remoteproc: Fix wrong rvring index computation
authorClement Leger <cleger@kalray.eu>
Fri, 4 Oct 2019 07:37:36 +0000 (09:37 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 2 May 2020 06:48:41 +0000 (08:48 +0200)
commit4d23f544a32884e794946861f584027af916fd87
tree4aa7bc3c6f13f41932049caa2e65b5832915c2b2
parentaa73bcc376865c23e61dcebd467697b527901be8
remoteproc: Fix wrong rvring index computation

commit 00a0eec59ddbb1ce966b19097d8a8d2f777e726a upstream.

Index of rvring is computed using pointer arithmetic. However, since
rvring->rvdev->vring is the base of the vring array, computation
of rvring idx should be reversed. It previously lead to writing at negative
indices in the resource table.

Signed-off-by: Clement Leger <cleger@kalray.eu>
Link: https://lore.kernel.org/r/20191004073736.8327-1-cleger@kalray.eu
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Doug Anderson <dianders@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/remoteproc/remoteproc_core.c