From 5f92635462d64f09f4643e7c15c48ea7a1f7d2b7 Mon Sep 17 00:00:00 2001 From: Keith Busch Date: Tue, 13 Sep 2016 09:21:47 -0600 Subject: [PATCH] MIPS: PCI: Reduce stack frame usage This patch removes creating a fake pci device in MIPS early config access and instead just uses the pci bus to get the same functionality. The struct pci_dev is too large to allocate on the stack, and was relying on compiler optimizations to remove its usage. Signed-off-by: Keith Busch Reviewed-by: Atsushi Nemoto Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/14253/ Signed-off-by: Ralf Baechle --- arch/mips/txx9/generic/pci.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/arch/mips/txx9/generic/pci.c b/arch/mips/txx9/generic/pci.c index 1f6bc9a3036c..285d84e5c7b9 100644 --- a/arch/mips/txx9/generic/pci.c +++ b/arch/mips/txx9/generic/pci.c @@ -29,12 +29,8 @@ static int __init early_read_config_word(struct pci_controller *hose, int top_bus, int bus, int devfn, int offset, u16 *value) { - struct pci_dev fake_dev; struct pci_bus fake_bus; - fake_dev.bus = &fake_bus; - fake_dev.sysdata = hose; - fake_dev.devfn = devfn; fake_bus.number = bus; fake_bus.sysdata = hose; fake_bus.ops = hose->pci_ops; @@ -45,7 +41,7 @@ early_read_config_word(struct pci_controller *hose, else fake_bus.parent = NULL; - return pci_read_config_word(&fake_dev, offset, value); + return pci_bus_read_config_word(&fake_bus, devfn, offset, value); } int __init txx9_pci66_check(struct pci_controller *hose, int top_bus, -- 2.20.1