linux-kernel - [PATCH] staging: greybus: add logging statement when kfifo

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Date:   Wed, 10 Jul 2019 08:20:17 -0400
From:   Keyur Patel <iamkeyur96@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     iamkeyur96@...il.com, David Lin <dtwlin@...il.com>,
        Johan Hovold <johan@...nel.org>, Alex Elder <elder@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        greybus-dev@...ts.linaro.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] staging: greybus: add logging statement when kfifo_alloc fails

Added missing logging statement when kfifo_alloc fails, to improve
debugging.

Signed-off-by: Keyur Patel <iamkeyur96@...il.com>
---
 drivers/staging/greybus/uart.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/greybus/uart.c b/drivers/staging/greybus/uart.c
index b3bffe91ae99..86a395ae177d 100644
--- a/drivers/staging/greybus/uart.c
+++ b/drivers/staging/greybus/uart.c
@@ -856,8 +856,10 @@ static int gb_uart_probe(struct gbphy_device *gbphy_dev,
 
 	retval = kfifo_alloc(&gb_tty->write_fifo, GB_UART_WRITE_FIFO_SIZE,
 			     GFP_KERNEL);
-	if (retval)
+	if (retval) {
+		pr_err("kfifo_alloc failed\n");
 		goto exit_buf_free;
+	}
 
 	gb_tty->credits = GB_UART_FIRMWARE_CREDITS;
 	init_completion(&gb_tty->credits_complete);
-- 
2.22.0