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ARM: PCI: get rid of pci_std_swizzle()

Browse Source 
Most PCI implementations use the standard PCI swizzle function, which
handles the well defined behaviour of PCI-to-PCI bridges which can be
found on cards (eg, four port ethernet cards.)

Rather than having almost every platform specify the standard swizzle
function, make this the default when no swizzle function is supplied.
Therefore, a swizzle function only needs to be provided when there is
something exceptional which needs to be handled.

This gets rid of the swizzle initializer from 47 files, and leaves us
with just two platforms specifying a swizzle function: ARM Integrator
and Chalice CATS.

Acked-by: Krzysztof Hałasa <khc@pm.waw.pl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2012-03-10 11:39:33 +00:00
parent 1bc39ac5da
commit daeb4c0c3b
49 changed files with 16 additions and 57 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
arch/arm/include/asm/mach/pci.h
View File

@ -48,11 +48,6 @@ struct pci_sys_data {
void *private_data; /* platform controller private data */
};
/*
* This is the standard PCI-PCI bridge swizzling algorithm.
*/
#define pci_std_swizzle pci_common_swizzle
/*
* Call this with your hw_pci struct to initialise the PCI system.
*/

19
arch/arm/kernel/bios32.c
View File

@ -374,16 +374,29 @@ EXPORT_SYMBOL(pcibios_fixup_bus);
#endif
/*
* Swizzle the device pin each time we cross a bridge.
* This might update pin and returns the slot number.
* Swizzle the device pin each time we cross a bridge. If a platform does
* not provide a swizzle function, we perform the standard PCI swizzling.
*
* The default swizzling walks up the bus tree one level at a time, applying
* the standard swizzle function at each step, stopping when it finds the PCI
* root bus. This will return the slot number of the bridge device on the
* root bus and the interrupt pin on that device which should correspond
* with the downstream device interrupt.
*
* Platforms may override this, in which case the slot and pin returned
* depend entirely on the platform code. However, please note that the
* PCI standard swizzle is implemented on plug-in cards and Cardbus based
* PCI extenders, so it can not be ignored.
*/
static u8 __devinit pcibios_swizzle(struct pci_dev *dev, u8 *pin)
{
struct pci_sys_data *sys = dev->sysdata;
int slot = 0, oldpin = *pin;
int slot, oldpin = *pin;
if (sys->swizzle)
slot = sys->swizzle(dev, pin);
else
slot = pci_common_swizzle(dev, pin);
if (debug_pci)
printk("PCI: %s swizzling pin %d => pin %d slot %d\n",

2
arch/arm/mach-cns3xxx/pcie.c
View File

@ -221,7 +221,6 @@ static struct cns3xxx_pcie cns3xxx_pcie[] = {
.irqs = { IRQ_CNS3XXX_PCIE0_RC, IRQ_CNS3XXX_PCIE0_DEVICE, },
.hw_pci = {
.domain = 0,
.swizzle = pci_std_swizzle,
.nr_controllers = 1,
.setup = cns3xxx_pci_setup,
.scan = cns3xxx_pci_scan_bus,
@ -264,7 +263,6 @@ static struct cns3xxx_pcie cns3xxx_pcie[] = {
.irqs = { IRQ_CNS3XXX_PCIE1_RC, IRQ_CNS3XXX_PCIE1_DEVICE, },
.hw_pci = {
.domain = 1,
.swizzle = pci_std_swizzle,
.nr_controllers = 1,
.setup = cns3xxx_pci_setup,
.scan = cns3xxx_pci_scan_bus,

1
arch/arm/mach-dove/pcie.c
View File

@ -201,7 +201,6 @@ static int __init dove_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
static struct hw_pci dove_pci __initdata = {
.nr_controllers = 2,
.swizzle = pci_std_swizzle,
.setup = dove_pcie_setup,
.scan = dove_pcie_scan_bus,
.map_irq = dove_pcie_map_irq,

1
arch/arm/mach-footbridge/ebsa285-pci.c
View File

@ -29,7 +29,6 @@ static int __init ebsa285_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
}
static struct hw_pci ebsa285_pci __initdata = {
.swizzle = pci_std_swizzle,
.map_irq = ebsa285_map_irq,
.nr_controllers = 1,
.setup = dc21285_setup,

1
arch/arm/mach-footbridge/netwinder-pci.c
View File

@ -43,7 +43,6 @@ static int __init netwinder_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
}
static struct hw_pci netwinder_pci __initdata = {
.swizzle = pci_std_swizzle,
.map_irq = netwinder_map_irq,
.nr_controllers = 1,
.setup = dc21285_setup,

1
arch/arm/mach-iop13xx/iq81340mc.c
View File

@ -54,7 +54,6 @@ iq81340mc_pcix_map_irq(const struct pci_dev *dev, u8 idsel, u8 pin)
}
static struct hw_pci iq81340mc_pci __initdata = {
.swizzle = pci_std_swizzle,
.nr_controllers = 0,
.setup = iop13xx_pci_setup,
.map_irq = iq81340mc_pcix_map_irq,

1
arch/arm/mach-iop13xx/iq81340sc.c
View File

@ -56,7 +56,6 @@ iq81340sc_atux_map_irq(struct pci_dev *dev, u8 idsel, u8 pin)
}
static struct hw_pci iq81340sc_pci __initdata = {
.swizzle = pci_std_swizzle,
.nr_controllers = 0,
.setup = iop13xx_pci_setup,
.scan = iop13xx_scan_bus,

1
arch/arm/mach-iop32x/em7210.c
View File

@ -103,7 +103,6 @@ em7210_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
}
static struct hw_pci em7210_pci __initdata = {
.swizzle = pci_std_swizzle,
.nr_controllers = 1,
.setup = iop3xx_pci_setup,
.preinit = iop3xx_pci_preinit,

1
arch/arm/mach-iop32x/glantank.c
View File

@ -96,7 +96,6 @@ glantank_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
}
static struct hw_pci glantank_pci __initdata = {
.swizzle = pci_std_swizzle,
.nr_controllers = 1,
.setup = iop3xx_pci_setup,
.preinit = iop3xx_pci_preinit,

2
arch/arm/mach-iop32x/iq31244.c
View File

@ -130,7 +130,6 @@ ep80219_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
}
static struct hw_pci ep80219_pci __initdata = {
.swizzle = pci_std_swizzle,
.nr_controllers = 1,
.setup = iop3xx_pci_setup,
.preinit = iop3xx_pci_preinit,
@ -166,7 +165,6 @@ iq31244_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
}
static struct hw_pci iq31244_pci __initdata = {
.swizzle = pci_std_swizzle,
.nr_controllers = 1,
.setup = iop3xx_pci_setup,
.preinit = iop3xx_pci_preinit,

1
arch/arm/mach-iop32x/iq80321.c
View File

@ -101,7 +101,6 @@ iq80321_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
}
static struct hw_pci iq80321_pci __initdata = {
.swizzle = pci_std_swizzle,
.nr_controllers = 1,
.setup = iop3xx_pci_setup,
.preinit = iop3xx_pci_preinit_cond,

1
arch/arm/mach-iop32x/n2100.c
View File

@ -114,7 +114,6 @@ n2100_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
}
static struct hw_pci n2100_pci __initdata = {
.swizzle = pci_std_swizzle,
.nr_controllers = 1,
.setup = iop3xx_pci_setup,
.preinit = iop3xx_pci_preinit,

1
arch/arm/mach-iop33x/iq80331.c
View File

@ -84,7 +84,6 @@ iq80331_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
}
static struct hw_pci iq80331_pci __initdata = {
.swizzle = pci_std_swizzle,
.nr_controllers = 1,
.setup = iop3xx_pci_setup,
.preinit = iop3xx_pci_preinit_cond,

1
arch/arm/mach-iop33x/iq80332.c
View File

@ -84,7 +84,6 @@ iq80332_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
}
static struct hw_pci iq80332_pci __initdata = {
.swizzle = pci_std_swizzle,
.nr_controllers = 1,
.setup = iop3xx_pci_setup,
.preinit = iop3xx_pci_preinit_cond,

1
arch/arm/mach-ixp4xx/avila-pci.c
View File

@ -66,7 +66,6 @@ static int __init avila_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
struct hw_pci avila_pci __initdata = {
.nr_controllers = 1,
.preinit = avila_pci_preinit,
.swizzle = pci_std_swizzle,
.setup = ixp4xx_setup,
.scan = ixp4xx_scan_bus,
.map_irq = avila_map_irq,

1
arch/arm/mach-ixp4xx/coyote-pci.c
View File

@ -49,7 +49,6 @@ static int __init coyote_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
struct hw_pci coyote_pci __initdata = {
.nr_controllers = 1,
.preinit = coyote_pci_preinit,
.swizzle = pci_std_swizzle,
.setup = ixp4xx_setup,
.scan = ixp4xx_scan_bus,
.map_irq = coyote_map_irq,

1
arch/arm/mach-ixp4xx/dsmg600-pci.c
View File

@ -63,7 +63,6 @@ static int __init dsmg600_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
struct hw_pci __initdata dsmg600_pci = {
.nr_controllers = 1,
.preinit = dsmg600_pci_preinit,
.swizzle = pci_std_swizzle,
.setup = ixp4xx_setup,
.scan = ixp4xx_scan_bus,
.map_irq = dsmg600_map_irq,

1
arch/arm/mach-ixp4xx/fsg-pci.c
View File

@ -60,7 +60,6 @@ static int __init fsg_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
struct hw_pci fsg_pci __initdata = {
.nr_controllers = 1,
.preinit = fsg_pci_preinit,
.swizzle = pci_std_swizzle,
.setup = ixp4xx_setup,
.scan = ixp4xx_scan_bus,
.map_irq = fsg_map_irq,

1
arch/arm/mach-ixp4xx/gateway7001-pci.c
View File

@ -48,7 +48,6 @@ static int __init gateway7001_map_irq(const struct pci_dev *dev, u8 slot,
struct hw_pci gateway7001_pci __initdata = {
.nr_controllers = 1,
.preinit = gateway7001_pci_preinit,
.swizzle = pci_std_swizzle,
.setup = ixp4xx_setup,
.scan = ixp4xx_scan_bus,
.map_irq = gateway7001_map_irq,

1
arch/arm/mach-ixp4xx/goramo_mlr.c
View File

@ -475,7 +475,6 @@ static struct hw_pci gmlr_hw_pci __initdata = {
.nr_controllers = 1,
.preinit = gmlr_pci_preinit,
.postinit = gmlr_pci_postinit,
.swizzle = pci_std_swizzle,
.setup = ixp4xx_setup,
.scan = ixp4xx_scan_bus,
.map_irq = gmlr_map_irq,

1
arch/arm/mach-ixp4xx/gtwx5715-pci.c
View File

@ -68,7 +68,6 @@ static int __init gtwx5715_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
struct hw_pci gtwx5715_pci __initdata = {
.nr_controllers = 1,
.preinit = gtwx5715_pci_preinit,
.swizzle = pci_std_swizzle,
.setup = ixp4xx_setup,
.scan = ixp4xx_scan_bus,
.map_irq = gtwx5715_map_irq,

1
arch/arm/mach-ixp4xx/ixdp425-pci.c
View File

@ -61,7 +61,6 @@ static int __init ixdp425_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
struct hw_pci ixdp425_pci __initdata = {
.nr_controllers = 1,
.preinit = ixdp425_pci_preinit,
.swizzle = pci_std_swizzle,
.setup = ixp4xx_setup,
.scan = ixp4xx_scan_bus,
.map_irq = ixdp425_map_irq,

1
arch/arm/mach-ixp4xx/ixdpg425-pci.c
View File

@ -43,7 +43,6 @@ static int __init ixdpg425_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
struct hw_pci ixdpg425_pci __initdata = {
.nr_controllers = 1,
.preinit = ixdpg425_pci_preinit,
.swizzle = pci_std_swizzle,
.setup = ixp4xx_setup,
.scan = ixp4xx_scan_bus,
.map_irq = ixdpg425_map_irq,

1
arch/arm/mach-ixp4xx/miccpt-pci.c
View File

@ -62,7 +62,6 @@ static int __init miccpt_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
struct hw_pci miccpt_pci __initdata = {
.nr_controllers = 1,
.preinit = miccpt_pci_preinit,
.swizzle = pci_std_swizzle,
.setup = ixp4xx_setup,
.scan = ixp4xx_scan_bus,
.map_irq = miccpt_map_irq,

1
arch/arm/mach-ixp4xx/nas100d-pci.c
View File

@ -59,7 +59,6 @@ static int __init nas100d_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
struct hw_pci __initdata nas100d_pci = {
.nr_controllers = 1,
.preinit = nas100d_pci_preinit,
.swizzle = pci_std_swizzle,
.setup = ixp4xx_setup,
.scan = ixp4xx_scan_bus,
.map_irq = nas100d_map_irq,

1
arch/arm/mach-ixp4xx/nslu2-pci.c
View File

@ -55,7 +55,6 @@ static int __init nslu2_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
struct hw_pci __initdata nslu2_pci = {
.nr_controllers = 1,
.preinit = nslu2_pci_preinit,
.swizzle = pci_std_swizzle,
.setup = ixp4xx_setup,
.scan = ixp4xx_scan_bus,
.map_irq = nslu2_map_irq,

1
arch/arm/mach-ixp4xx/vulcan-pci.c
View File

@ -57,7 +57,6 @@ static int __init vulcan_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
struct hw_pci vulcan_pci __initdata = {
.nr_controllers = 1,
.preinit = vulcan_pci_preinit,
.swizzle = pci_std_swizzle,
.setup = ixp4xx_setup,
.scan = ixp4xx_scan_bus,
.map_irq = vulcan_map_irq,

1
arch/arm/mach-ixp4xx/wg302v2-pci.c
View File

@ -47,7 +47,6 @@ static int __init wg302v2_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
struct hw_pci wg302v2_pci __initdata = {
.nr_controllers = 1,
.preinit = wg302v2_pci_preinit,
.swizzle = pci_std_swizzle,
.setup = ixp4xx_setup,
.scan = ixp4xx_scan_bus,
.map_irq = wg302v2_map_irq,

1
arch/arm/mach-kirkwood/pcie.c
View File

@ -254,7 +254,6 @@ static int __init kirkwood_pcie_map_irq(const struct pci_dev *dev, u8 slot,
}
static struct hw_pci kirkwood_pci __initdata = {
.swizzle = pci_std_swizzle,
.setup = kirkwood_pcie_setup,
.scan = kirkwood_pcie_scan_bus,
.map_irq = kirkwood_pcie_map_irq,

1
arch/arm/mach-ks8695/pci.c
View File

@ -306,7 +306,6 @@ static struct hw_pci ks8695_pci __initdata = {
.setup = ks8695_pci_setup,
.scan = ks8695_pci_scan_bus,
.postinit = NULL,
.swizzle = pci_std_swizzle,
.map_irq = NULL,
};

1
arch/arm/mach-mv78xx0/pcie.c
View File

@ -271,7 +271,6 @@ static int __init mv78xx0_pcie_map_irq(const struct pci_dev *dev, u8 slot,
static struct hw_pci mv78xx0_pci __initdata = {
.nr_controllers = 8,
.preinit = mv78xx0_pcie_preinit,
.swizzle = pci_std_swizzle,
.setup = mv78xx0_pcie_setup,
.scan = mv78xx0_pcie_scan_bus,
.map_irq = mv78xx0_pcie_map_irq,

1
arch/arm/mach-orion5x/db88f5281-setup.c
View File

@ -265,7 +265,6 @@ static int __init db88f5281_pci_map_irq(const struct pci_dev *dev, u8 slot,
static struct hw_pci db88f5281_pci __initdata = {
.nr_controllers = 2,
.preinit = db88f5281_pci_preinit,
.swizzle = pci_std_swizzle,
.setup = orion5x_pci_sys_setup,
.scan = orion5x_pci_sys_scan_bus,
.map_irq = db88f5281_pci_map_irq,

1
arch/arm/mach-orion5x/dns323-setup.c
View File

@ -86,7 +86,6 @@ static int __init dns323_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
static struct hw_pci dns323_pci __initdata = {
.nr_controllers = 2,
.swizzle = pci_std_swizzle,
.setup = orion5x_pci_sys_setup,
.scan = orion5x_pci_sys_scan_bus,
.map_irq = dns323_pci_map_irq,

1
arch/arm/mach-orion5x/kurobox_pro-setup.c
View File

@ -138,7 +138,6 @@ static int __init kurobox_pro_pci_map_irq(const struct pci_dev *dev, u8 slot,
static struct hw_pci kurobox_pro_pci __initdata = {
.nr_controllers = 2,
.swizzle = pci_std_swizzle,
.setup = orion5x_pci_sys_setup,
.scan = orion5x_pci_sys_scan_bus,
.map_irq = kurobox_pro_pci_map_irq,

1
arch/arm/mach-orion5x/mss2-setup.c
View File

@ -89,7 +89,6 @@ static int __init mss2_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
static struct hw_pci mss2_pci __initdata = {
.nr_controllers = 2,
.swizzle = pci_std_swizzle,
.setup = orion5x_pci_sys_setup,
.scan = orion5x_pci_sys_scan_bus,
.map_irq = mss2_pci_map_irq,

1
arch/arm/mach-orion5x/rd88f5181l-fxo-setup.c
View File

@ -149,7 +149,6 @@ rd88f5181l_fxo_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
static struct hw_pci rd88f5181l_fxo_pci __initdata = {
.nr_controllers = 2,
.swizzle = pci_std_swizzle,
.setup = orion5x_pci_sys_setup,
.scan = orion5x_pci_sys_scan_bus,
.map_irq = rd88f5181l_fxo_pci_map_irq,

1
arch/arm/mach-orion5x/rd88f5181l-ge-setup.c
View File

@ -161,7 +161,6 @@ rd88f5181l_ge_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
static struct hw_pci rd88f5181l_ge_pci __initdata = {
.nr_controllers = 2,
.swizzle = pci_std_swizzle,
.setup = orion5x_pci_sys_setup,
.scan = orion5x_pci_sys_scan_bus,
.map_irq = rd88f5181l_ge_pci_map_irq,

1
arch/arm/mach-orion5x/rd88f5182-setup.c
View File

@ -200,7 +200,6 @@ static int __init rd88f5182_pci_map_irq(const struct pci_dev *dev, u8 slot,
static struct hw_pci rd88f5182_pci __initdata = {
.nr_controllers = 2,
.preinit = rd88f5182_pci_preinit,
.swizzle = pci_std_swizzle,
.setup = orion5x_pci_sys_setup,
.scan = orion5x_pci_sys_scan_bus,
.map_irq = rd88f5182_pci_map_irq,

1
arch/arm/mach-orion5x/rd88f6183ap-ge-setup.c
View File

@ -102,7 +102,6 @@ static void __init rd88f6183ap_ge_init(void)
static struct hw_pci rd88f6183ap_ge_pci __initdata = {
.nr_controllers = 2,
.swizzle = pci_std_swizzle,
.setup = orion5x_pci_sys_setup,
.scan = orion5x_pci_sys_scan_bus,
.map_irq = orion5x_pci_map_irq,

1
arch/arm/mach-orion5x/terastation_pro2-setup.c
View File

@ -122,7 +122,6 @@ static int __init tsp2_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
static struct hw_pci tsp2_pci __initdata = {
.nr_controllers = 2,
.preinit = tsp2_pci_preinit,
.swizzle = pci_std_swizzle,
.setup = orion5x_pci_sys_setup,
.scan = orion5x_pci_sys_scan_bus,
.map_irq = tsp2_pci_map_irq,

1
arch/arm/mach-orion5x/ts209-setup.c
View File

@ -170,7 +170,6 @@ static int __init qnap_ts209_pci_map_irq(const struct pci_dev *dev, u8 slot,
static struct hw_pci qnap_ts209_pci __initdata = {
.nr_controllers = 2,
.preinit = qnap_ts209_pci_preinit,
.swizzle = pci_std_swizzle,
.setup = orion5x_pci_sys_setup,
.scan = orion5x_pci_sys_scan_bus,
.map_irq = qnap_ts209_pci_map_irq,

1
arch/arm/mach-orion5x/ts409-setup.c
View File

@ -140,7 +140,6 @@ static int __init qnap_ts409_pci_map_irq(const struct pci_dev *dev, u8 slot,
static struct hw_pci qnap_ts409_pci __initdata = {
.nr_controllers = 2,
.swizzle = pci_std_swizzle,
.setup = orion5x_pci_sys_setup,
.scan = orion5x_pci_sys_scan_bus,
.map_irq = qnap_ts409_pci_map_irq,

1
arch/arm/mach-orion5x/wnr854t-setup.c
View File

@ -155,7 +155,6 @@ static int __init wnr854t_pci_map_irq(const struct pci_dev *dev, u8 slot,
static struct hw_pci wnr854t_pci __initdata = {
.nr_controllers = 2,
.swizzle = pci_std_swizzle,
.setup = orion5x_pci_sys_setup,
.scan = orion5x_pci_sys_scan_bus,
.map_irq = wnr854t_pci_map_irq,

1
arch/arm/mach-orion5x/wrt350n-v2-setup.c
View File

@ -243,7 +243,6 @@ static int __init wrt350n_v2_pci_map_irq(const struct pci_dev *dev, u8 slot,
static struct hw_pci wrt350n_v2_pci __initdata = {
.nr_controllers = 2,
.swizzle = pci_std_swizzle,
.setup = orion5x_pci_sys_setup,
.scan = orion5x_pci_sys_scan_bus,
.map_irq = wrt350n_v2_pci_map_irq,

1
arch/arm/mach-pxa/cm-x2xx-pci.c
View File

@ -181,7 +181,6 @@ static void cmx2xx_pci_preinit(void)
}
static struct hw_pci cmx2xx_pci __initdata = {
.swizzle = pci_std_swizzle,
.map_irq = cmx2xx_pci_map_irq,
.nr_controllers = 1,
.setup = it8152_pci_setup,

1
arch/arm/mach-shark/pci.c
View File

@ -29,7 +29,6 @@ extern void __init via82c505_preinit(void);
static struct hw_pci shark_pci __initdata = {
.setup = via82c505_setup,
.swizzle = pci_std_swizzle,
.map_irq = shark_map_irq,
.nr_controllers = 1,
.scan = via82c505_scan_bus,

1
arch/arm/mach-tegra/pcie.c
View File

@ -475,7 +475,6 @@ static struct hw_pci tegra_pcie_hw __initdata = {
.nr_controllers = 2,
.setup = tegra_pcie_setup,
.scan = tegra_pcie_scan_bus,
.swizzle = pci_std_swizzle,
.map_irq = tegra_pcie_map_irq,
};

1
arch/arm/mach-versatile/pci.c
View File

@ -345,7 +345,6 @@ static int __init versatile_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
}
static struct hw_pci versatile_pci __initdata = {
.swizzle = pci_std_swizzle,
.map_irq = versatile_map_irq,
.nr_controllers = 1,
.setup = pci_versatile_setup,