From: Adam Borowski Date: Fri, 8 Sep 2017 10:30:00 +0000 (+0200) Subject: rtl8xxxu: Don't printk raw binary if serial number is not burned in. X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e0a576d7478230aaf51c479db57a2c5ce68e2575;p=linux.git rtl8xxxu: Don't printk raw binary if serial number is not burned in. I assume that a blank efuse comes with all ones, thus I did not bother recognizing other possible junk values. This matches 100% of dongles I've seen (a single Gembird 8192eu). Signed-off-by: Adam Borowski Signed-off-by: Kalle Valo --- diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c index 80fee699f58a0..38b2ba1ac6f8c 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c @@ -614,7 +614,10 @@ static int rtl8192eu_parse_efuse(struct rtl8xxxu_priv *priv) dev_info(&priv->udev->dev, "Vendor: %.7s\n", efuse->vendor_name); dev_info(&priv->udev->dev, "Product: %.11s\n", efuse->device_name); - dev_info(&priv->udev->dev, "Serial: %.11s\n", efuse->serial); + if (memchr_inv(efuse->serial, 0xff, 11)) + dev_info(&priv->udev->dev, "Serial: %.11s\n", efuse->serial); + else + dev_info(&priv->udev->dev, "Serial not available.\n"); if (rtl8xxxu_debug & RTL8XXXU_DEBUG_EFUSE) { unsigned char *raw = priv->efuse_wifi.raw;