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PCI: endpoint: Add MSI set maximum restriction

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Add pci_epc_set_msi() maximum 32 interrupts validation.

Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
This commit is contained in:
Gustavo Pimentel 2018-07-19 10:32:22 +02:00 committed by Lorenzo Pieralisi
parent 0653217c18
commit 15c972dfb3
1 changed files with 2 additions and 1 deletions
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3
drivers/pci/endpoint/pci-epc-core.c
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@ -201,7 +201,8 @@ int pci_epc_set_msi(struct pci_epc *epc, u8 func_no, u8 interrupts)
u8 encode_int; u8 encode_int;
unsigned long flags; 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; return -EINVAL;
if (!epc->ops->set_msi) if (!epc->ops->set_msi)