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authorTilman Schmidt <tilman@imap.cc>2014-10-11 13:46:30 +0200
committerDavid S. Miller <davem@davemloft.net>2014-10-14 15:05:35 -0400
commit340184b35ac8786bdb574d2c8ce8e4f1269ec4da (patch)
tree476198dccf63ead3c26d49ce496c429e24d4a0bf /drivers/isdn
parent2bf3a09ea51f807d78d48d0ebc591b9e1502a743 (diff)
downloadlinux-340184b35ac8786bdb574d2c8ce8e4f1269ec4da.tar.bz2
isdn/capi: don't return NULL from capi_cmd2str()
capi_cmd2str() is used in many places to build log messages. None of them is prepared to handle NULL as a result. Change the function to return printable string "INVALID_COMMAND" instead. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/isdn')
-rw-r--r--drivers/isdn/capi/capiutil.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/isdn/capi/capiutil.c b/drivers/isdn/capi/capiutil.c
index 36835ef3f340..36c1b37cea0a 100644
--- a/drivers/isdn/capi/capiutil.c
+++ b/drivers/isdn/capi/capiutil.c
@@ -489,12 +489,17 @@ static char *mnames[] =
* @cmd: command number
* @subcmd: subcommand number
*
- * Return value: static string, NULL if command/subcommand unknown
+ * Return value: static string
*/
char *capi_cmd2str(u8 cmd, u8 subcmd)
{
- return mnames[command_2_index(cmd, subcmd)];
+ char *result;
+
+ result = mnames[command_2_index(cmd, subcmd)];
+ if (result == NULL)
+ result = "INVALID_COMMAND";
+ return result;
}