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

Sinan Kaya
2017-08-11T16:56:36Z

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 <okaya@codeaurora.org>
---
drivers/pci/probe.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)

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);
--
1.9.1