[PATCH v11 12/12] PCI: endpoint: Add MSI set maximum restriction

From: Gustavo Pimentel
Date: Mon Jul 16 2018 - 10:53:18 EST


Add pci_epc_set_msi() maximum 32 interrupts validation.

Signed-off-by: Gustavo Pimentel <gustavo.pimentel@xxxxxxxxxxxx>
Acked-by: Kishon Vijay Abraham I <kishon@xxxxxx>
---
Change v4->v5:
- New patch file.
Change v5->v6:
- Nothing changed, just to follow the patch set version.
Change v6->v7:
- Nothing changed, just to follow the patch set version.
Change v7->v8:
- Re-sending the patch series.
Change v8->v9:
- Nothing changed, just to follow the patch set version.
Change v9->v10:
- Nothing changed, just to follow the patch set version.
Change v10->v11:
- Nothing changed, just to follow the patch set version.

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