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>,
"Kuppuswamy Sathyanarayanan"
<sathyanarayanan.kuppuswamy@linux.intel.com>,
"Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>,
"Huacai Chen" <chenhuacai@kernel.org>,
"Alex Elder" <elder@linaro.org>,
"Srini Kandagatla" <srinivas.kandagatla@linaro.org>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.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: [RFC 4/9] PCI: hold the rescan mutex when scanning for the first time
Date: Thu, 4 Jan 2024 14:01:18 +0100 [thread overview]
Message-ID: <20240104130123.37115-5-brgl@bgdev.pl> (raw)
In-Reply-To: <20240104130123.37115-1-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:[~2024-01-04 13:02 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-04 13:01 [RFC 0/9] PCI: introduce the concept of power sequencing of PCIe devices Bartosz Golaszewski
2024-01-04 13:01 ` [RFC 1/9] arm64: dts: qcom: sm8250: describe the PCIe port Bartosz Golaszewski
2024-01-04 13:01 ` [RFC 2/9] arm64: dts: qcom: qrb5165-rb5: describe the WLAN module of QCA6390 Bartosz Golaszewski
2024-01-04 13:44 ` Dmitry Baryshkov
2024-01-04 15:13 ` Bartosz Golaszewski
2024-01-04 13:01 ` [RFC 3/9] PCI/portdrv: create platform devices for child OF nodes Bartosz Golaszewski
2024-01-06 1:05 ` Jeff Johnson
2024-01-09 14:43 ` Lukas Wunner
2024-01-10 12:55 ` Bartosz Golaszewski
2024-01-10 13:28 ` Lukas Wunner
2024-01-10 16:26 ` Bartosz Golaszewski
2024-01-10 16:41 ` Lukas Wunner
2024-01-10 20:18 ` Bartosz Golaszewski
2024-01-11 10:42 ` Lukas Wunner
2024-01-11 11:09 ` Bartosz Golaszewski
2024-01-11 15:02 ` Lukas Wunner
2024-01-11 16:16 ` Bartosz Golaszewski
2024-01-11 21:43 ` Geert Uytterhoeven
2024-01-12 9:43 ` Bartosz Golaszewski
2024-01-12 9:47 ` Lukas Wunner
2024-01-12 9:43 ` Lukas Wunner
2024-01-17 23:38 ` Rob Herring
2024-01-10 20:41 ` Dan Williams
2024-01-11 12:40 ` Manivannan Sadhasivam
2024-01-11 15:06 ` Lukas Wunner
2024-01-04 13:01 ` Bartosz Golaszewski [this message]
2024-01-04 13:01 ` [RFC 5/9] PCI/pwrseq: add pwrseq core code Bartosz Golaszewski
2024-01-06 1:25 ` Jeff Johnson
2024-01-04 13:01 ` [RFC 6/9] dt-bindings: vendor-prefixes: add a PCI prefix for Qualcomm Atheros Bartosz Golaszewski
2024-01-04 14:33 ` Rob Herring
2024-01-04 14:49 ` Sebastian Reichel
2024-01-08 19:10 ` Rob Herring
2024-01-08 19:22 ` Bartosz Golaszewski
2024-01-09 2:56 ` Rob Herring
2024-01-09 9:17 ` Krzysztof Kozlowski
2024-01-09 9:30 ` Bartosz Golaszewski
2024-01-04 13:01 ` [RFC 7/9] dt-bindings: wireless: ath11k: describe QCA6390 Bartosz Golaszewski
2024-01-04 15:57 ` Krzysztof Kozlowski
2024-01-09 9:13 ` Kalle Valo
2024-01-04 13:01 ` [RFC 8/9] PCI/pwrseq: add a pwrseq driver for QCA6390 Bartosz Golaszewski
2024-01-06 1:31 ` Jeff Johnson
2024-01-09 9:18 ` Kalle Valo
2024-01-09 9:34 ` Chen-Yu Tsai
2024-01-09 10:09 ` Kalle Valo
2024-01-09 10:14 ` Arnd Bergmann
2024-01-09 10:26 ` Chen-Yu Tsai
2024-01-09 10:38 ` Arnd Bergmann
2024-01-09 16:43 ` Kalle Valo
2024-01-09 16:46 ` Arnd Bergmann
2024-01-04 13:01 ` [RFC 9/9] arm64: defconfig: enable the PCIe power sequencing " Bartosz Golaszewski
2024-01-04 15:11 ` [RFC 0/9] PCI: introduce the concept of power sequencing of PCIe devices Sebastian Reichel
2024-01-08 15:24 ` Neil Armstrong
2024-01-08 16:10 ` Bartosz Golaszewski
2024-01-09 4:08 ` Florian Fainelli
2024-01-09 7:08 ` Chen-Yu Tsai
2024-01-09 7:41 ` Manivannan Sadhasivam
2024-01-09 9:29 ` Geert Uytterhoeven
2024-01-09 9:24 ` Kalle Valo
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