[PATCH v5 11/11] PCI: endpoint: Add MSI set maximum restriction.

From: Gustavo Pimentel
Date: Wed Jun 20 2018 - 12:31:26 EST


Add pci_epc_set_msi() maximum 32 interrupts validation.

Signed-off-by: Gustavo Pimentel <gustavo.pimentel@xxxxxxxxxxxx>
---
Change v4->v5:
- New patch file.

drivers/pci/endpoint/pci-epc-core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/endpoint/pci-epc-core.c b/drivers/pci/endpoint/pci-epc-core.c
index c72e656..094dcc3 100644
--- a/drivers/pci/endpoint/pci-epc-core.c
+++ b/drivers/pci/endpoint/pci-epc-core.c
@@ -201,7 +201,8 @@ int pci_epc_set_msi(struct pci_epc *epc, u8 func_no, u8 interrupts)
u8 encode_int;
unsigned long flags;

- if (IS_ERR_OR_NULL(epc) || func_no >= epc->max_functions)
+ if (IS_ERR_OR_NULL(epc) || func_no >= epc->max_functions ||
+ interrupts > 32)
return -EINVAL;

if (!epc->ops->set_msi)
--
2.7.4