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staging/rdma/hfi1: Fix for module parameter hdrq_entsize when it's 0

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If driver is loaded with parameter hdrq_entsize=0, then
there's a NULL dereference when the driver gets unloaded.
This causes a kernel Oops and prevents the module  from
being unloaded. This patch fixes this issue by making sure
-EINVAL gets returned when hdrq_entsize=0.

Reviewed-by: Chegondi, Harish <harish.chegondi@intel.com>
Reviewed-by: Haralanov, Mitko <mitko.haralanov@intel.com>
Signed-off-by: Sebastian Sanchez <sebastian.sanchez@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sebastian Sanchez 2015-12-10 16:02:49 -05:00 committed by Greg Kroah-Hartman
parent 859bcad9c2
commit 07859def5d
1 changed files with 1 additions and 0 deletions
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drivers/staging/rdma/hfi1/init.c
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@ -1351,6 +1351,7 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
if (!encode_rcv_header_entry_size(hfi1_hdrq_entsize)) {
hfi1_early_err(&pdev->dev, "Invalid HdrQ Entry size %u\n",
hfi1_hdrq_entsize);
ret = -EINVAL;
goto bail;
}