IB/mlx4: fix improper return value

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If uhw->inlen is non-zero, the value of variable err is 0 if the copy
succeeds. Then, if kzalloc() or kmalloc() returns a NULL pointer, it
will return 0 to the callers. As a result, the callers cannot detect the
errors. This patch fixes the bug, assign "-ENOMEM" to err before the
NULL pointer checks, and remove the initialization of err at the
beginning.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=189031
Signed-off-by: Pan Bian <bianpan2016@163.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

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Pan Bian 2016-12-04 14:45:38 +08:00 • committed by Doug Ledford

parent 5b4c9cd7e4

commit 46d0703fac

1 changed files with 2 additions and 1 deletions

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drivers/infiniband/hw/mlx4/main.c

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