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authorKeith Busch <keith.busch@intel.com>2016-09-13 17:21:47 +0200
committerRalf Baechle <ralf@linux-mips.org>2016-10-04 16:13:57 +0200
commit5f92635462d64f09f4643e7c15c48ea7a1f7d2b7 (patch)
tree36bd5ffbf1923034222f2b656aba6430517e6d36 /arch/mips/txx9/generic/pci.c
parentMIPS: TXx9: Convert to Common Clock Framework (diff)
downloadlinux-5f92635462d64f09f4643e7c15c48ea7a1f7d2b7.tar.xz
linux-5f92635462d64f09f4643e7c15c48ea7a1f7d2b7.zip
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 <keith.busch@intel.com> Reviewed-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/14253/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/txx9/generic/pci.c')
-rw-r--r--arch/mips/txx9/generic/pci.c6
1 files changed, 1 insertions, 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,