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Commit 656563e3 authored by Jeff Garzik's avatar Jeff Garzik
Browse files

[libata] Print out SATA speed, if link is up 

Make the SATA phy probe messages a bit more informative.

Note this only applies to drivers that use __sata_phy_reset(),
which excludes some drivers.
parent 1b15688b

drivers/scsi/libata-core.c

+16 −4
Original line number Diff line number Diff line
@@ -1444,11 +1444,23 @@ void __sata_phy_reset(struct ata_port *ap) 
	} while (time_before(jiffies, timeout));



	/* TODO: phy layer with polling, timeouts, etc. */

	if (sata_dev_present(ap))

		ata_port_probe(ap);

	else {

	sstatus = scr_read(ap, SCR_STATUS);

		printk(KERN_INFO "ata%u: no device found (phy stat %08x)\n",

	if (sata_dev_present(ap)) {

		const char *speed;

		u32 tmp;



		tmp = (sstatus >> 4) & 0xf;

		if (tmp & (1 << 0))

			speed = "1.5";

		else if (tmp & (1 << 1))

			speed = "3.0";

		else

			speed = "<unknown>";

		printk(KERN_INFO "ata%u: SATA link up %s Gbps (SStatus %X)\n",

		       ap->id, speed, sstatus);

		ata_port_probe(ap);

	} else {

		printk(KERN_INFO "ata%u: SATA link down (SStatus %X)\n",

		       ap->id, sstatus);

		ata_port_disable(ap);

	}