From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Girish Mahadevan <girishm@codeaurora.org>,
Mohammed Khajapasha <mkhaja@codeaurora.org>,
Karthikeyan Ramasubramanian <kramasub@codeaurora.org>,
Jiri Slaby <jslaby@suse.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
Geert Uytterhoeven <geert@linux-m68k.org>
Subject: [PATCH] tty: serial: qcom_geni_serial: Drop useless check for dev.of_node
Date: Thu, 23 Aug 2018 23:30:27 +0200 [thread overview]
Message-ID: <20180823213027.18856-1-geert@linux-m68k.org> (raw)
With gcc 4.1.2:
drivers/tty/serial/qcom_geni_serial.c: In function ‘qcom_geni_serial_probe’:
drivers/tty/serial/qcom_geni_serial.c:1261: warning: ‘drv’ may be used uninitialized in this function
Indeed, if dev.of_node is NULL, drv will be used uninitialized, and
dereferenced in uart_add_one_port(). However, as this driver supports
DT only, dev.of_node will always be valid.
Hence remove the useless check for dev.of_node, killing the warning as a
side effect.
Fixes: 8a8a66a1a18a1dbd ("tty: serial: qcom_geni_serial: Add support for flow control")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
---
drivers/tty/serial/qcom_geni_serial.c | 14 ++++++--------
1 file changed, 6 insertions(+), 8 deletions(-)
diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
index 29ec343872466e49..1cfbb6745a8cc7d0 100644
--- a/drivers/tty/serial/qcom_geni_serial.c
+++ b/drivers/tty/serial/qcom_geni_serial.c
@@ -1263,14 +1263,12 @@ static int qcom_geni_serial_probe(struct platform_device *pdev)
if (of_device_is_compatible(pdev->dev.of_node, "qcom,geni-debug-uart"))
console = true;
- if (pdev->dev.of_node) {
- if (console) {
- drv = &qcom_geni_console_driver;
- line = of_alias_get_id(pdev->dev.of_node, "serial");
- } else {
- drv = &qcom_geni_uart_driver;
- line = of_alias_get_id(pdev->dev.of_node, "hsuart");
- }
+ if (console) {
+ drv = &qcom_geni_console_driver;
+ line = of_alias_get_id(pdev->dev.of_node, "serial");
+ } else {
+ drv = &qcom_geni_uart_driver;
+ line = of_alias_get_id(pdev->dev.of_node, "hsuart");
}
port = get_port_from_line(line, console);
--
2.17.1
reply other threads:[~2018-08-23 21:30 UTC|newest]
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