From: Bartosz Golaszewski <brgl@bgdev.pl>
To: "Kalle Valo" <kvalo@kernel.org>,
"David S . Miller" <davem@davemloft.net>,
"Eric Dumazet" <edumazet@google.com>,
"Jakub Kicinski" <kuba@kernel.org>,
"Paolo Abeni" <pabeni@redhat.com>,
"Rob Herring" <robh+dt@kernel.org>,
"Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>,
"Conor Dooley" <conor+dt@kernel.org>,
"Bjorn Andersson" <andersson@kernel.org>,
"Konrad Dybcio" <konrad.dybcio@linaro.org>,
"Catalin Marinas" <catalin.marinas@arm.com>,
"Will Deacon" <will@kernel.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Heiko Stuebner" <heiko@sntech.de>,
"Jernej Skrabec" <jernej.skrabec@gmail.com>,
"Chris Morgan" <macromorgan@hotmail.com>,
"Linus Walleij" <linus.walleij@linaro.org>,
"Geert Uytterhoeven" <geert+renesas@glider.be>,
"Arnd Bergmann" <arnd@arndb.de>,
"Neil Armstrong" <neil.armstrong@linaro.org>,
"Nícolas F . R . A . Prado" <nfraprado@collabora.com>,
"Marek Szyprowski" <m.szyprowski@samsung.com>,
"Peng Fan" <peng.fan@nxp.com>,
"Robert Richter" <rrichter@amd.com>,
"Dan Williams" <dan.j.williams@intel.com>,
"Jonathan Cameron" <Jonathan.Cameron@huawei.com>,
"Terry Bowman" <terry.bowman@amd.com>,
"Lukas Wunner" <lukas@wunner.de>,
"Huacai Chen" <chenhuacai@kernel.org>,
"Alex Elder" <elder@linaro.org>,
"Srini Kandagatla" <srinivas.kandagatla@linaro.org>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Abel Vesa" <abel.vesa@linaro.org>
Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-msm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org,
Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Subject: [PATCH 5/9] PCI: hold the rescan mutex when scanning for the first time
Date: Wed, 17 Jan 2024 17:07:44 +0100 [thread overview]
Message-ID: <20240117160748.37682-6-brgl@bgdev.pl> (raw)
In-Reply-To: <20240117160748.37682-1-brgl@bgdev.pl>
From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
With the introduction of the power sequencing drivers that will be able
to trigger the port rescan, we need to hold the rescan mutex during the
initial pci_host_probe() too or the two could get in each other's way.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
drivers/pci/probe.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index b7335be56008..957f7afee7ba 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -3122,7 +3122,9 @@ int pci_host_probe(struct pci_host_bridge *bridge)
struct pci_bus *bus, *child;
int ret;
+ pci_lock_rescan_remove();
ret = pci_scan_root_bus_bridge(bridge);
+ pci_unlock_rescan_remove();
if (ret < 0) {
dev_err(bridge->dev.parent, "Scanning root bridge failed");
return ret;
--
2.40.1
next prev parent reply other threads:[~2024-01-17 16:08 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-17 16:07 [PATCH 0/9] PCI: introduce the concept of power sequencing of PCIe devices Bartosz Golaszewski
2024-01-17 16:07 ` [PATCH 1/9] arm64: dts: qcom: qrb5165-rb5: describe the WLAN module of QCA6390 Bartosz Golaszewski
2024-01-17 16:07 ` [PATCH 2/9] arm64: dts: qcom: sm8550-qrd: add Wifi nodes Bartosz Golaszewski
2024-01-17 16:07 ` [PATCH 3/9] arm64: dts: qcom: sm8650-qrd: " Bartosz Golaszewski
2024-01-17 16:07 ` [PATCH 4/9] PCI: create platform devices for child OF nodes of the port node Bartosz Golaszewski
2024-01-17 16:22 ` Dan Williams
2024-01-18 13:11 ` Bartosz Golaszewski
2024-01-17 16:45 ` Greg Kroah-Hartman
2024-01-18 10:58 ` Bartosz Golaszewski
2024-01-18 11:15 ` Greg Kroah-Hartman
2024-01-30 21:54 ` Bjorn Andersson
2024-01-31 11:04 ` Bartosz Golaszewski
2024-02-02 0:03 ` Bjorn Andersson
2024-02-02 4:50 ` Jeff Johnson
2024-02-02 10:02 ` Re: " Bartosz Golaszewski
2024-02-07 16:32 ` Bartosz Golaszewski
2024-02-14 15:34 ` Greg Kroah-Hartman
2024-01-17 16:07 ` Bartosz Golaszewski [this message]
2024-01-17 16:07 ` [PATCH 6/9] PCI/pwrseq: add pwrseq core code Bartosz Golaszewski
2024-01-17 16:07 ` [PATCH 7/9] dt-bindings: wireless: ath11k: describe QCA6390 Bartosz Golaszewski
2024-01-17 16:07 ` [PATCH 8/9] dt-bindings: wireless: ath11k: describe WCN7850 Bartosz Golaszewski
2024-01-17 18:07 ` Kalle Valo
2024-01-17 20:01 ` Bartosz Golaszewski
2024-01-17 16:07 ` [PATCH 9/9] PCI/pwrseq: add a pwrseq driver for QCA6390 Bartosz Golaszewski
2024-01-18 5:49 ` Kalle Valo
2024-01-18 17:50 ` Konrad Dybcio
2024-01-17 17:53 ` [PATCH 0/9] PCI: introduce the concept of power sequencing of PCIe devices Neil Armstrong
2024-01-17 18:16 ` Dmitry Baryshkov
2024-01-18 18:53 ` Dmitry Baryshkov
2024-01-19 11:52 ` Bartosz Golaszewski
2024-01-19 12:31 ` Dmitry Baryshkov
2024-01-19 13:35 ` brgl
2024-01-19 14:07 ` Dmitry Baryshkov
2024-01-19 14:11 ` Bartosz Golaszewski
2024-01-19 14:48 ` Bartosz Golaszewski
2024-01-19 16:34 ` Lukas Wunner
2024-01-19 16:45 ` Rob Herring
2024-01-18 14:29 ` Rob Herring
2024-01-18 16:38 ` Bartosz Golaszewski
2024-01-18 16:47 ` Manivannan Sadhasivam
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