linux-kernel - [PATCH] drm/udl: Return correct error code on kmalloc failure

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Message-Id: <20220115164525.50258-1-harshit.m.mogalapalli@oracle.com>
Date:   Sat, 15 Jan 2022 08:45:25 -0800
From:   Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     harshit.m.mogalapalli@...cle.com, dan.carpenter@...cle.com,
        kernel-janitors@...r.kernel.org, Dave Airlie <airlied@...hat.com>,
        Sean Paul <sean@...rly.run>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Jani Nikula <jani.nikula@...el.com>,
        Robert Tarasov <tutankhamen@...omium.org>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH] drm/udl: Return correct error code on kmalloc failure

-ENOMEM is correct error code to return on a memory allocation failure
instead of -1.

Smatch Warning:
drivers/gpu/drm/udl/udl_connector.c:27 udl_get_edid_block() warn:
returning -1 instead of -ENOMEM is sloppy

Fixes: a51143001d9e ("drm/udl: Refactor edid retrieving in UDL driver (v2)")
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>
---
 drivers/gpu/drm/udl/udl_connector.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/udl/udl_connector.c b/drivers/gpu/drm/udl/udl_connector.c
index 930574ad2bca..b7a9c6d103ba 100644
--- a/drivers/gpu/drm/udl/udl_connector.c
+++ b/drivers/gpu/drm/udl/udl_connector.c
@@ -24,7 +24,7 @@ static int udl_get_edid_block(void *data, u8 *buf, unsigned int block,
 
 	read_buff = kmalloc(2, GFP_KERNEL);
 	if (!read_buff)
-		return -1;
+		return -ENOMEM;
 
 	for (i = 0; i < len; i++) {
 		int bval = (i + block * EDID_LENGTH) << 8;
-- 
2.27.0