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Re: drivers/net/wireless/realtek/rtl818x/rtl8180/rtl8225se.c: Odd array size

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On 11/28/2017 10:49 AM, Joe Perches wrote:
61 entries in this table:

static const u8 OFDM_CONFIG[] = {
	0x10, 0x0F, 0x0A, 0x0C, 0x14, 0xFA, 0xFF, 0x50,
	0x00, 0x50, 0x00, 0x00, 0x00, 0x5C, 0x00, 0x00,
	0x40, 0x00, 0x40, 0x00, 0x00, 0x00, 0xA8, 0x26,
	0x32, 0x33, 0x06, 0xA5, 0x6F, 0x55, 0xC8, 0xBB,
	0x0A, 0xE1, 0x2C, 0x4A, 0x86, 0x83, 0x34, 0x00,
	0x4F, 0x24, 0x6F, 0xC2, 0x03, 0x40, 0x80, 0x00,
	0xC0, 0xC1, 0x58, 0xF1, 0x00, 0xC4, 0x90, 0x3e,
	0xD8, 0x3C, 0x7B, 0x10, 0x10
};

but only 60 written?

static void rtl8187se_write_ofdm_config(struct ieee80211_hw *dev)
{
	/* write OFDM_CONFIG table */
	int i;

	for (i = 0; i < 60; i++)
		rtl8225se_write_phy_ofdm(dev, i, OFDM_CONFIG[i]);

}

This is the only use of OFDM_CONFIG.

What is the defect here?

Should 60 be ARRAY_SIZE(OFDM_CONFIG) or should the array be shortened?

One too many entries or one too few a write?
My guess would be one too few a write.

Joe,

You are probably right; however, as I do not have this device and cannot test, the safer thing would be to crop the array back to 60 entries. That way the driver's behavior does not change.

I looked to see if rtl8187 had a similar construct, but it does not.

Larry





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