| Message ID | fd52d6ddce285474615e4bd96931ab12a0da8199.1684278538.git.gustavoars@kernel.org (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | media: venus: hfi_cmds: Replace one-element array with flexible-array member | expand |
On Tue, May 16, 2023 at 05:14:49PM -0600, Gustavo A. R. Silva wrote: > Prefer struct_size() over open-coded versions of idiom: > > sizeof(struct-with-flex-array) + sizeof(typeof-flex-array-elements) * count > > where count is the max number of items the flexible array is supposed to > contain. > > Link: https://github.com/KSPP/linux/issues/160 > Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org>
On 5/17/2023 4:44 AM, Gustavo A. R. Silva wrote: > Prefer struct_size() over open-coded versions of idiom: > > sizeof(struct-with-flex-array) + sizeof(typeof-flex-array-elements) * count > > where count is the max number of items the flexible array is supposed to > contain. > > Link: https://github.com/KSPP/linux/issues/160 > Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> The patch looks good. As stated in previous patch, lets combine this into a single series. > --- > drivers/media/platform/qcom/venus/hfi_cmds.c | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) > > diff --git a/drivers/media/platform/qcom/venus/hfi_cmds.c b/drivers/media/platform/qcom/venus/hfi_cmds.c > index 21d1b3c90dc0..3f74d518ad08 100644 > --- a/drivers/media/platform/qcom/venus/hfi_cmds.c > +++ b/drivers/media/platform/qcom/venus/hfi_cmds.c > @@ -209,8 +209,8 @@ int pkt_session_set_buffers(struct hfi_session_set_buffers_pkt *pkt, > } > } else { > pkt->extradata_size = 0; > - pkt->shdr.hdr.size = sizeof(*pkt) + > - bd->num_buffers * sizeof(u32); > + pkt->shdr.hdr.size = struct_size(pkt, buffer_info, > + bd->num_buffers); > for (i = 0; i < pkt->num_buffers; i++) > pkt->buffer_info[i] = bd->device_addr; > } > @@ -251,8 +251,8 @@ int pkt_session_unset_buffers(struct hfi_session_release_buffer_pkt *pkt, > > pkt->extradata_size = 0; > pkt->shdr.hdr.size = > - sizeof(struct hfi_session_set_buffers_pkt) + > - bd->num_buffers * sizeof(u32); > + struct_size((struct hfi_session_set_buffers_pkt *)0, > + buffer_info, bd->num_buffers); > } > > pkt->response_req = bd->response_required;
diff --git a/drivers/media/platform/qcom/venus/hfi_cmds.c b/drivers/media/platform/qcom/venus/hfi_cmds.c index 21d1b3c90dc0..3f74d518ad08 100644 --- a/drivers/media/platform/qcom/venus/hfi_cmds.c +++ b/drivers/media/platform/qcom/venus/hfi_cmds.c @@ -209,8 +209,8 @@ int pkt_session_set_buffers(struct hfi_session_set_buffers_pkt *pkt, } } else { pkt->extradata_size = 0; - pkt->shdr.hdr.size = sizeof(*pkt) + - bd->num_buffers * sizeof(u32); + pkt->shdr.hdr.size = struct_size(pkt, buffer_info, + bd->num_buffers); for (i = 0; i < pkt->num_buffers; i++) pkt->buffer_info[i] = bd->device_addr; } @@ -251,8 +251,8 @@ int pkt_session_unset_buffers(struct hfi_session_release_buffer_pkt *pkt, pkt->extradata_size = 0; pkt->shdr.hdr.size = - sizeof(struct hfi_session_set_buffers_pkt) + - bd->num_buffers * sizeof(u32); + struct_size((struct hfi_session_set_buffers_pkt *)0, + buffer_info, bd->num_buffers); } pkt->response_req = bd->response_required;
Prefer struct_size() over open-coded versions of idiom: sizeof(struct-with-flex-array) + sizeof(typeof-flex-array-elements) * count where count is the max number of items the flexible array is supposed to contain. Link: https://github.com/KSPP/linux/issues/160 Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> --- drivers/media/platform/qcom/venus/hfi_cmds.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)