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authorLinus Torvalds <torvalds@linux-foundation.org>2014-02-24 07:58:50 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-02-24 07:58:50 -0800
commit335d08b86fb48e0445de090de0dacd7404798892 (patch)
tree507c293991eeecde6aff064b15b7497d897cca1b /arch
parentcfbf8d4857c26a8a307fb7cd258074c9dcd8c691 (diff)
parent9955e8d15f53e53540aaed7bcef640142e65e900 (diff)
downloadlinux-335d08b86fb48e0445de090de0dacd7404798892.tar.bz2
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 bug fixes from Martin Schwidefsky: "A couple of s390 bug fixes. The PCI segment boundary issue is a nasty one as it can lead to data corruption" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/cio: Fix missing subchannels after CHPID configure on s390/pci/dma: use correct segment boundary size s390/compat: fix sys_sched_getattr compat wrapper s390/zcrypt: additional check to avoid overflow in msg-type 6 requests
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/kernel/compat_wrapper.S2
-rw-r--r--arch/s390/pci/pci_dma.c8
2 files changed, 6 insertions, 4 deletions
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index 59c8efce1b99..0248949a756d 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -1421,5 +1421,5 @@ ENTRY(sys_sched_setattr_wrapper)
ENTRY(sys_sched_getattr_wrapper)
lgfr %r2,%r2 # pid_t
llgtr %r3,%r3 # const char __user *
- llgfr %r3,%r3 # unsigned int
+ llgfr %r4,%r4 # unsigned int
jg sys_sched_getattr
diff --git a/arch/s390/pci/pci_dma.c b/arch/s390/pci/pci_dma.c
index 60c11a629d96..f91c03119804 100644
--- a/arch/s390/pci/pci_dma.c
+++ b/arch/s390/pci/pci_dma.c
@@ -206,11 +206,13 @@ static void dma_cleanup_tables(struct zpci_dev *zdev)
zdev->dma_table = NULL;
}
-static unsigned long __dma_alloc_iommu(struct zpci_dev *zdev, unsigned long start,
- int size)
+static unsigned long __dma_alloc_iommu(struct zpci_dev *zdev,
+ unsigned long start, int size)
{
- unsigned long boundary_size = 0x1000000;
+ unsigned long boundary_size;
+ boundary_size = ALIGN(dma_get_seg_boundary(&zdev->pdev->dev) + 1,
+ PAGE_SIZE) >> PAGE_SHIFT;
return iommu_area_alloc(zdev->iommu_bitmap, zdev->iommu_pages,
start, size, 0, boundary_size, 0);
}