crypto: nitrox - fix unchecked variable in nitrox_register_interrupts

[ Upstream commit 57c126661f50b884d3812e7db6e00f2e778eccfb ]

Function nitrox_register_interrupts leaves variable 'nr_vecs' unchecked, which
would be use as kcalloc parameter later.

Fixes: 5155e118dda9 ("crypto: cavium/nitrox - use pci_alloc_irq_vectors() while enabling MSI-X.")
Signed-off-by: Tong Tiangen <tongtiangen@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/crypto/cavium/nitrox/nitrox_isr.c b/drivers/crypto/cavium/nitrox/nitrox_isr.c
index 99b053094f5aff2290e7b23d26c4ae309a03eec0..b16689b48f5a53056a951a5838525b25cc7d4cfd 100644 (file)
--- a/drivers/crypto/cavium/nitrox/nitrox_isr.c
+++ b/drivers/crypto/cavium/nitrox/nitrox_isr.c
@@ -307,6 +307,10 @@ int nitrox_register_interrupts(struct nitrox_device *ndev)
         * Entry 192: NPS_CORE_INT_ACTIVE
         */
        nr_vecs = pci_msix_vec_count(pdev);
+       if (nr_vecs < 0) {
+               dev_err(DEV(ndev), "Error in getting vec count %d\n", nr_vecs);
+               return nr_vecs;
+       }
 
        /* Enable MSI-X */
        ret = pci_alloc_irq_vectors(pdev, nr_vecs, nr_vecs, PCI_IRQ_MSIX);