[PATCH 6.7 442/713] PCI: switchtec: Fix an error handling path in switchtec_pci_probe()

Sasha Levin
2024-03-24T22:54:37Z

From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

[ Upstream commit dec529b0b0572b32f9eb91c882dd1f08ca657efb ]

The commit in Fixes changed the logic on how resources are released and
introduced a new switchtec_exit_pci() that need to be called explicitly in
order to undo a corresponding switchtec_init_pci().

This was done in the remove function, but not in the probe.

Fix the probe now.

Fixes: df25461119d9 ("PCI: switchtec: Fix stdev_release() crash after surprise hot remove")
Link: https://lore.kernel.org/r/01446d2ccb91a578239915812f2b7dfbeb2882af.1703428183.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pci/switch/switchtec.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
index 1804794d0e686..5a4adf6c04cf8 100644
--- a/drivers/pci/switch/switchtec.c
+++ b/drivers/pci/switch/switchtec.c
@@ -1672,7 +1672,7 @@ static int switchtec_pci_probe(struct pci_dev *pdev,
rc = switchtec_init_isr(stdev);
if (rc) {
dev_err(&stdev->dev, "failed to init isr.\n");
- goto err_put;
+ goto err_exit_pci;
}

iowrite32(SWITCHTEC_EVENT_CLEAR |
@@ -1693,6 +1693,8 @@ static int switchtec_pci_probe(struct pci_dev *pdev,

err_devadd:
stdev_kill(stdev);
+err_exit_pci:
+ switchtec_exit_pci(stdev);
err_put:
ida_free(&switchtec_minor_ida, MINOR(stdev->dev.devt));
put_device(&stdev->dev);
--
2.43.0