From: Nicolas Saenz Julienne nsaenzjulienne@suse.de
[ Upstream commit 22e21e51ce755399fd42055a3f668ee4af370881 ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pci/controller/pcie-brcmstb.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c index c9ecc4d639c1..2297910bf6e4 100644 --- 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_pcie *pcie)
/* Reset the bridge */ brcm_pcie_bridge_sw_init_set(pcie, 1); + brcm_pcie_perst_set(pcie, 1);
usleep_range(100, 200);