linux-kernel - [PATCH 5.15 469/779] PCI: endpoint: Dont stop controller when unbinding endpoint function

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Message-Id: <20220815180357.348803001@linuxfoundation.org>
Date:   Mon, 15 Aug 2022 20:01:53 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Shunsuke Mie <mie@...l.co.jp>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 469/779] PCI: endpoint: Dont stop controller when unbinding endpoint function

From: Shunsuke Mie <mie@...l.co.jp>

[ Upstream commit 1bc2b7bfba6e2f64edf5e246f3af2967261f6c3d ]

Unbinding an endpoint function from the endpoint controller shouldn't stop
the controller.  This is especially a problem for multi-function endpoints
where other endpoints may still be active.

Don't stop the controller when unbinding one of its endpoints.  Normally
the controller is stopped via configfs.

Fixes: 349e7a85b25f ("PCI: endpoint: functions: Add an EP function to test PCI")
Link: https://lore.kernel.org/r/20220622040924.113279-1-mie@igel.co.jp
Signed-off-by: Shunsuke Mie <mie@...l.co.jp>
Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
Acked-by: Kishon Vijay Abraham I <kishon@...com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/pci/endpoint/functions/pci-epf-test.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c
index 5b833f00e980..a5ed779b0a51 100644
--- a/drivers/pci/endpoint/functions/pci-epf-test.c
+++ b/drivers/pci/endpoint/functions/pci-epf-test.c
@@ -627,7 +627,6 @@ static void pci_epf_test_unbind(struct pci_epf *epf)
 
 	cancel_delayed_work(&epf_test->cmd_handler);
 	pci_epf_test_clean_dma_chan(epf_test);
-	pci_epc_stop(epc);
 	for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {
 		epf_bar = &epf->bar[bar];
 
-- 
2.35.1