diff options
| author | Sven Schnelle <svens@stackframe.org> | 2020-08-11 18:19:19 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-21 11:02:06 +0200 |
| commit | 562744b2a2d0fecdb7cf101ff9d1d443731042f4 (patch) | |
| tree | f91262f7ded4b7275de0e21370aeafb462f3d59a /drivers/parisc | |
| parent | 3ce4ded54c8b43f5d3f63d3f6dc498dee548f57c (diff) | |
parisc: mask out enable and reserved bits from sba imask
commit 5b24993c21cbf2de11aff077a48c5cb0505a0450 upstream.
When using kexec the SBA IOMMU IBASE might still have the RE
bit set. This triggers a WARN_ON when trying to write back the
IBASE register later, and it also makes some mask calculations fail.
Cc: <stable@vger.kernel.org>
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/parisc')
| -rw-r--r-- | drivers/parisc/sba_iommu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c index 188fab57d170..a7f542e784dd 100644 --- a/drivers/parisc/sba_iommu.c +++ b/drivers/parisc/sba_iommu.c @@ -1283,7 +1283,7 @@ sba_ioc_init_pluto(struct parisc_device *sba, struct ioc *ioc, int ioc_num) ** (one that doesn't overlap memory or LMMIO space) in the ** IBASE and IMASK registers. */ - ioc->ibase = READ_REG(ioc->ioc_hpa + IOC_IBASE); + ioc->ibase = READ_REG(ioc->ioc_hpa + IOC_IBASE) & ~0x1fffffULL; iova_space_size = ~(READ_REG(ioc->ioc_hpa + IOC_IMASK) & 0xFFFFFFFFUL) + 1; if ((ioc->ibase < 0xfed00000UL) && ((ioc->ibase + iova_space_size) > 0xfee00000UL)) { |