a side effect in usb_enable() (writing back a "1" while reading a pulled-up input) masked a bug in power_init(), it would have turned off the disk with flash start. Became appearing while converting port access to and_b(), which touches only one byte.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4027 a1c6a512-1295-4272-9138-f99709370657

firmware/drivers/power.c

@@ -37,6 +37,7 @@ void power_init(void)
     charger_enable(false); /* Default to charger OFF */
 #endif
 #ifdef HAVE_ATA_POWER_OFF
+    or_b(0x20, &PADRL); /* leave the disk on */
     or_b(0x20, &PAIORL);
     PACR2 &= 0xFBFF;
 #endif