linux-kernel - [PATCH 6/8] staging: tidspbridge - remove disabling twl when printing DSP stack

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Message-Id: <1288054306-4361-7-git-send-email-x0095840@ti.com>
Date:	Mon, 25 Oct 2010 19:51:44 -0500
From:	Fernando Guzman Lugo <x0095840@...com>
To:	<gregkh@...e.de>
Cc:	<felipe.contreras@...ia.com>, <Hiroshi.DOYU@...ia.com>,
	<linux-kernel@...r.kernel.org>, <andy.shevchenko@...il.com>,
	<linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Fernando Guzman Lugo <x0095840@...com>
Subject: [PATCH 6/8] staging: tidspbridge - remove disabling twl when printing DSP stack

Now the SHM segments are not in lock tlbs, instead
they are in translation tables. So we cannot disable
twl in order to get the DSP stack dump.

Signed-off-by: Fernando Guzman Lugo <x0095840@...com>
---
 drivers/staging/tidspbridge/core/dsp-mmu.c |    8 --------
 1 files changed, 0 insertions(+), 8 deletions(-)

diff --git a/drivers/staging/tidspbridge/core/dsp-mmu.c b/drivers/staging/tidspbridge/core/dsp-mmu.c
index 157b743..3a00087 100644
--- a/drivers/staging/tidspbridge/core/dsp-mmu.c
+++ b/drivers/staging/tidspbridge/core/dsp-mmu.c
@@ -43,14 +43,6 @@ static void mmu_fault_print_stack(struct bridge_dev_context *dev_context)
 	if (!dummy_addr)
 		return;
 
-	/*
-	 * Before acking the MMU fault, let's make sure MMU can only
-	 * access entry #0. Then add a new entry so that the DSP OS
-	 * can continue in order to dump the stack.
-	 */
-	tmp = iommu_read_reg(mmu, MMU_CNTL);
-	tmp &= ~MMU_CNTL_TWL_EN;
-	iommu_write_reg(mmu, tmp, MMU_CNTL);
 	fa = iommu_read_reg(mmu, MMU_FAULT_AD);
 	e.da = fa & PAGE_MASK;
 	e.pa = virt_to_phys(dummy_addr);
-- 
1.6.3.3

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