drivers: serial: fix potential overflow in fifo_fill and fifo_read
Change the type of num_tx/num_rx to avoid overflow. Fixes #80599 Signed-off-by: Zheng Wu <ken4647@outlook.com>
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de1e76fa4e
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15 changed files with 36 additions and 42 deletions
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@ -101,7 +101,7 @@ static int leuart_gecko_fifo_fill(const struct device *dev,
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int len)
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{
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LEUART_TypeDef *base = DEV_BASE(dev);
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uint8_t num_tx = 0U;
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int num_tx = 0U;
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while ((len - num_tx > 0) &&
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(base->STATUS & LEUART_STATUS_TXBL)) {
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@ -116,7 +116,7 @@ static int leuart_gecko_fifo_read(const struct device *dev, uint8_t *rx_data,
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const int len)
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{
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LEUART_TypeDef *base = DEV_BASE(dev);
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uint8_t num_rx = 0U;
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int num_rx = 0U;
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while ((len - num_rx > 0) &&
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(base->STATUS & LEUART_STATUS_RXDATAV)) {
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@ -222,7 +222,7 @@ static int uart_gecko_fifo_fill(const struct device *dev, const uint8_t *tx_data
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int len)
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{
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const struct uart_gecko_config *config = dev->config;
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uint8_t num_tx = 0U;
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int num_tx = 0U;
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while ((len - num_tx > 0) &&
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(config->base->STATUS & USART_STATUS_TXBL)) {
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@ -237,7 +237,7 @@ static int uart_gecko_fifo_read(const struct device *dev, uint8_t *rx_data,
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const int len)
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{
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const struct uart_gecko_config *config = dev->config;
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uint8_t num_rx = 0U;
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int num_rx = 0U;
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while ((len - num_rx > 0) &&
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(config->base->STATUS & USART_STATUS_RXDATAV)) {
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@ -179,7 +179,7 @@ static int uart_mcux_fifo_fill(const struct device *dev,
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int len)
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{
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const struct uart_mcux_config *config = dev->config;
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uint8_t num_tx = 0U;
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int num_tx = 0U;
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while ((len - num_tx > 0) &&
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(UART_GetStatusFlags(config->base) & kUART_TxDataRegEmptyFlag)) {
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@ -194,7 +194,7 @@ static int uart_mcux_fifo_read(const struct device *dev, uint8_t *rx_data,
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const int len)
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{
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const struct uart_mcux_config *config = dev->config;
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uint8_t num_rx = 0U;
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int num_rx = 0U;
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while ((len - num_rx > 0) &&
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(UART_GetStatusFlags(config->base) & kUART_RxDataRegFullFlag)) {
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@ -146,7 +146,7 @@ static int mcux_flexcomm_fifo_fill(const struct device *dev,
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int len)
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{
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const struct mcux_flexcomm_config *config = dev->config;
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uint8_t num_tx = 0U;
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int num_tx = 0U;
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while ((len - num_tx > 0) &&
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(USART_GetStatusFlags(config->base)
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@ -162,7 +162,7 @@ static int mcux_flexcomm_fifo_read(const struct device *dev, uint8_t *rx_data,
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const int len)
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{
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const struct mcux_flexcomm_config *config = dev->config;
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uint8_t num_rx = 0U;
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int num_rx = 0U;
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while ((len - num_rx > 0) &&
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(USART_GetStatusFlags(config->base)
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@ -86,7 +86,7 @@ static int mcux_iuart_fifo_fill(const struct device *dev,
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int len)
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{
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const struct mcux_iuart_config *config = dev->config;
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uint8_t num_tx = 0U;
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int num_tx = 0U;
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while ((len - num_tx > 0) &&
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(UART_GetStatusFlag(config->base, kUART_TxEmptyFlag))) {
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@ -101,7 +101,7 @@ static int mcux_iuart_fifo_read(const struct device *dev, uint8_t *rx_data,
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const int len)
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{
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const struct mcux_iuart_config *config = dev->config;
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uint8_t num_rx = 0U;
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int num_rx = 0U;
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while ((len - num_rx > 0) &&
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(UART_GetStatusFlag(config->base, kUART_RxDataReadyFlag))) {
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@ -89,7 +89,7 @@ static int mcux_lpsci_fifo_fill(const struct device *dev,
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int len)
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{
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const struct mcux_lpsci_config *config = dev->config;
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uint8_t num_tx = 0U;
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int num_tx = 0U;
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while ((len - num_tx > 0) &&
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(LPSCI_GetStatusFlags(config->base)
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@ -105,7 +105,7 @@ static int mcux_lpsci_fifo_read(const struct device *dev, uint8_t *rx_data,
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const int len)
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{
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const struct mcux_lpsci_config *config = dev->config;
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uint8_t num_rx = 0U;
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int num_rx = 0U;
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while ((len - num_rx > 0) &&
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(LPSCI_GetStatusFlags(config->base)
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@ -233,7 +233,7 @@ static int mcux_lpuart_fifo_fill(const struct device *dev,
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int len)
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{
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const struct mcux_lpuart_config *config = dev->config;
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uint8_t num_tx = 0U;
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int num_tx = 0U;
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while ((len - num_tx > 0) &&
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(LPUART_GetStatusFlags(config->base)
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@ -248,7 +248,7 @@ static int mcux_lpuart_fifo_read(const struct device *dev, uint8_t *rx_data,
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const int len)
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{
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const struct mcux_lpuart_config *config = dev->config;
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uint8_t num_rx = 0U;
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int num_rx = 0U;
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while ((len - num_rx > 0) &&
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(LPUART_GetStatusFlags(config->base)
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@ -786,7 +786,7 @@ static int uart_nrfx_fifo_fill(const struct device *dev,
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const uint8_t *tx_data,
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int len)
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{
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uint8_t num_tx = 0U;
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int num_tx = 0U;
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while ((len - num_tx > 0) &&
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event_txdrdy_check()) {
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@ -806,7 +806,7 @@ static int uart_nrfx_fifo_read(const struct device *dev,
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uint8_t *rx_data,
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const int size)
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{
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uint8_t num_rx = 0U;
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int num_rx = 0U;
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while ((size - num_rx > 0) &&
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nrf_uart_event_check(uart0_addr, NRF_UART_EVENT_RXDRDY)) {
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@ -317,7 +317,7 @@ static int pl011_runtime_config_get(const struct device *dev,
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static int pl011_fifo_fill(const struct device *dev,
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const uint8_t *tx_data, int len)
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{
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uint8_t num_tx = 0U;
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int num_tx = 0U;
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while (!(get_uart(dev)->fr & PL011_FR_TXFF) && (len - num_tx > 0)) {
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get_uart(dev)->dr = tx_data[num_tx++];
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@ -328,7 +328,7 @@ static int pl011_fifo_fill(const struct device *dev,
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static int pl011_fifo_read(const struct device *dev,
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uint8_t *rx_data, const int len)
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{
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uint8_t num_rx = 0U;
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int num_rx = 0U;
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while ((len - num_rx > 0) && !(get_uart(dev)->fr & PL011_FR_RXFE)) {
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rx_data[num_rx++] = get_uart(dev)->dr;
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@ -256,7 +256,7 @@ static int uart_ra_sci_b_fifo_fill(const struct device *dev, const uint8_t *tx_d
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{
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struct uart_ra_sci_b_data *data = dev->data;
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const struct uart_ra_sci_b_config *cfg = dev->config;
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uint8_t num_tx = 0U;
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int num_tx = 0U;
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if (IS_ENABLED(CONFIG_UART_RA_SCI_B_UART_FIFO_ENABLE) && data->sci.fifo_depth > 0) {
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while ((size - num_tx > 0) && cfg->regs->FTSR != 0x10U) {
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@ -281,7 +281,7 @@ static int uart_ra_sci_b_fifo_read(const struct device *dev, uint8_t *rx_data, c
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{
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struct uart_ra_sci_b_data *data = dev->data;
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const struct uart_ra_sci_b_config *cfg = dev->config;
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uint8_t num_rx = 0U;
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int num_rx = 0U;
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if (IS_ENABLED(CONFIG_UART_RA_SCI_B_UART_FIFO_ENABLE) && data->sci.fifo_depth > 0) {
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while ((size - num_rx > 0) && cfg->regs->FRSR_b.R > 0U) {
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@ -301,7 +301,7 @@ static int uart_ra_sci_fifo_fill(const struct device *dev, const uint8_t *tx_dat
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{
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struct uart_ra_sci_data *data = dev->data;
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const struct uart_ra_sci_config *cfg = dev->config;
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uint8_t num_tx = 0U;
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int num_tx = 0U;
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#if CONFIG_UART_RA_SCI_UART_FIFO_ENABLE
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if (data->sci.fifo_depth != 0) {
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@ -326,7 +326,7 @@ static int uart_ra_sci_fifo_read(const struct device *dev, uint8_t *rx_data, con
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{
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struct uart_ra_sci_data *data = dev->data;
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const struct uart_ra_sci_config *cfg = dev->config;
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uint8_t num_rx = 0U;
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int num_rx = 0U;
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#if CONFIG_UART_RA_SCI_UART_FIFO_ENABLE
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if (data->sci.fifo_depth != 0) {
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@ -93,7 +93,7 @@ static int rv32m1_lpuart_fifo_fill(const struct device *dev,
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int len)
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{
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const struct rv32m1_lpuart_config *config = dev->config;
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uint8_t num_tx = 0U;
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int num_tx = 0U;
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while ((len - num_tx > 0) &&
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(LPUART_GetStatusFlags(config->base)
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@ -109,7 +109,7 @@ static int rv32m1_lpuart_fifo_read(const struct device *dev, uint8_t *rx_data,
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const int len)
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{
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const struct rv32m1_lpuart_config *config = dev->config;
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uint8_t num_rx = 0U;
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int num_rx = 0U;
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while ((len - num_rx > 0) &&
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(LPUART_GetStatusFlags(config->base)
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@ -313,7 +313,7 @@ static int uart_stellaris_fifo_fill(const struct device *dev,
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int len)
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{
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const struct uart_stellaris_config *config = dev->config;
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uint8_t num_tx = 0U;
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int num_tx = 0U;
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while ((len - num_tx > 0) && ((config->uart->fr & UARTFR_TXFF) == 0U)) {
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config->uart->dr = (uint32_t)tx_data[num_tx++];
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@ -336,7 +336,7 @@ static int uart_stellaris_fifo_read(const struct device *dev,
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const int size)
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{
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const struct uart_stellaris_config *config = dev->config;
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uint8_t num_rx = 0U;
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int num_rx = 0U;
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while ((size - num_rx > 0) && ((config->uart->fr & UARTFR_RXFE) == 0U)) {
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rx_data[num_rx++] = (uint8_t)config->uart->dr;
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@ -816,15 +816,14 @@ static inline void __uart_stm32_get_clock(const struct device *dev)
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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typedef void (*fifo_fill_fn)(USART_TypeDef *usart, const void *tx_data,
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const uint8_t offset);
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typedef void (*fifo_fill_fn)(USART_TypeDef *usart, const void *tx_data, const int offset);
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static int uart_stm32_fifo_fill_visitor(const struct device *dev, const void *tx_data, int size,
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fifo_fill_fn fill_fn)
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{
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const struct uart_stm32_config *config = dev->config;
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USART_TypeDef *usart = config->usart;
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uint8_t num_tx = 0U;
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int num_tx = 0U;
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unsigned int key;
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if (!LL_USART_IsActiveFlag_TXE(usart)) {
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@ -847,8 +846,7 @@ static int uart_stm32_fifo_fill_visitor(const struct device *dev, const void *tx
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return num_tx;
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}
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static void fifo_fill_with_u8(USART_TypeDef *usart,
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const void *tx_data, const uint8_t offset)
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static void fifo_fill_with_u8(USART_TypeDef *usart, const void *tx_data, const int offset)
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{
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const uint8_t *data = (const uint8_t *)tx_data;
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/* Send a character (8bit) */
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fifo_fill_with_u8);
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}
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typedef void (*fifo_read_fn)(USART_TypeDef *usart, void *rx_data,
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const uint8_t offset);
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typedef void (*fifo_read_fn)(USART_TypeDef *usart, void *rx_data, const int offset);
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static int uart_stm32_fifo_read_visitor(const struct device *dev, void *rx_data, const int size,
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fifo_read_fn read_fn)
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{
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const struct uart_stm32_config *config = dev->config;
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USART_TypeDef *usart = config->usart;
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uint8_t num_rx = 0U;
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int num_rx = 0U;
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while ((size - num_rx > 0) && LL_USART_IsActiveFlag_RXNE(usart)) {
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/* RXNE flag will be cleared upon read from DR|RDR register */
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return num_rx;
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}
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static void fifo_read_with_u8(USART_TypeDef *usart, void *rx_data,
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const uint8_t offset)
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static void fifo_read_with_u8(USART_TypeDef *usart, void *rx_data, const int offset)
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{
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uint8_t *data = (uint8_t *)rx_data;
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#ifdef CONFIG_UART_WIDE_DATA
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static void fifo_fill_with_u16(USART_TypeDef *usart,
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const void *tx_data, const uint8_t offset)
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static void fifo_fill_with_u16(USART_TypeDef *usart, const void *tx_data, const int offset)
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{
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const uint16_t *data = (const uint16_t *)tx_data;
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@ -933,8 +928,7 @@ static int uart_stm32_fifo_fill_u16(const struct device *dev, const uint16_t *tx
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fifo_fill_with_u16);
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}
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static void fifo_read_with_u16(USART_TypeDef *usart, void *rx_data,
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const uint8_t offset)
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static void fifo_read_with_u16(USART_TypeDef *usart, void *rx_data, const int offset)
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{
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uint16_t *data = (uint16_t *)rx_data;
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@ -167,7 +167,7 @@ int usart_gd32_fifo_fill(const struct device *dev, const uint8_t *tx_data,
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int len)
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{
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const struct gd32_usart_config *const cfg = dev->config;
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uint8_t num_tx = 0U;
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int num_tx = 0U;
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while ((len - num_tx > 0) &&
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usart_flag_get(cfg->reg, USART_FLAG_TBE)) {
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const int size)
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{
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const struct gd32_usart_config *const cfg = dev->config;
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uint8_t num_rx = 0U;
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int num_rx = 0U;
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while ((size - num_rx > 0) &&
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usart_flag_get(cfg->reg, USART_FLAG_RBNE)) {
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