From: Jon Ringle <[email protected]> This fixes the warnings:
drivers/tty/serial/sc16is7xx.c: In function 'sc16is7xx_handle_rx': >> drivers/tty/serial/sc16is7xx.c:548:1: warning: 'sc16is7xx_handle_rx' uses >> dynamic stack allocation [enabled by default] drivers/tty/serial/sc16is7xx.c: In function 'sc16is7xx_handle_tx': >> drivers/tty/serial/sc16is7xx.c:589:1: warning: 'sc16is7xx_handle_tx' uses >> dynamic stack allocation [enabled by default] Signed-off-by: Jon Ringle <[email protected]> --- drivers/tty/serial/sc16is7xx.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c index 7206a64..880cedd 100644 --- a/drivers/tty/serial/sc16is7xx.c +++ b/drivers/tty/serial/sc16is7xx.c @@ -317,6 +317,7 @@ struct sc16is7xx_port { #ifdef CONFIG_GPIOLIB struct gpio_chip gpio; #endif + unsigned char buf[SC16IS7XX_FIFO_SIZE]; struct sc16is7xx_one p[0]; }; @@ -471,16 +472,15 @@ static void sc16is7xx_handle_rx(struct uart_port *port, unsigned int rxlen, { struct sc16is7xx_port *s = dev_get_drvdata(port->dev); unsigned int lsr = 0, ch, flag, bytes_read, i; - u8 buf[port->fifosize]; bool read_lsr = (iir == SC16IS7XX_IIR_RLSE_SRC) ? true : false; - if (unlikely(rxlen >= port->fifosize)) { + if (unlikely(rxlen >= sizeof(s->buf))) { dev_warn_ratelimited(port->dev, "Port %i: Possible RX FIFO overrun: %d\n", port->line, rxlen); port->icount.buf_overrun++; /* Ensure sanity of RX level */ - rxlen = port->fifosize; + rxlen = sizeof(s->buf); } while (rxlen) { @@ -493,12 +493,12 @@ static void sc16is7xx_handle_rx(struct uart_port *port, unsigned int rxlen, lsr = 0; if (read_lsr) { - buf[0] = sc16is7xx_port_read(port, SC16IS7XX_RHR_REG); + s->buf[0] = sc16is7xx_port_read(port, SC16IS7XX_RHR_REG); bytes_read = 1; } else { regcache_cache_bypass(s->regmap, true); regmap_raw_read(s->regmap, SC16IS7XX_RHR_REG, - buf, rxlen); + s->buf, rxlen); regcache_cache_bypass(s->regmap, false); bytes_read = rxlen; } @@ -532,7 +532,7 @@ static void sc16is7xx_handle_rx(struct uart_port *port, unsigned int rxlen, } for (i = 0; i < bytes_read; ++i) { - ch = buf[i]; + ch = s->buf[i]; if (uart_handle_sysrq_char(port, ch)) continue; @@ -553,7 +553,6 @@ static void sc16is7xx_handle_tx(struct uart_port *port) struct sc16is7xx_port *s = dev_get_drvdata(port->dev); struct circ_buf *xmit = &port->state->xmit; unsigned int txlen, to_send, i; - u8 buf[port->fifosize]; if (unlikely(port->x_char)) { sc16is7xx_port_write(port, SC16IS7XX_THR_REG, port->x_char); @@ -577,11 +576,11 @@ static void sc16is7xx_handle_tx(struct uart_port *port) /* Convert to linear buffer */ for (i = 0; i < to_send; ++i) { - buf[i] = xmit->buf[xmit->tail]; + s->buf[i] = xmit->buf[xmit->tail]; xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); } regcache_cache_bypass(s->regmap, true); - regmap_raw_write(s->regmap, SC16IS7XX_THR_REG, buf, to_send); + regmap_raw_write(s->regmap, SC16IS7XX_THR_REG, s->buf, to_send); regcache_cache_bypass(s->regmap, false); } -- 1.8.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
