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Date: Thu, 9 Dec 2010 21:55:41 -0600 From: Fernando Guzman Lugo <fernando.lugo@...com> To: <omar.ramirez@...com> Cc: <linux-kernel@...r.kernel.org>, <felipe.contreras@...il.com>, <nm@...com>, <ohad@...ery.com>, Fernando Guzman Lugo <fernando.lugo@...com> Subject: [PATCHv2 3/4] 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. Also add a check for __get_free_page allocation. Signed-off-by: Fernando Guzman Lugo <fernando.lugo@...com> --- drivers/staging/tidspbridge/core/ue_deh.c | 9 ++------- 1 files changed, 2 insertions(+), 7 deletions(-) diff --git a/drivers/staging/tidspbridge/core/ue_deh.c b/drivers/staging/tidspbridge/core/ue_deh.c index 0537edf..183900e 100644 --- a/drivers/staging/tidspbridge/core/ue_deh.c +++ b/drivers/staging/tidspbridge/core/ue_deh.c @@ -180,13 +180,8 @@ static void mmu_fault_print_stack(struct bridge_dev_context *dev_context) resources = dev_context->resources; dummy_va_addr = (void*)__get_free_page(GFP_ATOMIC); - /* - * 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. - */ - hw_mmu_twl_disable(resources->dw_dmmu_base); - hw_mmu_tlb_flush_all(resources->dw_dmmu_base); + if (!dummy_va_addr) + return; hw_mmu_tlb_add(resources->dw_dmmu_base, virt_to_phys(dummy_va_addr), fault_addr, -- 1.7.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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