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| author | Ying Xue <ying.xue@windriver.com> | 2013-10-18 07:23:20 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-10-18 13:20:43 -0400 |
| commit | 636c0371a737c27510df867161fb8100c2f086bd (patch) | |
| tree | 8112f958eeab13d16c07212ddb8bf6e264d47777 /net/tipc | |
| parent | 679815834857d5305dae108a03addccf16d86868 (diff) | |
| download | linux-636c0371a737c27510df867161fb8100c2f086bd.tar.gz linux-636c0371a737c27510df867161fb8100c2f086bd.tar.bz2 linux-636c0371a737c27510df867161fb8100c2f086bd.zip | |
tipc: correct return value of link_cmd_set_value routine
link_cmd_set_value() takes commands for link, bearer and media related
configuration. Genereally the function returns 0 when a command is
recognized, and -EINVAL when it is not. However, in the switch for link
related commands it returns 0 even when the command is unrecognized. This
will sometimes make it look as if a failed configuration command has been
successful, but has otherwise no negative effects.
We remove this anomaly by returning -EINVAL even for link commands. We also
rework all three switches to make them conforming to common kernel coding
style.
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc')
| -rw-r--r-- | net/tipc/link.c | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/net/tipc/link.c b/net/tipc/link.c index be73a1fa7c65..223bbc87e451 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -2641,6 +2641,7 @@ static int link_cmd_set_value(const char *name, u32 new_value, u16 cmd) struct tipc_link *l_ptr; struct tipc_bearer *b_ptr; struct tipc_media *m_ptr; + int res = 0; l_ptr = link_find_link(name, &node); if (l_ptr) { @@ -2663,9 +2664,12 @@ static int link_cmd_set_value(const char *name, u32 new_value, u16 cmd) case TIPC_CMD_SET_LINK_WINDOW: tipc_link_set_queue_limits(l_ptr, new_value); break; + default: + res = -EINVAL; + break; } tipc_node_unlock(node); - return 0; + return res; } b_ptr = tipc_bearer_find(name); @@ -2673,15 +2677,18 @@ static int link_cmd_set_value(const char *name, u32 new_value, u16 cmd) switch (cmd) { case TIPC_CMD_SET_LINK_TOL: b_ptr->tolerance = new_value; - return 0; + break; case TIPC_CMD_SET_LINK_PRI: b_ptr->priority = new_value; - return 0; + break; case TIPC_CMD_SET_LINK_WINDOW: b_ptr->window = new_value; - return 0; + break; + default: + res = -EINVAL; + break; } - return -EINVAL; + return res; } m_ptr = tipc_media_find(name); @@ -2690,15 +2697,18 @@ static int link_cmd_set_value(const char *name, u32 new_value, u16 cmd) switch (cmd) { case TIPC_CMD_SET_LINK_TOL: m_ptr->tolerance = new_value; - return 0; + break; case TIPC_CMD_SET_LINK_PRI: m_ptr->priority = new_value; - return 0; + break; case TIPC_CMD_SET_LINK_WINDOW: m_ptr->window = new_value; - return 0; + break; + default: + res = -EINVAL; + break; } - return -EINVAL; + return res; } struct sk_buff *tipc_link_cmd_config(const void *req_tlv_area, int req_tlv_space, |