drm/i915: Actually retry with bit-banging after GMBUS timeout

[deliverable/linux.git] / drivers / gpu / drm / i915 / intel_i2c.c

diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c
index 25254b5c1ac5c95173d0d5b4fa101f35a1131cb7..52fbe530fc9eac207093271a05d44dbf3515e11c 100644 (file)
--- a/drivers/gpu/drm/i915/intel_i2c.c
+++ b/drivers/gpu/drm/i915/intel_i2c.c
@@ -664,6 +664,12 @@ int intel_setup_gmbus(struct drm_device *dev)
 
                bus->adapter.algo = &gmbus_algorithm;
 
+               /*
+                * We wish to retry with bit banging
+                * after a timed out GMBUS attempt.
+                */
+               bus->adapter.retries = 1;
+
                /* By default use a conservative clock rate */
                bus->reg0 = pin | GMBUS_RATE_100KHZ;
 
@@ -683,7 +689,7 @@ int intel_setup_gmbus(struct drm_device *dev)
        return 0;
 
 err:
-       while (--pin) {
+       while (pin--) {
                if (!intel_gmbus_is_valid_pin(dev_priv, pin))
                        continue;