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authorJulien Brunel <brunel@diku.dk>2008-08-07 17:11:56 -0400
committerRoland Dreier <rolandd@cisco.com>2008-08-07 17:11:56 -0400
commitcd55ef5a10d1a2ea09853bc5fa40aadaf9f80614 (patch)
treef26e6f9ba06171a5c404ba5220cba60ad53e2a34 /Documentation/isdn
parent6e86841d05f371b5b9b86ce76c02aaee83352298 (diff)
IB/mad: Test ib_create_send_mad() return with IS_ERR(), not == NULL
In case of error, the function ib_create_send_mad() returns an ERR pointer, but never returns a NULL pointer. So testing the return value for error should be done with IS_ERR, not by comparing with NULL. A simplified version of the semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @correct_null_test@ expression x,E; statement S1, S2; @@ x = ib_create_send_mad(...) <... when != x = E if ( ( - x@p2 != NULL + ! IS_ERR ( x ) | - x@p2 == NULL + IS_ERR( x ) ) ) S1 else S2 ...> ? x = E; // </smpl> Signed-off-by: Julien Brunel <brunel@diku.dk> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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