From 61f216c7196e15e56d97c5a75af01e6684f17fa3 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 5 Feb 2007 23:21:19 +0900 Subject: [PATCH] libata: fix drive side 80c cable check, take 3 The 80c wire bit is bit 13, not 14. Bit 14 is always 1 if word93 is implemented. This increases the chance of incorrect wire detection especially because host side cable detection is often unreliable and we sometimes soley depend on drive side cable detection. Fix the test and add word93 validity check. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- include/linux/ata.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/ata.h b/include/linux/ata.h index 18e401ff7e..272736e379 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -352,7 +352,7 @@ static inline int ata_drive_40wire(const u16 *dev_id) { if (ata_id_major_version(dev_id) >= 5 && ata_id_is_sata(dev_id)) return 0; /* SATA */ - if (dev_id[93] & 0x4000) + if ((dev_id[93] & 0xE000) == 0x6000) return 0; /* 80 wire */ return 1; } -- 2.39.5