Commit efb9e0f4 authored Jan 30, 2014 by Denis V. Lunev Committed by Tejun Heo Jan 31, 2014

ata: enable quirk from jmicron JMB350 for JMB394



Without the patch the kernel generates the following error.

 ata11.15: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
 ata11.15: Port Multiplier vendor mismatch '0x197b' != '0x123'
 ata11.15: PMP revalidation failed (errno=-19)
 ata11.15: failed to recover PMP after 5 tries, giving up

This patch helps to bypass this error and the device becomes
functional.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: <linux-ide@vger.kernel.org>
Cc: stable@vger.kernel.org

parent 49c8f1ff

drivers/ata/libata-pmp.c

+5 −2

Original line number	Diff line number	Diff line
		@@ -447,8 +447,11 @@ static void sata_pmp_quirks(struct ata_port *ap)
		* otherwise. Don't try hard to recover it.
		*/
		ap->pmp_link[ap->nr_pmp_links - 1].flags \|= ATA_LFLAG_NO_RETRY;
		} else if (vendor == 0x197b && devid == 0x2352) {
		/* chip found in Thermaltake BlackX Duet, jmicron JMB350? */
		} else if (vendor == 0x197b && (devid == 0x2352 \|\| devid == 0x0325)) {
		/*
		* 0x2352: found in Thermaltake BlackX Duet, jmicron JMB350?
		* 0x0325: jmicron JMB394.
		*/
		ata_for_each_link(link, ap, EDGE) {
		/* SRST breaks detection and disks get misclassified
		* LPM disabled to avoid potential problems

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