A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-10 14:19:09 -04:00
Code Issues Projects Releases Packages Wiki Activity

msm: ipa3: Fix to unmap sgt pages with correct size

Browse source 
scatterlist pages not unmapped properly, it was leading to
issue when mapping the same pages again. Adding changes
to store scatterlist information properly and unmap the
page with correct length.

Change-Id: If11926608f633ce1d66150b1e4b6c515adc48049
Signed-off-by: Ashok Vuyyuru <avuyyuru@codeaurora.org>
This commit is contained in:
Ashok Vuyyuru 2020-07-20 14:45:50 +05:30 • committed by Akshay Pandit
commit eca7b0f54f
1 changed files with 27 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

35
drivers/platform/msm/ipa/ipa_v3/ipa_client.c
View file

@ -420,14 +420,33 @@ int ipa3_smmu_map_peer_buff(u64 iova, u32 size, bool map, struct sg_table *sgt,
}
}
} else {
res = iommu_unmap(smmu_domain,
rounddown(iova, PAGE_SIZE),
roundup(size + iova - rounddown(iova, PAGE_SIZE),
PAGE_SIZE));
if (res != roundup(size + iova - rounddown(iova, PAGE_SIZE),
PAGE_SIZE)) {
IPAERR("Fail to unmap 0x%llx\n", iova);
return -EINVAL;
if (sgt != NULL) {
va = rounddown(iova, PAGE_SIZE);
len = 0;
for_each_sg(sgt->sgl, sg, sgt->nents, i) {
len = PAGE_ALIGN(sg->offset + sg->length);
res = iommu_unmap(smmu_domain, va,
roundup(len, PAGE_SIZE));
if (res !=
roundup(len, PAGE_SIZE)) {
IPAERR("Fail to unmap iova=%llx\n",
iova);
return -EINVAL;
}
va += len;
count++;
}
} else {
res = iommu_unmap(smmu_domain,
rounddown(iova, PAGE_SIZE),
roundup(size + iova -
rounddown(iova, PAGE_SIZE),
PAGE_SIZE));
if (res != roundup(size + iova -
rounddown(iova, PAGE_SIZE), PAGE_SIZE)) {
IPAERR("Fail to unmap 0x%llx\n", iova);
return -EINVAL;
}
}
}
IPADBG("Peer buff %s 0x%llx\n", map ? "map" : "unmap", iova);