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PCI: endpoint: Allow only_64bit on BAR_RESERVED

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Remove the documentation that forbids setting only_64bit on a BAR of type
BAR_RESERVED.

When a reserved BAR is 64-bit by default, setting only_64bit is the most
accurate description. If we later add support to disable a reserved BAR
(e.g. disable_bar() for BARs that were never set via set_bar()), the
implementation will need to clear the adjacent BAR (upper 32 bits) as well;
having only_64bit set documents that requirement.

Signed-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://patch.msgid.link/20260312130229.2282001-14-cassel@kernel.org
This commit is contained in:
Manikanta Maddireddy 2026-03-12 14:02:30 +01:00 committed by Manivannan Sadhasivam
parent 0834d6f4ab
commit 27ce1d8ecb
1 changed files with 0 additions and 5 deletions
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5
include/linux/pci-epc.h
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@ -207,11 +207,6 @@ enum pci_epc_bar_type {
* @only_64bit: if true, an EPF driver is not allowed to choose if this BAR
* should be configured as 32-bit or 64-bit, the EPF driver must
* configure this BAR as 64-bit.
*
* only_64bit should not be set on a BAR of type BAR_RESERVED.
* (If BARx is a 64-bit BAR that an EPF driver is not allowed to
* touch, then both BARx and BARx+1 must be set to type
* BAR_RESERVED.)
*/
struct pci_epc_bar_desc {
enum pci_epc_bar_type type;