[PATCH 5.4 159/348] crypto: nitrox - fix unchecked variable in nitrox_register_interrupts

[Greg Kroah-Hartman]

From: Tong Tiangen <tongtiangen@xxxxxxxxxx>

[ 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@xxxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/crypto/cavium/nitrox/nitrox_isr.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/crypto/cavium/nitrox/nitrox_isr.c b/drivers/crypto/cavium/nitrox/nitrox_isr.c
index 3dec570a190a..10e3408bf704 100644
--- a/drivers/crypto/cavium/nitrox/nitrox_isr.c
+++ b/drivers/crypto/cavium/nitrox/nitrox_isr.c
@@ -306,6 +306,10 @@ 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);
-- 
2.30.2