2022-11-29 02:20:46

by wangyufen

Subject: [PATCH v4 1/2] RDMA/hfi1: Fix error return code in parse_platform_config()

In the previous while loop, "ret" may be assigned zero, so the error
return code may be incorrectly set to 0 instead of -EINVAL.

Fixes: 97167e813415 ("staging/rdma/hfi1: Tune for unknown channel if configuration file is absent")
Signed-off-by: Wang Yufen <[email protected]>
---
drivers/infiniband/hw/hfi1/firmware.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/hfi1/firmware.c b/drivers/infiniband/hw/hfi1/firmware.c
index 1d77514..9a08c1a 100644
--- a/drivers/infiniband/hw/hfi1/firmware.c
+++ b/drivers/infiniband/hw/hfi1/firmware.c
@@ -1730,7 +1730,7 @@ int parse_platform_config(struct hfi1_devdata *dd)
u32 *ptr = NULL;
u32 header1 = 0, header2 = 0, magic_num = 0, crc = 0, file_length = 0;
u32 record_idx = 0, table_type = 0, table_length_dwords = 0;
- int ret = -EINVAL; /* assume failure */
+ int ret;

/*
* For integrated devices that did not fall back to the default file,
@@ -1743,6 +1743,7 @@ int parse_platform_config(struct hfi1_devdata *dd)

if (!dd->platform_config.data) {
dd_dev_err(dd, "%s: Missing config file\n", __func__);
+ ret = -EINVAL;
goto bail;
}
ptr = (u32 *)dd->platform_config.data;
@@ -1751,6 +1752,7 @@ int parse_platform_config(struct hfi1_devdata *dd)
ptr++;
if (magic_num != PLATFORM_CONFIG_MAGIC_NUM) {
dd_dev_err(dd, "%s: Bad config file\n", __func__);
+ ret = -EINVAL;
goto bail;
}

@@ -1774,6 +1776,7 @@ int parse_platform_config(struct hfi1_devdata *dd)
if (file_length > dd->platform_config.size) {
dd_dev_info(dd, "%s:File claims to be larger than read size\n",
__func__);
+ ret = -EINVAL;
goto bail;
} else if (file_length < dd->platform_config.size) {
dd_dev_info(dd,
@@ -1794,6 +1797,7 @@ int parse_platform_config(struct hfi1_devdata *dd)
dd_dev_err(dd, "%s: Failed validation at offset %ld\n",
__func__, (ptr - (u32 *)
dd->platform_config.data));
+ ret = -EINVAL;
goto bail;
}

@@ -1837,6 +1841,7 @@ int parse_platform_config(struct hfi1_devdata *dd)
__func__, table_type,
(ptr - (u32 *)
dd->platform_config.data));
+ ret = -EINVAL;
goto bail; /* We don't trust this file now */
}
pcfgcache->config_tables[table_type].table = ptr;
@@ -1856,6 +1861,7 @@ int parse_platform_config(struct hfi1_devdata *dd)
__func__, table_type,
(ptr -
(u32 *)dd->platform_config.data));
+ ret = -EINVAL;
goto bail; /* We don't trust this file now */
}
pcfgcache->config_tables[table_type].table_metadata =
--
1.8.3.1

2022-11-29 10:10:24

by Leon Romanovsky

Subject: Re: [PATCH v4 1/2] RDMA/hfi1: Fix error return code in parse_platform_config()

On Tue, Nov 29, 2022 at 10:04:18AM +0800, Wang Yufen wrote:
> In the previous while loop, "ret" may be assigned zero, so the error
> return code may be incorrectly set to 0 instead of -EINVAL.
>
> Fixes: 97167e813415 ("staging/rdma/hfi1: Tune for unknown channel if configuration file is absent")
> Signed-off-by: Wang Yufen <[email protected]>
> ---
> drivers/infiniband/hw/hfi1/firmware.c | 8 +++++++-
> 1 file changed, 7 insertions(+), 1 deletion(-)
>

Thanks, LGTM.

@Dennis?