diff options
Diffstat (limited to 'target/linux/generic/backport-4.19/101-arm-cns3xxx-use-actual-size-reads-for-PCIe.patch')
-rw-r--r-- | target/linux/generic/backport-4.19/101-arm-cns3xxx-use-actual-size-reads-for-PCIe.patch | 46 |
1 files changed, 0 insertions, 46 deletions
diff --git a/target/linux/generic/backport-4.19/101-arm-cns3xxx-use-actual-size-reads-for-PCIe.patch b/target/linux/generic/backport-4.19/101-arm-cns3xxx-use-actual-size-reads-for-PCIe.patch deleted file mode 100644 index 2b3384391a..0000000000 --- a/target/linux/generic/backport-4.19/101-arm-cns3xxx-use-actual-size-reads-for-PCIe.patch +++ /dev/null @@ -1,46 +0,0 @@ -From 4cc30de79d293f1e8c5f50ae3a9c005def9564a0 Mon Sep 17 00:00:00 2001 -From: Koen Vandeputte <koen.vandeputte@ncentric.com> -Date: Mon, 7 Jan 2019 14:14:27 +0100 -Subject: [PATCH 2/2] arm: cns3xxx: use actual size reads for PCIe - -commit 802b7c06adc7 ("ARM: cns3xxx: Convert PCI to use generic config accessors") -reimplemented cns3xxx_pci_read_config() using pci_generic_config_read32(), -which preserved the property of only doing 32-bit reads. - -It also replaced cns3xxx_pci_write_config() with pci_generic_config_write(), -so it changed writes from always being 32 bits to being the actual size, -which works just fine. - -Due to: -- The documentation does not mention that only 32 bit access is allowed. -- Writes are already executed using the actual size -- Extensive testing shows that 8b, 16b and 32b reads work as intended - -It makes perfectly sense to also swap 32 bit reading in favor of actual size. - -Fixes: 802b7c06adc7 ("ARM: cns3xxx: Convert PCI to use generic config accessors") -Suggested-by: Bjorn Helgaas <bhelgaas@google.com> -Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com> -CC: Arnd Bergmann <arnd@arndb.de> -CC: Krzysztof Halasa <khalasa@piap.pl> -CC: Olof Johansson <olof@lixom.net> -CC: Robin Leblon <robin.leblon@ncentric.com> -CC: Rob Herring <robh@kernel.org> -CC: Russell King <linux@armlinux.org.uk> -CC: Tim Harvey <tharvey@gateworks.com> -CC: stable@vger.kernel.org # v4.0+ ---- - arch/arm/mach-cns3xxx/pcie.c | 2 +- - 1 file changed, 1 insertion(+), 1 deletion(-) - ---- a/arch/arm/mach-cns3xxx/pcie.c -+++ b/arch/arm/mach-cns3xxx/pcie.c -@@ -93,7 +93,7 @@ static int cns3xxx_pci_read_config(struc - u32 mask = (0x1ull << (size * 8)) - 1; - int shift = (where % 4) * 8; - -- ret = pci_generic_config_read32(bus, devfn, where, size, val); -+ ret = pci_generic_config_read(bus, devfn, where, size, val); - - if (ret == PCIBIOS_SUCCESSFUL && !bus->number && !devfn && - (where & 0xffc) == PCI_CLASS_REVISION) |