mvebu: sort patches

[openwrt/openwrt.git] / target / linux / mvebu / patches-5.4 / 408-PCI-aardvark-Don-t-touch-PCIe-registers-if-no-card-c.patch

diff --git a/target/linux/mvebu/patches-5.4/408-PCI-aardvark-Don-t-touch-PCIe-registers-if-no-card-c.patch b/target/linux/mvebu/patches-5.4/408-PCI-aardvark-Don-t-touch-PCIe-registers-if-no-card-c.patch
deleted file mode 100644 (file)
index dfc068c..0000000
--- a/target/linux/mvebu/patches-5.4/408-PCI-aardvark-Don-t-touch-PCIe-registers-if-no-card-c.patch
+++ /dev/null
@@ -1,50 +0,0 @@
-From 70e380250c3621c55ff218cbaf2272830d9dbb1d Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org>
-Date: Thu, 2 Jul 2020 10:30:36 +0200
-Subject: [PATCH] PCI: aardvark: Don't touch PCIe registers if no card
- connected
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-When there is no PCIe card connected and advk_pcie_rd_conf() or
-advk_pcie_wr_conf() is called for PCI bus which doesn't belong to emulated
-root bridge, the aardvark driver throws the following error message:
-
-  advk-pcie d0070000.pcie: config read/write timed out
-
-Obviously accessing PCIe registers of disconnected card is not possible.
-
-Extend check in advk_pcie_valid_device() function for validating
-availability of PCIe bus. If PCIe link is down, then the device is marked
-as Not Found and the driver does not try to access these registers.
-
-This is just an optimization to prevent accessing PCIe registers when card
-is disconnected. Trying to access PCIe registers of disconnected card does
-not cause any crash, kernel just needs to wait for a timeout. So if card
-disappear immediately after checking for PCIe link (before accessing PCIe
-registers), it does not cause any problems.
-
-Link: https://lore.kernel.org/r/20200702083036.12230-1-pali@kernel.org
-Signed-off-by: Pali Rohár <pali@kernel.org>
-Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
----
- drivers/pci/controller/pci-aardvark.c | 7 +++++++
- 1 file changed, 7 insertions(+)
-
---- a/drivers/pci/controller/pci-aardvark.c
-+++ b/drivers/pci/controller/pci-aardvark.c
-@@ -639,6 +639,13 @@ static bool advk_pcie_valid_device(struc
-       if ((bus->number == pcie->root_bus_nr) && PCI_SLOT(devfn) != 0)
-               return false;
- 
-+      /*
-+       * If the link goes down after we check for link-up, nothing bad
-+       * happens but the config access times out.
-+       */
-+      if (bus->number != pcie->root_bus_nr && !advk_pcie_link_up(pcie))
-+              return false;
-+
-       return true;
- }
-