* Alexander Gordeev <agordeev@xxxxxxxxxx> wrote: > When multiple MSIs are enabled with pci_enable_msi_block() the number of > allocated IRQs 'nvec' is rounded up to the nearest value of power of two. > That could lead to a condition when number of requested and used IRQs is > less than number of actually allocated IRQs. > > This fix introduces 'msi_desc::nvec' field to address the above issue - > when non-zero, it holds the number of allocated IRQs. Otherwise, the old > method is used. > > Signed-off-by: Alexander Gordeev <agordeev@xxxxxxxxxx> > --- > arch/x86/kernel/apic/io_apic.c | 16 +++++++--------- > drivers/pci/msi.c | 10 ++++++++-- > include/linux/msi.h | 1 + > 3 files changed, 16 insertions(+), 11 deletions(-) This should be switched with the first patch: first extend the generic MSI code, then add x86 support for that variant. Adding multi-MSI support in one patch then tweaking it in the very next patch makes little sense and cannot possibly have been tested much so it's a potential bisection trap. Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
