firewire: ohci: dump_stack() for PHY regs read/write failures

[karo-tx-linux.git] / drivers / firewire / ohci.c

diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index c64b4801adaa9236c5216ff402d6892cbe61b9f0..9e1db6490b9a3bb497b7911d94c42d9fc6190be7 100644 (file)
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -572,7 +572,8 @@ static int read_phy_reg(struct fw_ohci *ohci, int addr)
                if (i >= 3)
                        msleep(1);
        }
-       ohci_err(ohci, "failed to read phy reg\n");
+       ohci_err(ohci, "failed to read phy reg %d\n", addr);
+       dump_stack();
 
        return -EBUSY;
 }
@@ -594,7 +595,8 @@ static int write_phy_reg(const struct fw_ohci *ohci, int addr, u32 val)
                if (i >= 3)
                        msleep(1);
        }
-       ohci_err(ohci, "failed to write phy reg\n");
+       ohci_err(ohci, "failed to write phy reg %d, val %u\n", addr, val);
+       dump_stack();
 
        return -EBUSY;
 }