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media: siano: Refactor struct sms_msg_data

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Replace a single element array with a single element field.

The endianness conversion code seems to support multiple elements. To
avoid changing behavior a pointer to the single element has been used.

This is safer than moving to a flex array, because in that case the
structure size changes.

This fixes the following cocci warning:
drivers/media/common/siano/smscoreapi.h:619:5-13: WARNING use flexible-array member instead (https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays)

Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This commit is contained in:
Ricardo Ribalda 2024-05-27 21:08:56 +00:00 committed by Hans Verkuil
parent 63916c3dec
commit 6c69a73adf
4 changed files with 13 additions and 11 deletions
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10
drivers/media/common/siano/smscoreapi.c
View File

@ -839,7 +839,7 @@ static int smscore_configure_board(struct smscore_device_t *coredev)
mtu_msg.x_msg_header.msg_flags = 0;
mtu_msg.x_msg_header.msg_type = MSG_SMS_SET_MAX_TX_MSG_LEN_REQ;
mtu_msg.x_msg_header.msg_length = sizeof(mtu_msg);
mtu_msg.msg_data[0] = board->mtu;
mtu_msg.msg_data = board->mtu;
coredev->sendrequest_handler(coredev->context, &mtu_msg,
sizeof(mtu_msg));
@ -852,7 +852,7 @@ static int smscore_configure_board(struct smscore_device_t *coredev)
SMS_INIT_MSG(&crys_msg.x_msg_header,
MSG_SMS_NEW_CRYSTAL_REQ,
sizeof(crys_msg));
crys_msg.msg_data[0] = board->crystal;
crys_msg.msg_data = board->crystal;
coredev->sendrequest_handler(coredev->context, &crys_msg,
sizeof(crys_msg));
@ -1306,7 +1306,7 @@ static int smscore_init_device(struct smscore_device_t *coredev, int mode)
msg = (struct sms_msg_data *)SMS_ALIGN_ADDRESS(buffer);
SMS_INIT_MSG(&msg->x_msg_header, MSG_SMS_INIT_DEVICE_REQ,
sizeof(struct sms_msg_data));
msg->msg_data[0] = mode;
msg->msg_data = mode;
rc = smscore_sendrequest_and_wait(coredev, msg,
msg->x_msg_header. msg_length,
@ -1394,7 +1394,7 @@ int smscore_set_device_mode(struct smscore_device_t *coredev, int mode)
SMS_INIT_MSG(&msg->x_msg_header, MSG_SMS_INIT_DEVICE_REQ,
sizeof(struct sms_msg_data));
msg->msg_data[0] = mode;
msg->msg_data = mode;
rc = smscore_sendrequest_and_wait(
coredev, msg, msg->x_msg_header.msg_length,
@ -1554,7 +1554,7 @@ void smscore_onresponse(struct smscore_device_t *coredev,
struct sms_msg_data *validity = (struct sms_msg_data *) phdr;
pr_debug("MSG_SMS_DATA_VALIDITY_RES, checksum = 0x%x\n",
validity->msg_data[0]);
validity->msg_data);
complete(&coredev->data_validity_done);
break;
}

2
drivers/media/common/siano/smscoreapi.h
View File

@ -616,7 +616,7 @@ struct sms_msg_hdr {
struct sms_msg_data {
struct sms_msg_hdr x_msg_header;
u32 msg_data[1];
u32 msg_data;
};
struct sms_msg_data2 {

4
drivers/media/common/siano/smsdvb-main.c
View File

@ -689,7 +689,7 @@ static int smsdvb_start_feed(struct dvb_demux_feed *feed)
pid_msg.x_msg_header.msg_flags = 0;
pid_msg.x_msg_header.msg_type = MSG_SMS_ADD_PID_FILTER_REQ;
pid_msg.x_msg_header.msg_length = sizeof(pid_msg);
pid_msg.msg_data[0] = feed->pid;
pid_msg.msg_data = feed->pid;
return smsclient_sendrequest(client->smsclient,
&pid_msg, sizeof(pid_msg));
@ -711,7 +711,7 @@ static int smsdvb_stop_feed(struct dvb_demux_feed *feed)
pid_msg.x_msg_header.msg_flags = 0;
pid_msg.x_msg_header.msg_type = MSG_SMS_REMOVE_PID_FILTER_REQ;
pid_msg.x_msg_header.msg_length = sizeof(pid_msg);
pid_msg.msg_data[0] = feed->pid;
pid_msg.msg_data = feed->pid;
return smsclient_sendrequest(client->smsclient,
&pid_msg, sizeof(pid_msg));

8
drivers/media/common/siano/smsendian.c
View File

@ -20,11 +20,12 @@ void smsendian_handle_tx_message(void *buffer)
struct sms_msg_data *msg = buffer;
int i;
int msg_words;
u32 *msg_data = &msg->msg_data;
switch (msg->x_msg_header.msg_type) {
case MSG_SMS_DATA_DOWNLOAD_REQ:
{
msg->msg_data[0] = le32_to_cpu((__force __le32)(msg->msg_data[0]));
msg->msg_data = le32_to_cpu((__force __le32)(msg->msg_data));
break;
}
@ -33,7 +34,7 @@ void smsendian_handle_tx_message(void *buffer)
sizeof(struct sms_msg_hdr))/4;
for (i = 0; i < msg_words; i++)
msg->msg_data[i] = le32_to_cpu((__force __le32)msg->msg_data[i]);
msg_data[i] = le32_to_cpu((__force __le32)msg_data[i]);
break;
}
@ -66,11 +67,12 @@ void smsendian_handle_rx_message(void *buffer)
default:
{
u32 *msg_data = &msg->msg_data;
msg_words = (msg->x_msg_header.msg_length -
sizeof(struct sms_msg_hdr))/4;
for (i = 0; i < msg_words; i++)
msg->msg_data[i] = le32_to_cpu((__force __le32)msg->msg_data[i]);
msg_data[i] = le32_to_cpu((__force __le32)msg_data[i]);
break;
}