diff options
| author |   Sergei Trofimovich <slyfox@gentoo.org> | 2021-04-29 22:53:33 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-30 11:20:35 -0700 |
| commit | 6d073dad9754c28ab23409f794b3e1ece37d0609 (patch) | |
| tree | 81f0f814e1ef1247a3997744de69a6f7a66b3770 | |
| parent | ia64: drop unused IA64_FW_EMU ifdef (diff) | |
| download | linux-dev-6d073dad9754c28ab23409f794b3e1ece37d0609.tar.xz linux-dev-6d073dad9754c28ab23409f794b3e1ece37d0609.zip | |
ia64: simplify code flow around swiotlb init
Before the change CONFIG_INTEL_IOMMU && !CONFIG_SWIOTLB && !CONFIG_FLATMEM
could skip `set_max_mapnr(max_low_pfn);` if iommu is not present on
system.
Link: https://lkml.kernel.org/r/20210328202439.403601-1-slyfox@gentoo.org
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | arch/ia64/mm/init.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c index 16d0d7d22657..a63585db94fe 100644 --- a/arch/ia64/mm/init.c +++ b/arch/ia64/mm/init.c @@ -644,13 +644,16 @@ mem_init (void) * _before_ any drivers that may need the PCI DMA interface are * initialized or bootmem has been freed. */ + do { #ifdef CONFIG_INTEL_IOMMU - detect_intel_iommu(); - if (!iommu_detected) + detect_intel_iommu(); + if (iommu_detected) + break; #endif #ifdef CONFIG_SWIOTLB swiotlb_init(1); #endif + } while (0); #ifdef CONFIG_FLATMEM BUG_ON(!mem_map); |