linux-kernel - [PATCH] um: Fix return value in ubd

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Date: Wed,  6 Mar 2024 17:12:59 +0800
From: Duoming Zhou <duoming@....edu.cn>
To: linux-kernel@...r.kernel.org
Cc: linux-um@...ts.infradead.org,
	richard@....at,
	anton.ivanov@...bridgegreys.com,
	johannes@...solutions.net,
	axboe@...nel.dk,
	brauner@...nel.org,
	hare@...e.de,
	jinpu.wang@...os.com,
	Duoming Zhou <duoming@....edu.cn>
Subject: [PATCH] um: Fix return value in ubd_init()

When kmalloc_array() fails to allocate memory, the ubd_init()
should return -ENOMEM instead of -1. So, fix it.

Fixes: f88f0bdfc32f ("um: UBD Improvements")
Signed-off-by: Duoming Zhou <duoming@....edu.cn>
---
 arch/um/drivers/ubd_kern.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 92ee2697ff3..85e33caf62a 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -1098,7 +1098,7 @@ static int __init ubd_init(void)
 
 	if (irq_req_buffer == NULL) {
 		printk(KERN_ERR "Failed to initialize ubd buffering\n");
-		return -1;
+		return -ENOMEM;
 	}
 	io_req_buffer = kmalloc_array(UBD_REQ_BUFFER_SIZE,
 				      sizeof(struct io_thread_req *),
@@ -1109,7 +1109,7 @@ static int __init ubd_init(void)
 
 	if (io_req_buffer == NULL) {
 		printk(KERN_ERR "Failed to initialize ubd buffering\n");
-		return -1;
+		return -ENOMEM;
 	}
 	platform_driver_register(&ubd_driver);
 	mutex_lock(&ubd_lock);
-- 
2.17.1