[PATCH next] ice: Fix signedness bug in ice_init_interrupt_scheme()
From: Dan Carpenter <hidden>
Date: 2025-02-12 15:27:14
Also in:
intel-wired-lan, kernel-janitors, lkml
Subsystem:
intel ethernet drivers, networking drivers, the rest · Maintainers:
Tony Nguyen, Przemek Kitszel, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
If pci_alloc_irq_vectors() can't allocate the minimum number of vectors
then it returns -ENOSPC so there is no need to check for that in the
caller. In fact, because pf->msix.min is an unsigned int, it means that
any negative error codes are type promoted to high positive values and
treated as success. So here the "return -ENOMEM;" is unreachable code.
Check for negatives instead.
Fixes: 79d97b8cf9a8 ("ice: remove splitting MSI-X between features")
Signed-off-by: Dan Carpenter <redacted>
---
drivers/net/ethernet/intel/ice/ice_irq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_irq.c b/drivers/net/ethernet/intel/ice/ice_irq.c
index cbae3d81f0f1..b1fdad154203 100644
--- a/drivers/net/ethernet/intel/ice/ice_irq.c
+++ b/drivers/net/ethernet/intel/ice/ice_irq.c@@ -149,7 +149,7 @@ int ice_init_interrupt_scheme(struct ice_pf *pf) vectors = pci_alloc_irq_vectors(pf->pdev, pf->msix.min, vectors, PCI_IRQ_MSIX); - if (vectors < pf->msix.min) + if (vectors < 0) return -ENOMEM; ice_init_irq_tracker(pf, pf->msix.max, vectors);
--
2.47.2