Thread (17 messages) 17 messages, 6 authors, 2012-01-25

Re: [PATCH v4] serial/efm32: add new driver

From: Uwe Kleine-König <hidden>
Date: 2012-01-25 08:41:41
Also in: linux-serial, lkml

On Wed, Jan 25, 2012 at 12:25:59AM -0800, Joe Perches wrote:
On Wed, 2012-01-25 at 09:05 +0100, Uwe Kleine-König wrote:
quoted
Signed-off-by: Uwe Kleine-König <redacted>
trivial comments below:
quoted
diff --git a/drivers/tty/serial/efm32-uart.c b/drivers/tty/serial/efm32-uart.c
[]
quoted
@@ -0,0 +1,830 @@
+#if defined(CONFIG_SERIAL_EFM32_UART_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
quoted
+static void efm32_uart_rx_chars(struct efm32_uart_port *efm_port,
+		struct tty_struct *tty)
+{
[]
quoted
+		if ((rxdata & UARTn_RXDATAX_FERR) &&
+				!(rxdata & UARTn_RXDATAX_RXDATA__MASK)) {
Perhaps better as:

		if ((rxdata & UARTn_RXDATAX_FERR) &&
		    !(rxdata & UARTn_RXDATAX_RXDATA__MASK)) {
This is how my editor does the indention. I'm sure this can be changed,
but I want the indention only to depend on the logical structure not on
where the opening parenthesis in the previous line is. This saves
context changes for future patches.
 
and RXDATA__MASK with 2 underscores?  perhaps just one _?
Yeah, I like seperating the register bit field name from that fact that
the #define holds a mask.
 
quoted
+static int efm32_uart_console_setup(struct console *co, char *options)
[]
quoted
+		for (i = 0; i < ARRAY_SIZE(efm32_uart_ports); ++i) {
+			if (efm32_uart_ports[i]) {
+				pr_warn("efm32-console: fall back to console index %u (from %hhi)\n",
+						i, co->index);
				pr_warn("fall back to ..."
[]
quoted
+	efm_port = efm32_uart_ports[co->index];
+	if (!efm_port) {
+		pr_warn("efm32-console: No port at %d\n", co->index);
		pr_warn("No port at..."
I intentionally did that, as these two messages are related to the
console part of the serial driver while the rest of the messages are
about the serial/tty stuff. And I didn't like changing the definition of
pr_fmt in the middle of the file.

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
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