iPod Classic: modify USB storage read/write buffers size

The write buffer size is undefined to use the default 24Kb. size
defined (and recomended) in usb_storage.c, the read buffer size is
also decremented to 24 Kb. USB sequential read and write benchmarks
using diskdump are now 8-9% faster.

Change-Id: Ia7c9f77b57c8ca5b566b508efffbd713d1587acf

1 files changed, 2 insertions, 2 deletions

diff --git a/firmware/export/config/ipod6g.h b/firmware/export/config/ipod6g.h
index c8920c767c..cb8100bb55 100644
--- a/firmware/export/config/ipod6g.h
+++ b/firmware/export/config/ipod6g.h
@@ -246,6 +246,8 @@
 #define USB_NUM_ENDPOINTS 6
 #define USB_DEVBSS_ATTR __attribute__((aligned(32)))
 
+#define USB_READ_BUFFER_SIZE (1024*24)
+
 #define HAVE_SERIAL
 /* Disable iAP when LOGF_SERIAL is enabled to avoid conflicts */
 #ifndef LOGF_SERIAL
@@ -258,7 +260,5 @@
 /* Define this, if you can switch on/off the lineout */
 #define HAVE_LINEOUT_POWEROFF
 
-#define USB_WRITE_BUFFER_SIZE (1024*64)
-
 /* Define this if a programmable hotkey is mapped */
 #define HAVE_HOTKEY