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([2a0b:e7c0:0:107::70f]) by smtp.gmail.com with ESMTPSA id r1-20020a170906280100b006fefd1d5c2bsm10374858ejc.148.2022.06.22.23.24.32 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 22 Jun 2022 23:24:32 -0700 (PDT) Message-ID: <469ba743-69bd-b322-9e14-2f15cd1f9bda@kernel.org> Date: Thu, 23 Jun 2022 08:24:31 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.10.0 Subject: Re: [PATCH v2 1/6] serial: msm: Convert container_of UART_TO_MSM to static inline Content-Language: en-US To: =?UTF-8?Q?Ilpo_J=c3=a4rvinen?= , linux-serial@vger.kernel.org, Greg KH , Andy Gross , Bjorn Andersson , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org References: <20220621124958.3342-1-ilpo.jarvinen@linux.intel.com> <20220621124958.3342-2-ilpo.jarvinen@linux.intel.com> From: Jiri Slaby In-Reply-To: <20220621124958.3342-2-ilpo.jarvinen@linux.intel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org On 21. 06. 22, 14:49, Ilpo Järvinen wrote: > Create static inline instead of define. I know it's obvious, but next time, it would be nice if you specify why you're doing things, not what you're doing. I.e. amending something like: ", because it's more obvious, type safer, much more readable, and avoids bad macro expansion -- uart_port can "escape" as it is not in parentheses." > Signed-off-by: Ilpo Järvinen Reviewed-by: Jiri Slaby > --- > drivers/tty/serial/msm_serial.c | 49 +++++++++++++++++---------------- > 1 file changed, 26 insertions(+), 23 deletions(-) > > diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c > index e676ec761f18..15cab9c4b295 100644 > --- a/drivers/tty/serial/msm_serial.c > +++ b/drivers/tty/serial/msm_serial.c > @@ -181,7 +181,10 @@ struct msm_port { > struct msm_dma rx_dma; > }; > > -#define UART_TO_MSM(uart_port) container_of(uart_port, struct msm_port, uart) > +static inline struct msm_port *to_msm_port(struct uart_port *up) > +{ > + return container_of(up, struct msm_port, uart); > +} > > static > void msm_write(struct uart_port *port, unsigned int val, unsigned int off) > @@ -221,7 +224,7 @@ static void msm_serial_set_mnd_regs_tcxoby4(struct uart_port *port) > > static void msm_serial_set_mnd_regs(struct uart_port *port) > { > - struct msm_port *msm_port = UART_TO_MSM(port); > + struct msm_port *msm_port = to_msm_port(port); > > /* > * These registers don't exist so we change the clk input rate > @@ -404,7 +407,7 @@ static inline void msm_wait_for_xmitr(struct uart_port *port) > > static void msm_stop_tx(struct uart_port *port) > { > - struct msm_port *msm_port = UART_TO_MSM(port); > + struct msm_port *msm_port = to_msm_port(port); > > msm_port->imr &= ~UART_IMR_TXLEV; > msm_write(port, msm_port->imr, UART_IMR); > @@ -412,7 +415,7 @@ static void msm_stop_tx(struct uart_port *port) > > static void msm_start_tx(struct uart_port *port) > { > - struct msm_port *msm_port = UART_TO_MSM(port); > + struct msm_port *msm_port = to_msm_port(port); > struct msm_dma *dma = &msm_port->tx_dma; > > /* Already started in DMA mode */ > @@ -690,7 +693,7 @@ static void msm_start_rx_dma(struct msm_port *msm_port) > > static void msm_stop_rx(struct uart_port *port) > { > - struct msm_port *msm_port = UART_TO_MSM(port); > + struct msm_port *msm_port = to_msm_port(port); > struct msm_dma *dma = &msm_port->rx_dma; > > msm_port->imr &= ~(UART_IMR_RXLEV | UART_IMR_RXSTALE); > @@ -702,7 +705,7 @@ static void msm_stop_rx(struct uart_port *port) > > static void msm_enable_ms(struct uart_port *port) > { > - struct msm_port *msm_port = UART_TO_MSM(port); > + struct msm_port *msm_port = to_msm_port(port); > > msm_port->imr |= UART_IMR_DELTA_CTS; > msm_write(port, msm_port->imr, UART_IMR); > @@ -714,7 +717,7 @@ static void msm_handle_rx_dm(struct uart_port *port, unsigned int misr) > struct tty_port *tport = &port->state->port; > unsigned int sr; > int count = 0; > - struct msm_port *msm_port = UART_TO_MSM(port); > + struct msm_port *msm_port = to_msm_port(port); > > if ((msm_read(port, UART_SR) & UART_SR_OVERRUN)) { > port->icount.overrun++; > @@ -837,7 +840,7 @@ static void msm_handle_rx(struct uart_port *port) > static void msm_handle_tx_pio(struct uart_port *port, unsigned int tx_count) > { > struct circ_buf *xmit = &port->state->xmit; > - struct msm_port *msm_port = UART_TO_MSM(port); > + struct msm_port *msm_port = to_msm_port(port); > unsigned int num_chars; > unsigned int tf_pointer = 0; > void __iomem *tf; > @@ -883,7 +886,7 @@ static void msm_handle_tx_pio(struct uart_port *port, unsigned int tx_count) > > static void msm_handle_tx(struct uart_port *port) > { > - struct msm_port *msm_port = UART_TO_MSM(port); > + struct msm_port *msm_port = to_msm_port(port); > struct circ_buf *xmit = &msm_port->uart.state->xmit; > struct msm_dma *dma = &msm_port->tx_dma; > unsigned int pio_count, dma_count, dma_min; > @@ -947,7 +950,7 @@ static void msm_handle_delta_cts(struct uart_port *port) > static irqreturn_t msm_uart_irq(int irq, void *dev_id) > { > struct uart_port *port = dev_id; > - struct msm_port *msm_port = UART_TO_MSM(port); > + struct msm_port *msm_port = to_msm_port(port); > struct msm_dma *dma = &msm_port->rx_dma; > unsigned long flags; > unsigned int misr; > @@ -1002,7 +1005,7 @@ static unsigned int msm_get_mctrl(struct uart_port *port) > > static void msm_reset(struct uart_port *port) > { > - struct msm_port *msm_port = UART_TO_MSM(port); > + struct msm_port *msm_port = to_msm_port(port); > unsigned int mr; > > /* reset everything */ > @@ -1055,7 +1058,7 @@ static const struct msm_baud_map * > msm_find_best_baud(struct uart_port *port, unsigned int baud, > unsigned long *rate) > { > - struct msm_port *msm_port = UART_TO_MSM(port); > + struct msm_port *msm_port = to_msm_port(port); > unsigned int divisor, result; > unsigned long target, old, best_rate = 0, diff, best_diff = ULONG_MAX; > const struct msm_baud_map *entry, *end, *best; > @@ -1124,7 +1127,7 @@ static int msm_set_baud_rate(struct uart_port *port, unsigned int baud, > unsigned long *saved_flags) > { > unsigned int rxstale, watermark, mask; > - struct msm_port *msm_port = UART_TO_MSM(port); > + struct msm_port *msm_port = to_msm_port(port); > const struct msm_baud_map *entry; > unsigned long flags, rate; > > @@ -1185,7 +1188,7 @@ static int msm_set_baud_rate(struct uart_port *port, unsigned int baud, > > static void msm_init_clock(struct uart_port *port) > { > - struct msm_port *msm_port = UART_TO_MSM(port); > + struct msm_port *msm_port = to_msm_port(port); > > clk_prepare_enable(msm_port->clk); > clk_prepare_enable(msm_port->pclk); > @@ -1194,7 +1197,7 @@ static void msm_init_clock(struct uart_port *port) > > static int msm_startup(struct uart_port *port) > { > - struct msm_port *msm_port = UART_TO_MSM(port); > + struct msm_port *msm_port = to_msm_port(port); > unsigned int data, rfr_level, mask; > int ret; > > @@ -1246,7 +1249,7 @@ static int msm_startup(struct uart_port *port) > > static void msm_shutdown(struct uart_port *port) > { > - struct msm_port *msm_port = UART_TO_MSM(port); > + struct msm_port *msm_port = to_msm_port(port); > > msm_port->imr = 0; > msm_write(port, 0, UART_IMR); /* disable interrupts */ > @@ -1262,7 +1265,7 @@ static void msm_shutdown(struct uart_port *port) > static void msm_set_termios(struct uart_port *port, struct ktermios *termios, > struct ktermios *old) > { > - struct msm_port *msm_port = UART_TO_MSM(port); > + struct msm_port *msm_port = to_msm_port(port); > struct msm_dma *dma = &msm_port->rx_dma; > unsigned long flags; > unsigned int baud, mr; > @@ -1416,7 +1419,7 @@ static int msm_verify_port(struct uart_port *port, struct serial_struct *ser) > static void msm_power(struct uart_port *port, unsigned int state, > unsigned int oldstate) > { > - struct msm_port *msm_port = UART_TO_MSM(port); > + struct msm_port *msm_port = to_msm_port(port); > > switch (state) { > case 0: > @@ -1435,7 +1438,7 @@ static void msm_power(struct uart_port *port, unsigned int state, > #ifdef CONFIG_CONSOLE_POLL > static int msm_poll_get_char_single(struct uart_port *port) > { > - struct msm_port *msm_port = UART_TO_MSM(port); > + struct msm_port *msm_port = to_msm_port(port); > unsigned int rf_reg = msm_port->is_uartdm ? UARTDM_RF : UART_RF; > > if (!(msm_read(port, UART_SR) & UART_SR_RX_READY)) > @@ -1489,7 +1492,7 @@ static int msm_poll_get_char(struct uart_port *port) > { > u32 imr; > int c; > - struct msm_port *msm_port = UART_TO_MSM(port); > + struct msm_port *msm_port = to_msm_port(port); > > /* Disable all interrupts */ > imr = msm_read(port, UART_IMR); > @@ -1509,7 +1512,7 @@ static int msm_poll_get_char(struct uart_port *port) > static void msm_poll_put_char(struct uart_port *port, unsigned char c) > { > u32 imr; > - struct msm_port *msm_port = UART_TO_MSM(port); > + struct msm_port *msm_port = to_msm_port(port); > > /* Disable all interrupts */ > imr = msm_read(port, UART_IMR); > @@ -1677,7 +1680,7 @@ static void msm_console_write(struct console *co, const char *s, > BUG_ON(co->index < 0 || co->index >= UART_NR); > > port = msm_get_port_from_line(co->index); > - msm_port = UART_TO_MSM(port); > + msm_port = to_msm_port(port); > > __msm_console_write(port, s, count, msm_port->is_uartdm); > } > @@ -1808,7 +1811,7 @@ static int msm_serial_probe(struct platform_device *pdev) > > port = msm_get_port_from_line(line); > port->dev = &pdev->dev; > - msm_port = UART_TO_MSM(port); > + msm_port = to_msm_port(port); > > id = of_match_device(msm_uartdm_table, &pdev->dev); > if (id) -- js suse labs