PATCH: mvsas: increase port type detection delay to suit Seagate's 15k6 drive ST3450856SS 0003

[Reinhard Nissl <rnissl@gmx.de>]

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Hi Greg,

I hope you don't mind following your suggestion:

> Also, please cc: the stable developers if you want them to pay attention
> to messages like this.

-------- Original-Nachricht --------
Betreff: Re: PATCH: mvsas: increase port type detection delay to
suit Seagate's 15k6 drive ST3450856SS 0003
Datum: Fri, 12 Dec 2008 21:23:45 +0100
Von: Reinhard Nissl <rnissl@gmx.de>
An: linux-scsi@vger.kernel.org
CC: Ke Wei <kewei@marvell.com>, Jeff Garzik
<jgarzik@redhat.com>,	James Bottomley
<James.Bottomley@hansenpartnership.com>
Referenzen: <493BC76F.3060105@gmx.de> <49405137.9000902@gmx.de>

Hi,

I wonder why no one has dropped me a line so far. I hope you
don't mind CCing you directly. I found your email addresses on
mailing list entries regarding mvsas. I attach the little patch
again for ease of use.

Reinhard Nissl schrieb:

> I increased the delay step by step until loading of mvsas
> reliably detected the drive 200 times in sequence. A much better
> approach would be to monitor the hardware for some flag which
> indicates that port detection has finished, but I do not have any
> hardware documentation.
> 
> BTW: patch is against
> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-2.6.27.y.git
> 
> Signed-off-by: Reinhard Nissl <rnissl@gmx.de>

Bye.
-- 
Dipl.-Inform. (FH) Reinhard Nissl
mailto:rnissl@gmx.de

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diff --git a/drivers/scsi/mvsas.c b/drivers/scsi/mvsas.c
index 1dd70d7..23e5a87 100644
--- a/drivers/scsi/mvsas.c
+++ b/drivers/scsi/mvsas.c
@@ -2959,7 +2959,7 @@ static int __devinit mvs_hw_init(struct mvs_info *mvi)
 
 	/* enable auto port detection */
 	mw32(GBL_PORT_TYPE, MODE_AUTO_DET_EN);
-	msleep(100);
+	msleep(1100);
 	/* init and reset phys */
 	for (i = 0; i < mvi->chip->n_phy; i++) {
 		u32 lo = be32_to_cpu(*(u32 *)&mvi->sas_addr[4]);