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Message-Id: <4AA0E85D02000078000136F9@vpn.id2.novell.com>
Date: Fri, 04 Sep 2009 09:13:49 +0100
From: "Jan Beulich" <JBeulich@...ell.com>
To: <mingo@...e.hu>, <tglx@...utronix.de>, <hpa@...or.com>
Cc: <yhlu.kernel@...il.com>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] x86: increase timeout for EHCI debug port reset
completion in early printk
On one of my systems, several thousand iterations are needed before
CMD_RESET can be observed clear after setting it. Using a much higher
value here obviously cannot hurt.
Signed-off-by: Jan Beulich <jbeulich@...ell.com>
Cc: Yinghai Lu <yhlu.kernel@...il.com>
---
arch/x86/kernel/early_printk.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- linux-2.6.31-rc8/arch/x86/kernel/early_printk.c 2009-06-10 05:05:27.000000000 +0200
+++ 2.6.31-rc8-x86-earlyprintk-dbgp-reset/arch/x86/kernel/early_printk.c 2009-09-02 12:13:01.000000000 +0200
@@ -624,7 +624,7 @@ try_next_port:
return -1;
}
- loop = 10;
+ loop = 100000;
/* Reset the EHCI controller */
cmd = readl(&ehci_regs->command);
cmd |= CMD_RESET;
--
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