From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
To: bhelgaas@google.com
Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
bartosz.golaszewski@linaro.org,
Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>,
Jonathan Currier <dullfire@yahoo.com>
Subject: [PATCH] PCI/pwrctrl: Create device link only if both platform device and supplies are present
Date: Wed, 20 Nov 2024 11:54:59 +0530 [thread overview]
Message-ID: <20241120062459.6371-1-manivannan.sadhasivam@linaro.org> (raw)
Checking only for platform device for the PCI devices and creating the
devlink causes regression on SPARCv9 systems as they seem to have platform
device populated elsewhere.
So add a check for supplies in DT to make sure that the devlink is only
created for devices that require pwrctrl support.
Reported-by: Jonathan Currier <dullfire@yahoo.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219513
Fixes: 03cfe0e05650 ("PCI/pwrctl: Ensure that the pwrctl drivers are probed before the PCI client drivers")
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
drivers/pci/bus.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index 7a061cc860d5..e70f4c089cd4 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -394,7 +394,7 @@ void pci_bus_add_device(struct pci_dev *dev)
* PCI client drivers.
*/
pdev = of_find_device_by_node(dn);
- if (pdev) {
+ if (pdev && of_pci_is_supply_present(dn)) {
if (!device_link_add(&dev->dev, &pdev->dev,
DL_FLAG_AUTOREMOVE_CONSUMER))
pci_err(dev, "failed to add device link between %s and %s\n",
--
2.25.1
reply other threads:[~2024-11-20 6:25 UTC|newest]
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