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[efi] Extend efi_locate_device() to allow searching up the device path

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Extend the functionality of efi_locate_device() to allow callers to
find instances of the protocol that may exist further up the device
path.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2023-01-23 19:15:45 +00:00
parent 1cd0a248cc
commit 2fef0c541e
4 changed files with 45 additions and 17 deletions
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2
src/drivers/net/efi/nii.c
View File

@@ -222,7 +222,7 @@ static int nii_pci_open ( struct nii_nic *nii ) {
/* Locate PCI I/O protocol */
if ( ( rc = efi_locate_device ( device, &efi_pci_io_protocol_guid,
&pci_device ) ) != 0 ) {
&pci_device, 0 ) ) != 0 ) {
DBGC ( nii, "NII %s could not locate PCI I/O protocol: %s\n",
nii->dev.name, strerror ( rc ) );
goto err_locate;

2
src/drivers/net/efi/snponly.c
View File

@@ -80,7 +80,7 @@ static int chained_locate ( struct chained_protocol *chained ) {
/* Locate handle supporting this protocol */
if ( ( rc = efi_locate_device ( device, chained->protocol,
&parent ) ) != 0 ) {
&parent, 0 ) ) != 0 ) {
DBGC ( device, "CHAINED %s does not support %s: %s\n",
efi_handle_name ( device ),
efi_guid_ntoa ( chained->protocol ), strerror ( rc ) );