diff options
| author | Paul Mundt <lethal@linux-sh.org> | 2009-03-10 15:17:26 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-03-10 15:17:26 +0900 |
| commit | e161183ba674f97fce748384f5bb037d07bdc5c9 (patch) | |
| tree | 5b3bd4b995f6435ee977b71082244fa1a647f717 /drivers/pci/msi.c | |
| parent | 2ef7f0dab6b3d171b6aff00a47077385ae3155b5 (diff) | |
| parent | 99adcd9d67aaf04e28f5ae96df280f236bde4b66 (diff) | |
| download | kernel_samsung_smdk4412-e161183ba674f97fce748384f5bb037d07bdc5c9.tar.gz kernel_samsung_smdk4412-e161183ba674f97fce748384f5bb037d07bdc5c9.tar.bz2 kernel_samsung_smdk4412-e161183ba674f97fce748384f5bb037d07bdc5c9.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'drivers/pci/msi.c')
| -rw-r--r-- | drivers/pci/msi.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 44f15ff70c1..baba2eb5367 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -103,14 +103,12 @@ static void msix_set_enable(struct pci_dev *dev, int enable) } } -/* - * Essentially, this is ((1 << (1 << x)) - 1), but without the - * undefinedness of a << 32. - */ static inline __attribute_const__ u32 msi_mask(unsigned x) { - static const u32 mask[] = { 1, 2, 4, 0xf, 0xff, 0xffff, 0xffffffff }; - return mask[x]; + /* Don't shift by >= width of type */ + if (x >= 5) + return 0xffffffff; + return (1 << (1 << x)) - 1; } static void msix_flush_writes(struct irq_desc *desc) |