diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0776-PCI-brcmstb-Assert-fundamental-reset-on-initializati.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0776-PCI-brcmstb-Assert-fundamental-reset-on-initializati.patch | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0776-PCI-brcmstb-Assert-fundamental-reset-on-initializati.patch b/target/linux/bcm27xx/patches-5.4/950-0776-PCI-brcmstb-Assert-fundamental-reset-on-initializati.patch new file mode 100644 index 0000000000..2692bed050 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0776-PCI-brcmstb-Assert-fundamental-reset-on-initializati.patch @@ -0,0 +1,33 @@ +From d9317f90391167ebc275696d9df3c21ce754d609 Mon Sep 17 00:00:00 2001 +From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> +Date: Thu, 7 May 2020 19:20:20 +0200 +Subject: [PATCH] PCI: brcmstb: Assert fundamental reset on + initialization + +commit 22e21e51ce755399fd42055a3f668ee4af370881 upstream. + +While preparing the driver for upstream this detail was missed. + +If not asserted during the initialization process, devices connected on +the bus will not be made aware of the internal reset happening. This, +potentially resulting in unexpected behavior. + +Link: https://lore.kernel.org/r/20200507172020.18000-1-nsaenzjulienne@suse.de +Fixes: c0452137034b ("PCI: brcmstb: Add Broadcom STB PCIe host controller driver") +Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> +Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> +Acked-by: Florian Fainelli <f.fainelli@gmail.com> +--- + drivers/pci/controller/pcie-brcmstb.c | 1 + + 1 file changed, 1 insertion(+) + +--- a/drivers/pci/controller/pcie-brcmstb.c ++++ b/drivers/pci/controller/pcie-brcmstb.c +@@ -697,6 +697,7 @@ static int brcm_pcie_setup(struct brcm_p + + /* Reset the bridge */ + brcm_pcie_bridge_sw_init_set(pcie, 1); ++ brcm_pcie_perst_set(pcie, 1); + + usleep_range(100, 200); + |