From afe3cc51ba4be6b25b721c40f178ea4157751161 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 6 Jun 2007 16:35:55 +0900 Subject: [PATCH] libata: fix hw_sata_spd_limit initialization hw_sata_spd_limit used to be incorrectly initialized to zero instead of UINT_MAX if SPD is zero in SControl register. This breaks PHY speed down. Fix it. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index e7937166a8ba..bf8d3b8c171d 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -6317,7 +6317,8 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht) /* init sata_spd_limit to the current value */ if (sata_scr_read(ap, SCR_CONTROL, &scontrol) == 0) { int spd = (scontrol >> 4) & 0xf; - ap->hw_sata_spd_limit &= (1 << spd) - 1; + if (spd) + ap->hw_sata_spd_limit &= (1 << spd) - 1; } ap->sata_spd_limit = ap->hw_sata_spd_limit; -- 2.34.1