[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20231012230235.219861-1-limings@nvidia.com>
Date: Thu, 12 Oct 2023 19:02:35 -0400
From: Liming Sun <limings@...dia.com>
To: Vadim Pasternak <vadimp@...dia.com>,
David Thompson <davthompson@...dia.com>,
Hans de Goede <hdegoede@...hat.com>,
Mark Gross <markgross@...nel.org>,
Dan Carpenter <dan.carpenter@...aro.org>
CC: Liming Sun <limings@...dia.com>,
<platform-driver-x86@...r.kernel.org>,
<linux-kernel@...r.kernel.org>
Subject: [PATCH v2] platform/mellanox: mlxbf-tmfifo: Fix a warning message
This commit fixes the smatch static checker warning in function
mlxbf_tmfifo_rxtx_word() which complains data not initialized at
line 634 when IS_VRING_DROP() is TRUE.
Signed-off-by: Liming Sun <limings@...dia.com>
---
v1->v2: Logic adjustment for Hans's comment
- Adjust the logic to avoid confusion.
v1: Initial version.
---
drivers/platform/mellanox/mlxbf-tmfifo.c | 21 +++++++++++----------
1 file changed, 11 insertions(+), 10 deletions(-)
diff --git a/drivers/platform/mellanox/mlxbf-tmfifo.c b/drivers/platform/mellanox/mlxbf-tmfifo.c
index f3696a54a2bd..d9615ad60012 100644
--- a/drivers/platform/mellanox/mlxbf-tmfifo.c
+++ b/drivers/platform/mellanox/mlxbf-tmfifo.c
@@ -607,24 +607,25 @@ static void mlxbf_tmfifo_rxtx_word(struct mlxbf_tmfifo_vring *vring,
if (vring->cur_len + sizeof(u64) <= len) {
/* The whole word. */
- if (!IS_VRING_DROP(vring)) {
- if (is_rx)
+ if (is_rx) {
+ if (!IS_VRING_DROP(vring))
memcpy(addr + vring->cur_len, &data,
sizeof(u64));
- else
- memcpy(&data, addr + vring->cur_len,
- sizeof(u64));
+ } else {
+ memcpy(&data, addr + vring->cur_len,
+ sizeof(u64));
}
vring->cur_len += sizeof(u64);
} else {
/* Leftover bytes. */
- if (!IS_VRING_DROP(vring)) {
- if (is_rx)
+ if (is_rx) {
+ if (!IS_VRING_DROP(vring))
memcpy(addr + vring->cur_len, &data,
len - vring->cur_len);
- else
- memcpy(&data, addr + vring->cur_len,
- len - vring->cur_len);
+ } else {
+ data = 0;
+ memcpy(&data, addr + vring->cur_len,
+ len - vring->cur_len);
}
vring->cur_len = len;
}
--
2.30.1
Powered by blists - more mailing lists