;
pwrseq->pwrctrl.power_on = pwrseq_pwrctrl_power_on;
pwrseq->pwrctrl.power_off = pwrseq_pwrctrl_power_off;

1
drivers/pci/pwrctrl/slot.c
View File

@ -63,7 +63,6 @@ static void devm_slot_pwrctrl_release(void *data)
{
struct slot_pwrctrl *slot = data;
slot_pwrctrl_power_off(&slot->pwrctrl);
regulator_bulk_free(slot->num_supplies, slot->supplies);
}