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kernel-49/arch/powerpc/kernel/msi.c
Greg Kroah-Hartman 955f27f668 Merge 4.9.147 into android-4.9
Changes in 4.9.147
	signal: Introduce COMPAT_SIGMINSTKSZ for use in compat_sys_sigaltstack
	lib/interval_tree_test.c: make test options module parameters
	lib/interval_tree_test.c: allow full tree search
	lib/rbtree_test.c: make input module parameters
	lib/rbtree-test: lower default params
	lib/interval_tree_test.c: allow users to limit scope of endpoint
	timer/debug: Change /proc/timer_list from 0444 to 0400
	pinctrl: sunxi: a83t: Fix IRQ offset typo for PH11
	aio: fix spectre gadget in lookup_ioctx
	MMC: OMAP: fix broken MMC on OMAP15XX/OMAP5910/OMAP310
	ARM: mmp/mmp2: fix cpu_is_mmp2() on mmp2-dt
	tracing: Fix memory leak in set_trigger_filter()
	tracing: Fix memory leak of instance function hash filters
	powerpc/msi: Fix NULL pointer access in teardown code
	Revert "drm/rockchip: Allow driver to be shutdown on reboot/kexec"
	drm/i915/execlists: Apply a full mb before execution for Braswell
	mac80211: don't WARN on bad WMM parameters from buggy APs
	mac80211: Fix condition validating WMM IE
	IB/hfi1: Remove race conditions in user_sdma send path
	locking: Remove smp_read_barrier_depends() from queued_spin_lock_slowpath()
	locking/qspinlock: Ensure node is initialised before updating prev->next
	locking/qspinlock: Bound spinning on pending->locked transition in slowpath
	locking/qspinlock: Merge 'struct __qspinlock' into 'struct qspinlock'
	locking/qspinlock: Remove unbounded cmpxchg() loop from locking slowpath
	locking/qspinlock: Remove duplicate clear_pending() function from PV code
	locking/qspinlock: Kill cmpxchg() loop when claiming lock from head of queue
	locking/qspinlock: Re-order code
	locking/qspinlock/x86: Increase _Q_PENDING_LOOPS upper bound
	locking/qspinlock, x86: Provide liveness guarantee
	locking/qspinlock: Fix build for anonymous union in older GCC compilers
	mac80211_hwsim: fix module init error paths for netlink
	scsi: libiscsi: Fix NULL pointer dereference in iscsi_eh_session_reset
	scsi: vmw_pscsi: Rearrange code to avoid multiple calls to free_irq during unload
	x86/earlyprintk/efi: Fix infinite loop on some screen widths
	drm/msm: Grab a vblank reference when waiting for commit_done
	ARC: io.h: Implement reads{x}()/writes{x}()
	bonding: fix 802.3ad state sent to partner when unbinding slave
	nfs: don't dirty kernel pages read by direct-io
	SUNRPC: Fix a potential race in xprt_connect()
	sbus: char: add of_node_put()
	drivers/sbus/char: add of_node_put()
	drivers/tty: add missing of_node_put()
	ide: pmac: add of_node_put()
	clk: mvebu: Off by one bugs in cp110_of_clk_get()
	clk: mmp: Off by one in mmp_clk_add()
	Input: omap-keypad - fix keyboard debounce configuration
	libata: whitelist all SAMSUNG MZ7KM* solid-state disks
	mv88e6060: disable hardware level MAC learning
	net/mlx4_en: Fix build break when CONFIG_INET is off
	bpf: check pending signals while verifying programs
	ARM: 8814/1: mm: improve/fix ARM v7_dma_inv_range() unaligned address handling
	ARM: 8815/1: V7M: align v7m_dma_inv_range() with v7 counterpart
	ethernet: fman: fix wrong of_node_put() in probe function
	drm/ast: Fix connector leak during driver unload
	cifs: In Kconfig CONFIG_CIFS_POSIX needs depends on legacy (insecure cifs)
	vhost/vsock: fix reset orphans race with close timeout
	i2c: axxia: properly handle master timeout
	i2c: scmi: Fix probe error on devices with an empty SMB0001 ACPI device node
	nvmet-rdma: fix response use after free
	rtc: snvs: add a missing write sync
	rtc: snvs: Add timeouts to avoid kernel lockups
	Linux 4.9.147

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2019-02-11 23:35:45 +03:00

44 lines
1.2 KiB
C

/*
* Copyright 2006-2007, Michael Ellerman, IBM Corporation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/kernel.h>
#include <linux/msi.h>
#include <linux/pci.h>
#include <asm/machdep.h>
int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
{
struct pci_controller *phb = pci_bus_to_host(dev->bus);
if (!phb->controller_ops.setup_msi_irqs ||
!phb->controller_ops.teardown_msi_irqs) {
pr_debug("msi: Platform doesn't provide MSI callbacks.\n");
return -ENOSYS;
}
/* PowerPC doesn't support multiple MSI yet */
if (type == PCI_CAP_ID_MSI && nvec > 1)
return 1;
return phb->controller_ops.setup_msi_irqs(dev, nvec, type);
}
void arch_teardown_msi_irqs(struct pci_dev *dev)
{
struct pci_controller *phb = pci_bus_to_host(dev->bus);
/*
* We can be called even when arch_setup_msi_irqs() returns -ENOSYS,
* so check the pointer again.
*/
if (phb->controller_ops.teardown_msi_irqs)
phb->controller_ops.teardown_msi_irqs(dev);
}