From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e23smtp03.au.ibm.com (e23smtp03.au.ibm.com [202.81.31.145]) (using TLSv1.2 with cipher CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3qzVTM6pKZzDqB2 for ; Tue, 3 May 2016 15:43:35 +1000 (AEST) Received: from localhost by e23smtp03.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 3 May 2016 15:43:35 +1000 Received: from d23relay10.au.ibm.com (d23relay10.au.ibm.com [9.190.26.77]) by d23dlp01.au.ibm.com (Postfix) with ESMTP id 69AA62CE8056 for ; Tue, 3 May 2016 15:43:33 +1000 (EST) Received: from d23av02.au.ibm.com (d23av02.au.ibm.com [9.190.235.138]) by d23relay10.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u435hP9v6488360 for ; Tue, 3 May 2016 15:43:33 +1000 Received: from d23av02.au.ibm.com (localhost [127.0.0.1]) by d23av02.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u435h046007911 for ; Tue, 3 May 2016 15:43:01 +1000 From: Gavin Shan To: linuxppc-dev@lists.ozlabs.org Cc: benh@kernel.crashing.org, mpe@ellerman.id.au, aik@ozlabs.ru, alistair@popple.id.au, Gavin Shan Subject: [PATCH v9 26/26] powerpc/powernv: Exclude root bus in pnv_pci_reset_secondary_bus() Date: Tue, 3 May 2016 15:41:45 +1000 Message-Id: <1462254105-24128-27-git-send-email-gwshan@linux.vnet.ibm.com> In-Reply-To: <1462254105-24128-1-git-send-email-gwshan@linux.vnet.ibm.com> References: <1462254105-24128-1-git-send-email-gwshan@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , The function pnv_pci_reset_secondary_bus() is called like below. It's impossible for call the function on root bus. So it's safe to remove the root bus case in the function. No functional changes introduced. pci_parent_bus_reset() / pci_bus_reset() / pci_try_reset_bus() pci_reset_bridge_secondary_bus() pcibios_reset_secondary_bus() pnv_pci_reset_secondary_bus() Signed-off-by: Gavin Shan Reviewed-by: Daniel Axtens Reviewed-by: Alexey Kardashevskiy --- arch/powerpc/platforms/powernv/eeh-powernv.c | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c index 9226df1..593b8dc 100644 --- a/arch/powerpc/platforms/powernv/eeh-powernv.c +++ b/arch/powerpc/platforms/powernv/eeh-powernv.c @@ -868,16 +868,8 @@ static int pnv_eeh_bridge_reset(struct pci_dev *dev, int option) void pnv_pci_reset_secondary_bus(struct pci_dev *dev) { - struct pci_controller *hose; - - if (pci_is_root_bus(dev->bus)) { - hose = pci_bus_to_host(dev->bus); - pnv_eeh_root_reset(hose, EEH_RESET_HOT); - pnv_eeh_root_reset(hose, EEH_RESET_DEACTIVATE); - } else { - pnv_eeh_bridge_reset(dev, EEH_RESET_HOT); - pnv_eeh_bridge_reset(dev, EEH_RESET_DEACTIVATE); - } + pnv_eeh_bridge_reset(dev, EEH_RESET_HOT); + pnv_eeh_bridge_reset(dev, EEH_RESET_DEACTIVATE); } static void pnv_eeh_wait_for_pending(struct pci_dn *pdn, const char *type, -- 2.1.0