diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c
index cab879f..e249160 100644
--- a/drivers/gpu/drm/i915/intel_i2c.c
+++ b/drivers/gpu/drm/i915/intel_i2c.c
@@ -217,7 +217,7 @@
 		   (len << GMBUS_BYTE_COUNT_SHIFT) |
 		   (msg->addr << GMBUS_SLAVE_ADDR_SHIFT) |
 		   GMBUS_SLAVE_READ | GMBUS_SW_RDY);
-	do {
+	while (len) {
 		int ret;
 		u32 val, loop = 0;
 		u32 gmbus2;
@@ -235,7 +235,7 @@
 			*buf++ = val & 0xff;
 			val >>= 8;
 		} while (--len && ++loop < 4);
-	} while (len);
+	}
 
 	return 0;
 }