linux-kernel - [PATCH v6 6/8] tty: serial: amba-pl011: fix miscellaneous checkpatch warnings

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Date:   Thu, 07 Dec 2023 18:56:11 +0100
From:   Théo Lebrun <theo.lebrun@...tlin.com>
To:     Russell King <linux@...linux.org.uk>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
        Linus Walleij <linus.walleij@...aro.org>,
        Grégory Clement <gregory.clement@...tlin.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Vladimir Kondratiev <vladimir.kondratiev@...ileye.com>,
        Tawfik Bayouk <tawfik.bayouk@...ileye.com>,
        Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        Théo Lebrun <theo.lebrun@...tlin.com>
Subject: [PATCH v6 6/8] tty: serial: amba-pl011: fix miscellaneous
 checkpatch warnings

Fix the following messages from checkpatch:

    $ ./scripts/checkpatch.pl --strict --file \
        drivers/tty/serial/amba-pl011.c

    ERROR: do not initialise statics to false
    WARNING: Possible unnecessary 'out of memory' message
    WARNING: Prefer 'unsigned int' to bare use of 'unsigned'
    WARNING: Prefer [subsystem eg: netdev]_info([subsystem]dev, ... then
             dev_info(dev, ... then pr_info(...  to
    CHECK: Prefer using the BIT macro

Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Théo Lebrun <theo.lebrun@...tlin.com>
---
 drivers/tty/serial/amba-pl011.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 3c657bac2359..d141af8f8a5f 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -51,7 +51,7 @@
 #define AMBA_ISR_PASS_LIMIT	256
 
 #define UART_DR_ERROR		(UART011_DR_OE | UART011_DR_BE | UART011_DR_PE | UART011_DR_FE)
-#define UART_DUMMY_DR_RX	(1 << 16)
+#define UART_DUMMY_DR_RX	BIT(16)
 
 enum {
 	REG_DR,
@@ -1109,7 +1109,6 @@ static void pl011_dma_startup(struct uart_amba_port *uap)
 
 	uap->dmatx.buf = kmalloc(PL011_DMA_BUFFER_SIZE, GFP_KERNEL | __GFP_DMA);
 	if (!uap->dmatx.buf) {
-		dev_err(uap->port.dev, "no memory for DMA TX buffer\n");
 		uap->port.fifosize = uap->fifosize;
 		return;
 	}
@@ -2528,7 +2527,7 @@ static void qdf2400_e44_putc(struct uart_port *port, unsigned char c)
 		cpu_relax();
 }
 
-static void qdf2400_e44_early_write(struct console *con, const char *s, unsigned n)
+static void qdf2400_e44_early_write(struct console *con, const char *s, unsigned int n)
 {
 	struct earlycon_device *dev = con->data;
 
@@ -2547,7 +2546,7 @@ static void pl011_putc(struct uart_port *port, unsigned char c)
 		cpu_relax();
 }
 
-static void pl011_early_write(struct console *con, const char *s, unsigned n)
+static void pl011_early_write(struct console *con, const char *s, unsigned int n)
 {
 	struct earlycon_device *dev = con->data;
 
@@ -2653,8 +2652,8 @@ static struct uart_driver amba_reg = {
 static int pl011_probe_dt_alias(int index, struct device *dev)
 {
 	struct device_node *np;
-	static bool seen_dev_with_alias = false;
-	static bool seen_dev_without_alias = false;
+	static bool seen_dev_with_alias;
+	static bool seen_dev_without_alias;
 	int ret = index;
 
 	if (!IS_ENABLED(CONFIG_OF))
@@ -2996,7 +2995,7 @@ static struct amba_driver pl011_driver = {
 
 static int __init pl011_init(void)
 {
-	printk(KERN_INFO "Serial: AMBA PL011 UART driver\n");
+	pr_info("Serial: AMBA PL011 UART driver\n");
 
 	if (platform_driver_register(&arm_sbsa_uart_platform_driver))
 		pr_warn("could not register SBSA UART platform driver\n");

-- 
2.43.0