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(parent: 2cbc277) | patch
ARM: Qualify enabling of swiotlb_init()
authorFlorian Fainelli <f.fainelli@gmail.com>
Fri, 19 Mar 2021 04:03:33 +0000 (21:03 -0700)
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Fri, 19 Mar 2021 05:00:18 +0000 (05:00 +0000)
commitfcf044891c84e38fc90eb736b818781bccf94e38
tree4f6af8d4dab1566a3e9b3a64d563e2aad61ef836tree | snapshot
parent2cbc2776efe4faed0e17c48ae076aa03a0fcc61fcommit | diff
ARM: Qualify enabling of swiotlb_init()

We do not need a SWIOTLB unless we have DRAM that is addressable beyond
the arm_dma_limit. Compare max_pfn with arm_dma_pfn_limit to determine
whether we do need a SWIOTLB to be initialized.

Fixes: ad3c7b18c5b3 ("arm: use swiotlb for bounce buffering on LPAE configs")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
arch/arm/mm/init.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git