diff options
| author | Don Zickus <dzickus@redhat.com> | 2015-05-13 13:22:21 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-05-24 13:28:56 -0700 |
| commit | d5531f3701d7e1b1bef5f8a567d4ed6175f78202 (patch) | |
| tree | 870d77be3c38e312833f8d9a961aa28e7f6bd491 | |
| parent | 4f6d8a97833f4640991f696d471486e5442eb0b2 (diff) | |
staging: unisys: Add checks for creation
There was a bunch of channel creation checks before the
visorchannel_create function was called, moving some of those
checks inside. This keeps the outside code cleaner and handles
the situation where a caller forgets to make these checks.
Signed-off-by: Don Zickus <dzickus@redhat.com>
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/unisys/visorbus/visorchannel.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/staging/unisys/visorbus/visorchannel.c b/drivers/staging/unisys/visorbus/visorchannel.c index 1789f9d89c0d..6e7675e27b21 100644 --- a/drivers/staging/unisys/visorbus/visorchannel.c +++ b/drivers/staging/unisys/visorbus/visorchannel.c @@ -62,6 +62,9 @@ visorchannel_create_guts(u64 physaddr, unsigned long channel_bytes, int err; size_t size = sizeof(struct channel_header); + if (physaddr == 0) + return NULL; + channel = kzalloc(sizeof(*channel), gfp); if (!channel) goto cleanup; |