linux-kernel - Re: [PATCH 1/2] USB: xhci: rename ambiguous named XHCI_NEC_HOST to XHCI_NEC_SHOW

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Date:	Thu, 30 May 2013 19:46:51 +0200
From:	Alexander Holler <holler@...oftware.de>
To:	Sarah Sharp <sarah.a.sharp@...ux.intel.com>
Cc:	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH 1/2] USB: xhci: rename ambiguous named XHCI_NEC_HOST to
 XHCI_NEC_SHOW_FW

On Thu, May 30, 2013 at 06:16:34AM +0200, Alexander Holler wrote:
> Am 30.05.2013 00:25, schrieb Sarah Sharp:
> > 
> > On Wed, May 29, 2013 at 11:14:32PM +0200, Alexander Holler wrote:
> >> Current Renesas Electronics XHCI hosts (which were formerly NEC)
> >> do support the same vendor command to show the firmware. Rename the
> >> ambigious named define XHCI_NEC_HOST to XHCI_NEC_SHOW_FW because it's
> >> only used to display the firmware version. Besides that, change the
> >> output "... NEC firmware version x.y" to "... firmware version x.y"
> >> to not confuse owners of Renesas USB hosts.
> >>
> >> (so only cosmetic, no functional changes)
> > 
> > I'm actually inclined to say you should just rip out the firmware
> > version code entirely.  I haven't needed to use it for years, and if
> > Renesas changed their vendor command set, I would rather not submit
> > random commands to the host.
> > 
> > So, can you redo this patch to just rip out XHCI_NEC_HOST and everything
> > that uses it?
> 
> Hmm, I find the firmware version rather informational and would even
> display it unconditionally (instead of with xhci_debug). It prevents the
> need to boot Windows to checkout if the latest version is installed,
> especially if someone is hunting a bug.

Below is the patch I'm using locally on top of the two previous patches.
Feel free to use/submit/merge it too.

Regards,

Alexander Holler


>From 9bf9e555600626b87371a8825c2557bdf5621e76 Mon Sep 17 00:00:00 2001
From: Alexander Holler <holler@...oftware.de>
Date: Thu, 30 May 2013 18:04:14 +0200
Subject: [PATCH] USB: xhci: always show the firmware version for NEC/Renesas
 hosts

Signed-off-by: Alexander Holler <holler@...oftware.de>
---
 drivers/usb/host/xhci-ring.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 761d566..8873b3e 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -1493,7 +1493,7 @@ bandwidth_change:
 			xhci->error_bitmask |= 1 << 6;
 			break;
 		}
-		xhci_dbg(xhci, "firmware version %2x.%02x\n",
+		dev_info(xhci_to_hcd(xhci)->self.controller, "firmware version %2x.%02x\n",
 			 NEC_FW_MAJOR(le32_to_cpu(event->status)),
 			 NEC_FW_MINOR(le32_to_cpu(event->status)));
 		break;
-- 
1.8.1.4

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