From 5b24605ebaddf0b275d22076a367d24eb3fb5094 Mon Sep 17 00:00:00 2001
From: Charles Haley <>
Date: Tue, 14 Aug 2012 09:13:25 +0200
Subject: [PATCH] Prevent the smartdevice driver from hammering on MacOS when
 sending files.

---
 src/calibre/devices/smart_device_app/driver.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/calibre/devices/smart_device_app/driver.py b/src/calibre/devices/smart_device_app/driver.py
index 6f78582b15..ba6a959c0e 100644
--- a/src/calibre/devices/smart_device_app/driver.py
+++ b/src/calibre/devices/smart_device_app/driver.py
@@ -380,6 +380,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin):
                 self._debug('socket error', e, e.errno)
                 if e.args[0] != EAGAIN and e.args[0] != EINTR:
                     raise
+                time.sleep(0.1) # lets not hammer the OS too hard
 
     def _call_client(self, op, arg, print_debug_info=True):
         if op != 'NOOP':