lkml.org 
[lkml]   [2018]   [Mar]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v5 04/12] PCI: endpoint: Setting 64-bit/prefetch bit is invalid when IO is set
Date
If flag PCI_BASE_ADDRESS_SPACE_IO is set, also having any
PCI_BASE_ADDRESS_MEM_* bit set is invalid.

This sanity check is done in pci_epc_set_bar(), so that we don't need
to do this sanity check in all epc->ops->set_bar() implementations.

Signed-off-by: Niklas Cassel <niklas.cassel@axis.com>
---
drivers/pci/endpoint/pci-epc-core.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/endpoint/pci-epc-core.c b/drivers/pci/endpoint/pci-epc-core.c
index 109d75f0b7d2..40eea20d21f9 100644
--- a/drivers/pci/endpoint/pci-epc-core.c
+++ b/drivers/pci/endpoint/pci-epc-core.c
@@ -309,10 +309,13 @@ int pci_epc_set_bar(struct pci_epc *epc, u8 func_no,
{
int ret;
unsigned long irq_flags;
+ int flags = epf_bar->flags;

if (IS_ERR_OR_NULL(epc) || func_no >= epc->max_functions ||
(epf_bar->barno == BAR_5 &&
- epf_bar->flags & PCI_BASE_ADDRESS_MEM_TYPE_64))
+ flags & PCI_BASE_ADDRESS_MEM_TYPE_64) ||
+ (flags & PCI_BASE_ADDRESS_SPACE_IO &&
+ flags & PCI_BASE_ADDRESS_IO_MASK))
return -EINVAL;

if (!epc->ops->set_bar)
--
2.14.2
\
 
 \ /
  Last update: 2018-03-28 13:51    [W:0.138 / U:0.700 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site