Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.6 012/203] IB/rdmavt: Correct qp_priv_alloc() return value test | Date | Mon, 25 Jul 2016 13:53:47 -0700 |
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4.6-stable review patch. If anyone has any objections, please let me know.
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From: Mike Marciniszyn <mike.marciniszyn@intel.com>
commit c755f4afa66ad3ed98870bd3254f37c47fb2c800 upstream.
The current drivers return errors from this calldown wrapped in an ERR_PTR().
The rdmavt code incorrectly tests for NULL.
The code is fixed to use IS_ERR() and change ret according to the driver return value.
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/infiniband/sw/rdmavt/qp.c | 4 +++- include/rdma/rdma_vt.h | 4 +++- 2 files changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/infiniband/sw/rdmavt/qp.c +++ b/drivers/infiniband/sw/rdmavt/qp.c @@ -683,8 +683,10 @@ struct ib_qp *rvt_create_qp(struct ib_pd * initialization that is needed. */ priv = rdi->driver_f.qp_priv_alloc(rdi, qp, gfp); - if (!priv) + if (IS_ERR(priv)) { + ret = priv; goto bail_qp; + } qp->priv = priv; qp->timeout_jiffies = usecs_to_jiffies((4096UL * (1UL << qp->timeout)) / --- a/include/rdma/rdma_vt.h +++ b/include/rdma/rdma_vt.h @@ -203,7 +203,9 @@ struct rvt_driver_provided { /* * Allocate a private queue pair data structure for driver specific - * information which is opaque to rdmavt. + * information which is opaque to rdmavt. Errors are returned via + * ERR_PTR(err). The driver is free to return NULL or a valid + * pointer. */ void * (*qp_priv_alloc)(struct rvt_dev_info *rdi, struct rvt_qp *qp, gfp_t gfp);
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