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ipmi: Fix return value when a message is truncated 

The user can ask the message to be returned even if it didn't supply
enough memory for the data, and it will return an error but still
fills in as much data as possible.   However, the return value
wasn't being set to an error, it was being overwritten.  Create a
second return value for that case.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
This commit is contained in:
Corey Minyard 2018-11-16 09:55:47 -06:00
parent d5a2197be1
commit 95ac0daa0c
1 changed files with 3 additions and 3 deletions
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6
drivers/char/ipmi/ipmi_devintf.c
View File

@ -207,7 +207,7 @@ static int handle_recv(struct ipmi_file_private *priv,
struct list_head *entry;
struct ipmi_recv_msg *msg;
unsigned long flags;
int rv = 0;
int rv = 0, rv2 = 0;
/* We claim a mutex because we don't want two
users getting something from the queue at a time.
@ -250,7 +250,7 @@ static int handle_recv(struct ipmi_file_private *priv,
if (msg->msg.data_len > 0) {
if (rsp->msg.data_len < msg->msg.data_len) {
rv = -EMSGSIZE;
rv2 = -EMSGSIZE;
if (trunc)
msg->msg.data_len = rsp->msg.data_len;
else
@ -274,7 +274,7 @@ static int handle_recv(struct ipmi_file_private *priv,
mutex_unlock(&priv->recv_mutex);
ipmi_free_recv_msg(msg);
return 0;
return rv2;
recv_putback_on_err:
/* If we got an error, put the message back onto