[V10,3/3] PCI: display not responding message while device is unreachable

Commit Message

Sinan Kaya Aug. 11, 2017, 4:56 p.m. UTC

Adding a print statement into pci_bus_wait_crs() so that user observes
the progress of device polling instead of silently waiting for timeout
to be reached.

Signed-off-by: Sinan Kaya <[e-mail]>
---
 drivers/pci/probe.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

Patch

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index b1cb7bd..2f4cf7d 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1839,11 +1839,17 @@  bool pci_bus_wait_crs(struct pci_bus *bus, int devfn, u32 *l, int crs_timeout)
 		delay *= 2;
 		if (pci_bus_read_config_dword(bus, devfn, PCI_VENDOR_ID, l))
 			return false;
+
+		if (delay >= 1000)
+			pr_info("pci %04x:%02x:%02x.%d: not responding since %dms still polling\n",
+				pci_domain_nr(bus), bus->number,
+				PCI_SLOT(devfn), PCI_FUNC(devfn), delay);
+
 		/* Card hasn't responded in 60 seconds?  Must be stuck. */
 		if (delay > crs_timeout) {
-			printk(KERN_WARNING "pci %04x:%02x:%02x.%d: not responding\n",
+			pr_warn("pci %04x:%02x:%02x.%d: not responding %dms timeout reached\n",
 			       pci_domain_nr(bus), bus->number, PCI_SLOT(devfn),
-			       PCI_FUNC(devfn));
+			       PCI_FUNC(devfn), crs_timeout);
 			return false;
 		}
 	} while ((*l & 0xffff) == 0x0001);