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From: Tony Lindgren <tony@atomide.com>
To: Felipe Balbi <balbi@ti.com>
Cc: Sekhar Nori <nsekhar@ti.com>,
	Russell King <rmk+kernel@arm.linux.org.uk>,
	Linux OMAP Mailing List <linux-omap@vger.kernel.org>,
	Linux ARM Mailing List <linux-arm-kernel@lists.infradead.org>,
	Nishanth Menon <nm@ti.com>
Subject: Re: [PATCH] ARM: OMAP2+: l2c: squelch warning dump on power control setting
Date: Wed, 2 Jul 2014 01:11:43 -0700	[thread overview]
Message-ID: <20140702081142.GU28884@atomide.com> (raw)
In-Reply-To: <20140701194704.GG13396@saruman.home>

* Felipe Balbi <balbi@ti.com> [140701 12:49]:
> On Tue, Jun 17, 2014 at 08:19:35AM -0500, Felipe Balbi wrote:
> > On Tue, Jun 17, 2014 at 04:04:51PM +0530, Sekhar Nori wrote:
> > > ROM code on AM437x does not support writing to L2C-310 power control
> > > register. The L2C driver, however, tries writing to this register for
> > > all revisions >= r3p0.
> > > 
> > > This leads to a warning dump on boot which leads most users to believe
> > > that L2 cache is non-functional.
> > > 
> > > Since the problem is understood, and cannot be addressed through software,
> > > replace the warning with a pr_info() while maintaining the WARN_ON() for
> > > other truly unexpected scenarios.
> > > 
> > > Reported-by: Nishanth Menon <nm@ti.com>
> > > Signed-off-by: Sekhar Nori <nsekhar@ti.com>
> > 
> > Tested with today's linux-next
> > (5f295cdf5c5dbbb0c40f10f2ddae02ff46bbf773) with am437x-sk, I can see
> > that the WARNING goes away.
> > 
> > Tested-by: Felipe Balbi <balbi@ti.com>
> 
> ping here, I can't see this patch onl linus/master or next/master yet.

Sorry I've been waiting for my pull request against -rc1 to get
merged first, no idea why that is still pending.

Regards,

Tony

WARNING: multiple messages have this Message-ID (diff)
From: tony@atomide.com (Tony Lindgren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: OMAP2+: l2c: squelch warning dump on power control setting
Date: Wed, 2 Jul 2014 01:11:43 -0700	[thread overview]
Message-ID: <20140702081142.GU28884@atomide.com> (raw)
In-Reply-To: <20140701194704.GG13396@saruman.home>

* Felipe Balbi <balbi@ti.com> [140701 12:49]:
> On Tue, Jun 17, 2014 at 08:19:35AM -0500, Felipe Balbi wrote:
> > On Tue, Jun 17, 2014 at 04:04:51PM +0530, Sekhar Nori wrote:
> > > ROM code on AM437x does not support writing to L2C-310 power control
> > > register. The L2C driver, however, tries writing to this register for
> > > all revisions >= r3p0.
> > > 
> > > This leads to a warning dump on boot which leads most users to believe
> > > that L2 cache is non-functional.
> > > 
> > > Since the problem is understood, and cannot be addressed through software,
> > > replace the warning with a pr_info() while maintaining the WARN_ON() for
> > > other truly unexpected scenarios.
> > > 
> > > Reported-by: Nishanth Menon <nm@ti.com>
> > > Signed-off-by: Sekhar Nori <nsekhar@ti.com>
> > 
> > Tested with today's linux-next
> > (5f295cdf5c5dbbb0c40f10f2ddae02ff46bbf773) with am437x-sk, I can see
> > that the WARNING goes away.
> > 
> > Tested-by: Felipe Balbi <balbi@ti.com>
> 
> ping here, I can't see this patch onl linus/master or next/master yet.

Sorry I've been waiting for my pull request against -rc1 to get
merged first, no idea why that is still pending.

Regards,

Tony

  reply	other threads:[~2014-07-02  8:11 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-17 10:34 [PATCH] ARM: OMAP2+: l2c: squelch warning dump on power control setting Sekhar Nori
2014-06-17 10:34 ` Sekhar Nori
2014-06-17 13:19 ` Felipe Balbi
2014-06-17 13:19   ` Felipe Balbi
2014-07-01 19:47   ` Felipe Balbi
2014-07-01 19:47     ` Felipe Balbi
2014-07-02  8:11     ` Tony Lindgren [this message]
2014-07-02  8:11       ` Tony Lindgren
2014-07-07 10:47       ` Tony Lindgren
2014-07-07 10:47         ` Tony Lindgren
2014-07-07 10:49         ` Russell King - ARM Linux
2014-07-07 10:49           ` Russell King - ARM Linux
2014-07-07 11:02           ` Tony Lindgren
2014-07-07 11:02             ` Tony Lindgren
2014-07-07 11:50             ` Sekhar Nori
2014-07-07 11:50               ` Sekhar Nori
2014-07-07 12:15               ` Russell King - ARM Linux
2014-07-07 12:15                 ` Russell King - ARM Linux
2014-07-07 12:39                 ` Tony Lindgren
2014-07-07 12:39                   ` Tony Lindgren
2014-07-07 13:40                   ` Russell King - ARM Linux
2014-07-07 13:40                     ` Russell King - ARM Linux
2014-07-07 15:10                     ` Felipe Balbi
2014-07-07 15:10                       ` Felipe Balbi
2014-07-08  4:54                       ` Sekhar Nori
2014-07-08  4:54                         ` Sekhar Nori
2014-07-08  8:29                         ` Tony Lindgren
2014-07-08  8:29                           ` Tony Lindgren
2014-07-09  9:25                           ` Tony Lindgren
2014-07-09  9:25                             ` Tony Lindgren
2014-07-09 12:26                             ` Sekhar Nori
2014-07-09 12:26                               ` Sekhar Nori
2014-07-09 12:31                               ` Tony Lindgren
2014-07-09 12:31                                 ` Tony Lindgren
2014-07-09 12:39                               ` Russell King - ARM Linux
2014-07-09 12:39                                 ` Russell King - ARM Linux
2014-07-09 14:15                                 ` Santosh Shilimkar
2014-07-09 14:15                                   ` Santosh Shilimkar
2014-07-14 10:46                                   ` Sekhar Nori
2014-07-14 10:46                                     ` Sekhar Nori
2014-07-09 13:55                               ` Felipe Balbi
2014-07-09 13:55                                 ` Felipe Balbi
2014-07-14 10:41                                 ` Sekhar Nori
2014-07-14 10:41                                   ` Sekhar Nori
2014-07-09 13:51                             ` Felipe Balbi
2014-07-09 13:51                               ` Felipe Balbi
2014-07-09 14:06                     ` Santosh Shilimkar
2014-07-09 14:06                       ` Santosh Shilimkar

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