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mei: hbm: remove variable length arrays 

Though VLA are supported by CC99 there are many cavities
and should be avoided.

'const size_t len = sizeof()' that we used may not be set
at the compile time hence generating VLA code.

This fixes also sparse warning
warning: Variable length array is used type.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomas Winkler 2017-03-20 15:04:04 +02:00 committed by Greg Kroah-Hartman
parent 394a77d0bb
commit 3fcbab6c4a
1 changed files with 14 additions and 15 deletions
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29
drivers/misc/mei/hbm.c
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@ -166,9 +166,8 @@ void mei_hbm_cl_hdr(struct mei_cl *cl, u8 hbm_cmd, void *buf, size_t len)
* *
* Return: 0 on success, <0 on failure. * Return: 0 on success, <0 on failure.
*/ */
static inline static inline int mei_hbm_cl_write(struct mei_device *dev, struct mei_cl *cl,
int mei_hbm_cl_write(struct mei_device *dev, struct mei_cl *cl, u8 hbm_cmd, void *buf, size_t len)
u8 hbm_cmd, u8 *buf, size_t len)
{ {
struct mei_msg_hdr mei_hdr; struct mei_msg_hdr mei_hdr;
@ -632,11 +631,11 @@ static int mei_hbm_stop_req(struct mei_device *dev)
*/ */
int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl) int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl)
{ {
const size_t len = sizeof(struct hbm_flow_control); struct hbm_flow_control req;
u8 buf[len];
cl_dbg(dev, cl, "sending flow control\n"); cl_dbg(dev, cl, "sending flow control\n");
return mei_hbm_cl_write(dev, cl, MEI_FLOW_CONTROL_CMD, buf, len); return mei_hbm_cl_write(dev, cl, MEI_FLOW_CONTROL_CMD,
&req, sizeof(req));
} }
/** /**
@ -710,10 +709,10 @@ static void mei_hbm_cl_tx_flow_ctrl_creds_res(struct mei_device *dev,
*/ */
int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl) int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl)
{ {
const size_t len = sizeof(struct hbm_client_connect_request); struct hbm_client_connect_request req;
u8 buf[len];
return mei_hbm_cl_write(dev, cl, CLIENT_DISCONNECT_REQ_CMD, buf, len); return mei_hbm_cl_write(dev, cl, CLIENT_DISCONNECT_REQ_CMD,
&req, sizeof(req));
} }
/** /**
@ -726,10 +725,10 @@ int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl)
*/ */
int mei_hbm_cl_disconnect_rsp(struct mei_device *dev, struct mei_cl *cl) int mei_hbm_cl_disconnect_rsp(struct mei_device *dev, struct mei_cl *cl)
{ {
const size_t len = sizeof(struct hbm_client_connect_response); struct hbm_client_connect_response resp;
u8 buf[len];
return mei_hbm_cl_write(dev, cl, CLIENT_DISCONNECT_RES_CMD, buf, len); return mei_hbm_cl_write(dev, cl, CLIENT_DISCONNECT_RES_CMD,
&resp, sizeof(resp));
} }
/** /**
@ -763,10 +762,10 @@ static void mei_hbm_cl_disconnect_res(struct mei_device *dev, struct mei_cl *cl,
*/ */
int mei_hbm_cl_connect_req(struct mei_device *dev, struct mei_cl *cl) int mei_hbm_cl_connect_req(struct mei_device *dev, struct mei_cl *cl)
{ {
const size_t len = sizeof(struct hbm_client_connect_request); struct hbm_client_connect_request req;
u8 buf[len];
return mei_hbm_cl_write(dev, cl, CLIENT_CONNECT_REQ_CMD, buf, len); return mei_hbm_cl_write(dev, cl, CLIENT_CONNECT_REQ_CMD,
&req, sizeof(req));
} }
/** /**