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staging: dgap: fix possible NULL dereference

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The return pointer from dgap_getword() is used in strcmp() where it is
dereferenced. But dgap_getword() can return NULL.
Lets put a check there and return 0 as error.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sudip Mukherjee 2015-09-10 17:24:58 +05:30 committed by Greg Kroah-Hartman
parent 60aff4ffba
commit 39be6b8b0c
1 changed files with 2 additions and 0 deletions
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2
drivers/staging/dgap/dgap.c
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@ -349,6 +349,8 @@ static int dgap_gettok(char **in)
if (strstr(dgap_cword, "board")) {
w = dgap_getword(in);
if (!w)
return 0;
snprintf(dgap_cword, MAXCWORD, "%s", w);
for (t = dgap_brdtype; t->token != 0; t++) {
if (!strcmp(w, t->string))