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authorMatthew Rosato <mjrosato@linux.ibm.com>2020-10-07 14:56:21 -0400
committerAlex Williamson <alex.williamson@redhat.com>2020-10-07 14:23:43 -0600
commit517fe298245c4c2c3d1f9b8f140e40c7f9d7518d (patch)
treeb6bb22299c316a600c0371d758ef35fda7b6f2ed /arch/s390
parentdc8c638d9e140e0a2a04ab7e3f3fde3bbad1dacf (diff)
s390/pci: track whether util_str is valid in the zpci_dev
We'll need to keep track of whether or not the byte string in util_str is valid and thus needs to be passed to a vfio-pci passthrough device. Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com> Acked-by: Niklas Schnelle <schnelle@linux.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/include/asm/pci.h3
-rw-r--r--arch/s390/pci/pci_clp.c1
2 files changed, 3 insertions, 1 deletions
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
index 882e233bc6ea..fa1fed450f74 100644
--- a/arch/s390/include/asm/pci.h
+++ b/arch/s390/include/asm/pci.h
@@ -132,7 +132,8 @@ struct zpci_dev {
u8 rid_available : 1;
u8 has_hp_slot : 1;
u8 is_physfn : 1;
- u8 reserved : 5;
+ u8 util_str_avail : 1;
+ u8 reserved : 4;
unsigned int devfn; /* DEVFN part of the RID*/
struct mutex lock;
diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c
index 48bf3160e856..322689bec217 100644
--- a/arch/s390/pci/pci_clp.c
+++ b/arch/s390/pci/pci_clp.c
@@ -168,6 +168,7 @@ static int clp_store_query_pci_fn(struct zpci_dev *zdev,
if (response->util_str_avail) {
memcpy(zdev->util_str, response->util_str,
sizeof(zdev->util_str));
+ zdev->util_str_avail = 1;
}
zdev->mio_capable = response->mio_addr_avail;
for (i = 0; i < PCI_STD_NUM_BARS; i++) {