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misc: fastrpc: consider address offset before sending to DSP

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While passing address phy address to DSP, take care of the offset
calculated from virtual address vma.

Fixes: c68cfb718c8f ("misc: fastrpc: Add support for context Invoke method")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Srinivas Kandagatla 2019-03-07 10:12:26 +00:00 committed by Greg Kroah-Hartman
parent 977e6c8d1d
commit 80f3afd72b
1 changed files with 8 additions and 0 deletions
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8
drivers/misc/fastrpc.c
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@ -679,8 +679,16 @@ static int fastrpc_get_args(u32 kernel, struct fastrpc_invoke_ctx *ctx)
pages[i].size = roundup(len, PAGE_SIZE); pages[i].size = roundup(len, PAGE_SIZE);
if (ctx->maps[i]) { if (ctx->maps[i]) {
struct vm_area_struct *vma = NULL;
rpra[i].pv = (u64) ctx->args[i].ptr; rpra[i].pv = (u64) ctx->args[i].ptr;
pages[i].addr = ctx->maps[i]->phys; pages[i].addr = ctx->maps[i]->phys;
vma = find_vma(current->mm, ctx->args[i].ptr);
if (vma)
pages[i].addr += ctx->args[i].ptr -
vma->vm_start;
} else { } else {
rlen -= ALIGN(args, FASTRPC_ALIGN) - args; rlen -= ALIGN(args, FASTRPC_ALIGN) - args;
args = ALIGN(args, FASTRPC_ALIGN); args = ALIGN(args, FASTRPC_ALIGN);