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Subject: media: siano: Refactor struct sms_msg_data Author: Ricardo Ribalda <riba...@chromium.org> Date: Mon May 27 21:08:56 2024 +0000 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 <riba...@chromium.org> Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl> drivers/media/common/siano/smscoreapi.c | 10 +++++----- drivers/media/common/siano/smscoreapi.h | 2 +- drivers/media/common/siano/smsdvb-main.c | 4 ++-- drivers/media/common/siano/smsendian.c | 8 +++++--- 4 files changed, 13 insertions(+), 11 deletions(-) --- diff --git a/drivers/media/common/siano/smscoreapi.c b/drivers/media/common/siano/smscoreapi.c index 7ebcb10126c9..b6f1eb5dbbdf 100644 --- a/drivers/media/common/siano/smscoreapi.c +++ b/drivers/media/common/siano/smscoreapi.c @@ -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; } diff --git a/drivers/media/common/siano/smscoreapi.h b/drivers/media/common/siano/smscoreapi.h index f8789ee0d554..46dc74ac9318 100644 --- a/drivers/media/common/siano/smscoreapi.h +++ b/drivers/media/common/siano/smscoreapi.h @@ -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 { diff --git a/drivers/media/common/siano/smsdvb-main.c b/drivers/media/common/siano/smsdvb-main.c index d893a0e4672b..44d8fe8b220e 100644 --- a/drivers/media/common/siano/smsdvb-main.c +++ b/drivers/media/common/siano/smsdvb-main.c @@ -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)); diff --git a/drivers/media/common/siano/smsendian.c b/drivers/media/common/siano/smsendian.c index a3573814919b..b957970c7d97 100644 --- a/drivers/media/common/siano/smsendian.c +++ b/drivers/media/common/siano/smsendian.c @@ -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; }
