diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2012-02-28 12:33:41 +0000 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-02-28 12:33:46 +0000 |
| commit | abf45ce84c4e36bd64aef20d7df9a79bd5e4b799 (patch) | |
| tree | f118e135bdd60b680703d1b38c7fdc7b9d7c503d /arch/powerpc/platforms/powernv/pci.c | |
| parent | 082f53c2f573c75a8f1610c587a43b6817e20f90 (diff) | |
| parent | b1f91a9ce335eb4e0fef17c10f39a438ac3fce9b (diff) | |
Merge branch 'imx/defconfig' of git://git.linaro.org/people/shawnguo/linux-2.6 into next/soc
* 'imx/defconfig' of git://git.linaro.org/people/shawnguo/linux-2.6: (2 commits)
ARM: defconfig: imx_v6_v7: build in REGULATOR_FIXED_VOLTAGE
ARM: imx: update imx_v6_v7_defconfig
(upadte to v3.3-rc5)
Diffstat (limited to 'arch/powerpc/platforms/powernv/pci.c')
| -rw-r--r-- | arch/powerpc/platforms/powernv/pci.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c index a70bc1e385eb..f92b9ef7340e 100644 --- a/arch/powerpc/platforms/powernv/pci.c +++ b/arch/powerpc/platforms/powernv/pci.c @@ -52,32 +52,38 @@ static int pnv_msi_check_device(struct pci_dev* pdev, int nvec, int type) static unsigned int pnv_get_one_msi(struct pnv_phb *phb) { - unsigned int id; + unsigned long flags; + unsigned int id, rc; + + spin_lock_irqsave(&phb->lock, flags); - spin_lock(&phb->lock); id = find_next_zero_bit(phb->msi_map, phb->msi_count, phb->msi_next); if (id >= phb->msi_count && phb->msi_next) id = find_next_zero_bit(phb->msi_map, phb->msi_count, 0); if (id >= phb->msi_count) { - spin_unlock(&phb->lock); - return 0; + rc = 0; + goto out; } __set_bit(id, phb->msi_map); - spin_unlock(&phb->lock); - return id + phb->msi_base; + rc = id + phb->msi_base; +out: + spin_unlock_irqrestore(&phb->lock, flags); + return rc; } static void pnv_put_msi(struct pnv_phb *phb, unsigned int hwirq) { + unsigned long flags; unsigned int id; if (WARN_ON(hwirq < phb->msi_base || hwirq >= (phb->msi_base + phb->msi_count))) return; id = hwirq - phb->msi_base; - spin_lock(&phb->lock); + + spin_lock_irqsave(&phb->lock, flags); __clear_bit(id, phb->msi_map); - spin_unlock(&phb->lock); + spin_unlock_irqrestore(&phb->lock, flags); } static int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type) |