pass unsgined long to udelay in e1000

I get these warnings on ppc32 due to the check in udelay() macro. Is it safe to move the struct member?

CC [M] drivers/net/e1000/e1000_hw.o
drivers/net/e1000/e1000_hw.c: In function `e1000_raise_ee_clk':
drivers/net/e1000/e1000_hw.c:3122: warning: comparison is always false due to limited range of data type drivers/net/e1000/e1000_hw.c: In function `e1000_lower_ee_clk':
drivers/net/e1000/e1000_hw.c:3141: warning: comparison is always false due to limited range of data type drivers/net/e1000/e1000_hw.c: In function `e1000_shift_out_ee_bits':
drivers/net/e1000/e1000_hw.c:3185: warning: comparison is always false due to limited range of data type drivers/net/e1000/e1000_hw.c: In function `e1000_standby_eeprom':
drivers/net/e1000/e1000_hw.c:3314: warning: comparison is always false due to limited range of data type drivers/net/e1000/e1000_hw.c:3320: warning: comparison is always false due to limited range of data type drivers/net/e1000/e1000_hw.c:3326: warning: comparison is always false due to limited range of data type drivers/net/e1000/e1000_hw.c:3332: warning: comparison is always false due to limited range of data type drivers/net/e1000/e1000_hw.c:3338: warning: comparison is always false due to limited range of data type drivers/net/e1000/e1000_hw.c:3342: warning: comparison is always false due to limited range of data type drivers/net/e1000/e1000_hw.c: In function `e1000_release_eeprom':
drivers/net/e1000/e1000_hw.c:3366: warning: comparison is always false due to limited range of data type drivers/net/e1000/e1000_hw.c:3379: warning: comparison is always false due to limited range of data type drivers/net/e1000/e1000_hw.c:3385: warning: comparison is always false due to limited range of data type

patch is against 2.6.7-bk15

@@ -234,8 +234,8 @@ struct e1000_eeprom_info {
     uint16_t word_size;
     uint16_t opcode_bits;
     uint16_t address_bits;
-    uint16_t delay_usec;
     uint16_t page_size;
+    unsigned long delay_usec;
 };
 
 

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