[{"id":1755859,"web_url":"http://patchwork.ozlabs.org/comment/1755859/","msgid":"<2faa9545-3440-9d37-1b4f-56595d704b93@au1.ibm.com>","date":"2017-08-24T04:45:37","subject":"Re: [PATCH kernel 3/5] powerpc/eeh: Remove unnecessary pointer to\n\tphb from eeh_dev","submitter":{"id":66955,"url":"http://patchwork.ozlabs.org/api/people/66955/","name":"Andrew Donnellan","email":"andrew.donnellan@au1.ibm.com"},"content":"On 23/08/17 20:18, Alexey Kardashevskiy wrote:\n> The eeh_dev struct already holds a pointer to pci_dn which it does not\n> exist without and pci_dn itself holds the very same pointer so just\n> use it.\n> \n> Signed-off-by: Alexey Kardashevskiy \n\nReviewed-by: Andrew Donnellan \n\n> ---\n> arch/powerpc/include/asm/eeh.h | 1 -\n> arch/powerpc/kernel/eeh.c | 7 +++----\n> arch/powerpc/kernel/eeh_dev.c | 2 --\n> arch/powerpc/kernel/eeh_driver.c | 2 +-\n> arch/powerpc/kernel/eeh_pe.c | 24 +++++++++++++-----------\n> arch/powerpc/platforms/powernv/eeh-powernv.c | 5 ++---\n> 6 files changed, 19 insertions(+), 22 deletions(-)\n> \n> diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h\n> index 26a6a43f8799..777d37aa0a7f 100644\n> --- a/arch/powerpc/include/asm/eeh.h\n> +++ b/arch/powerpc/include/asm/eeh.h\n> @@ -141,7 +141,6 @@ struct eeh_dev {\n> \tstruct eeh_pe *pe;\t\t/* Associated PE\t\t*/\n> \tstruct list_head list;\t\t/* Form link list in the PE\t*/\n> \tstruct list_head rmv_list;\t/* Record the removed edevs\t*/\n> -\tstruct pci_controller *phb;\t/* Associated PHB\t\t*/\n> \tstruct pci_dn *pdn;\t\t/* Associated PCI device node\t*/\n> \tstruct pci_dev *pdev;\t\t/* Associated PCI device\t*/\n> \tbool in_error;\t\t\t/* Error flag for edev\t\t*/\n> diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c\n> index 63992b2d8e15..c877014d11ce 100644\n> --- a/arch/powerpc/kernel/eeh.c\n> +++ b/arch/powerpc/kernel/eeh.c\n> @@ -169,10 +169,10 @@ static size_t eeh_dump_dev_log(struct eeh_dev *edev, char *buf, size_t len)\n> \tchar buffer[128];\n> \n> \tn += scnprintf(buf+n, len-n, \"%04x:%02x:%02x.%01x\\n\",\n> -\t\t edev->phb->global_number, pdn->busno,\n> +\t\t pdn->phb->global_number, pdn->busno,\n> \t\t PCI_SLOT(pdn->devfn), PCI_FUNC(pdn->devfn));\n> \tpr_warn(\"EEH: of node=%04x:%02x:%02x.%01x\\n\",\n> -\t\tedev->phb->global_number, pdn->busno,\n> +\t\tpdn->phb->global_number, pdn->busno,\n> \t\tPCI_SLOT(pdn->devfn), PCI_FUNC(pdn->devfn));\n> \n> \teeh_ops->read_config(pdn, PCI_VENDOR_ID, 4, &cfg);\n> @@ -1064,7 +1064,7 @@ core_initcall_sync(eeh_init);\n> */\n> void eeh_add_device_early(struct pci_dn *pdn)\n> {\n> -\tstruct pci_controller *phb;\n> +\tstruct pci_controller *phb = pdn ? pdn->phb : NULL;\n> \tstruct eeh_dev *edev = pdn_to_eeh_dev(pdn);\n> \n> \tif (!edev)\n> @@ -1074,7 +1074,6 @@ void eeh_add_device_early(struct pci_dn *pdn)\n> \t\treturn;\n> \n> \t/* USB Bus children of PCI devices will not have BUID's */\n> -\tphb = edev->phb;\n> \tif (NULL == phb ||\n> \t (eeh_has_flag(EEH_PROBE_MODE_DEVTREE) && 0 == phb->buid))\n> \t\treturn;\n> diff --git a/arch/powerpc/kernel/eeh_dev.c b/arch/powerpc/kernel/eeh_dev.c\n> index d6b2ca70d14d..bdf4a3698a35 100644\n> --- a/arch/powerpc/kernel/eeh_dev.c\n> +++ b/arch/powerpc/kernel/eeh_dev.c\n> @@ -50,7 +50,6 @@\n> */\n> struct eeh_dev *eeh_dev_init(struct pci_dn *pdn)\n> {\n> -\tstruct pci_controller *phb = pdn->phb;\n> \tstruct eeh_dev *edev;\n> \n> \t/* Allocate EEH device */\n> @@ -64,7 +63,6 @@ struct eeh_dev *eeh_dev_init(struct pci_dn *pdn)\n> \t/* Associate EEH device with OF node */\n> \tpdn->edev = edev;\n> \tedev->pdn = pdn;\n> -\tedev->phb = phb;\n> \tINIT_LIST_HEAD(&edev->list);\n> \tINIT_LIST_HEAD(&edev->rmv_list);\n> \n> diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c\n> index c405c79e50cd..8b840191df59 100644\n> --- a/arch/powerpc/kernel/eeh_driver.c\n> +++ b/arch/powerpc/kernel/eeh_driver.c\n> @@ -428,7 +428,7 @@ static void *eeh_add_virt_device(void *data, void *userdata)\n> \n> \tif (!(edev->physfn)) {\n> \t\tpr_warn(\"%s: EEH dev %04x:%02x:%02x.%01x not for VF\\n\",\n> -\t\t\t__func__, edev->phb->global_number, pdn->busno,\n> +\t\t\t__func__, pdn->phb->global_number, pdn->busno,\n> \t\t\tPCI_SLOT(pdn->devfn), PCI_FUNC(pdn->devfn));\n> \t\treturn NULL;\n> \t}\n> diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c\n> index 84d79f3da7d6..419c3f07afd5 100644\n> --- a/arch/powerpc/kernel/eeh_pe.c\n> +++ b/arch/powerpc/kernel/eeh_pe.c\n> @@ -339,11 +339,12 @@ static struct eeh_pe *eeh_pe_get_parent(struct eeh_dev *edev)\n> int eeh_add_to_parent_pe(struct eeh_dev *edev)\n> {\n> \tstruct eeh_pe *pe, *parent;\n> +\tstruct pci_dn *pdn = eeh_dev_to_pdn(edev);\n> \n> \t/* Check if the PE number is valid */\n> \tif (!eeh_has_flag(EEH_VALID_PE_ZERO) && !edev->pe_config_addr) {\n> \t\tpr_err(\"%s: Invalid PE#0 for edev 0x%x on PHB#%x\\n\",\n> -\t\t __func__, edev->config_addr, edev->phb->global_number);\n> +\t\t __func__, edev->config_addr, pdn->phb->global_number);\n> \t\treturn -EINVAL;\n> \t}\n> \n> @@ -353,7 +354,7 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)\n> \t * PE should be composed of PCI bus and its subordinate\n> \t * components.\n> \t */\n> -\tpe = eeh_pe_get(edev->pdn->phb, edev->pe_config_addr,\n> +\tpe = eeh_pe_get(pdn->phb, edev->pe_config_addr,\n> \t\t\tedev->config_addr);\n> \tif (pe && !(pe->type & EEH_PE_INVALID)) {\n> \t\t/* Mark the PE as type of PCI bus */\n> @@ -363,7 +364,7 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)\n> \t\t/* Put the edev to PE */\n> \t\tlist_add_tail(&edev->list, &pe->edevs);\n> \t\tpr_debug(\"EEH: Add %04x:%02x:%02x.%01x to Bus PE#%x\\n\",\n> -\t\t\tedev->phb->global_number,\n> +\t\t\t pdn->phb->global_number,\n> \t\t\tedev->config_addr >> 8,\n> \t\t\tPCI_SLOT(edev->config_addr & 0xFF),\n> \t\t\tPCI_FUNC(edev->config_addr & 0xFF),\n> @@ -386,7 +387,7 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)\n> \n> \t\tpr_debug(\"EEH: Add %04x:%02x:%02x.%01x to Device \"\n> \t\t\t \"PE#%x, Parent PE#%x\\n\",\n> -\t\t\tedev->phb->global_number,\n> +\t\t\t pdn->phb->global_number,\n> \t\t\tedev->config_addr >> 8,\n> PCI_SLOT(edev->config_addr & 0xFF),\n> PCI_FUNC(edev->config_addr & 0xFF),\n> @@ -396,9 +397,9 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)\n> \n> \t/* Create a new EEH PE */\n> \tif (edev->physfn)\n> -\t\tpe = eeh_pe_alloc(edev->phb, EEH_PE_VF);\n> +\t\tpe = eeh_pe_alloc(pdn->phb, EEH_PE_VF);\n> \telse\n> -\t\tpe = eeh_pe_alloc(edev->phb, EEH_PE_DEVICE);\n> +\t\tpe = eeh_pe_alloc(pdn->phb, EEH_PE_DEVICE);\n> \tif (!pe) {\n> \t\tpr_err(\"%s: out of memory!\\n\", __func__);\n> \t\treturn -ENOMEM;\n> @@ -414,10 +415,10 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)\n> \t */\n> \tparent = eeh_pe_get_parent(edev);\n> \tif (!parent) {\n> -\t\tparent = eeh_phb_pe_get(edev->phb);\n> +\t\tparent = eeh_phb_pe_get(pdn->phb);\n> \t\tif (!parent) {\n> \t\t\tpr_err(\"%s: No PHB PE is found (PHB Domain=%d)\\n\",\n> -\t\t\t\t__func__, edev->phb->global_number);\n> +\t\t\t\t__func__, pdn->phb->global_number);\n> \t\t\tedev->pe = NULL;\n> \t\t\tkfree(pe);\n> \t\t\treturn -EEXIST;\n> @@ -434,7 +435,7 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)\n> \tedev->pe = pe;\n> \tpr_debug(\"EEH: Add %04x:%02x:%02x.%01x to \"\n> \t\t \"Device PE#%x, Parent PE#%x\\n\",\n> -\t\t edev->phb->global_number,\n> +\t\t pdn->phb->global_number,\n> \t\t edev->config_addr >> 8,\n> \t\t PCI_SLOT(edev->config_addr & 0xFF),\n> \t\t PCI_FUNC(edev->config_addr & 0xFF),\n> @@ -456,10 +457,11 @@ int eeh_rmv_from_parent_pe(struct eeh_dev *edev)\n> {\n> \tstruct eeh_pe *pe, *parent, *child;\n> \tint cnt;\n> +\tstruct pci_dn *pdn = eeh_dev_to_pdn(edev);\n> \n> \tif (!edev->pe) {\n> \t\tpr_debug(\"%s: No PE found for device %04x:%02x:%02x.%01x\\n\",\n> -\t\t\t __func__, edev->phb->global_number,\n> +\t\t\t __func__, pdn->phb->global_number,\n> \t\t\t edev->config_addr >> 8,\n> \t\t\t PCI_SLOT(edev->config_addr & 0xFF),\n> \t\t\t PCI_FUNC(edev->config_addr & 0xFF));\n> @@ -722,7 +724,7 @@ static void eeh_bridge_check_link(struct eeh_dev *edev)\n> \t\treturn;\n> \n> \tpr_debug(\"%s: Check PCIe link for %04x:%02x:%02x.%01x ...\\n\",\n> -\t\t __func__, edev->phb->global_number,\n> +\t\t __func__, pdn->phb->global_number,\n> \t\t edev->config_addr >> 8,\n> \t\t PCI_SLOT(edev->config_addr & 0xFF),\n> \t\t PCI_FUNC(edev->config_addr & 0xFF));\n> diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c\n> index ac8c01cd251c..552b0cd4e8ba 100644\n> --- a/arch/powerpc/platforms/powernv/eeh-powernv.c\n> +++ b/arch/powerpc/platforms/powernv/eeh-powernv.c\n> @@ -926,7 +926,6 @@ void pnv_pci_reset_secondary_bus(struct pci_dev *dev)\n> static void pnv_eeh_wait_for_pending(struct pci_dn *pdn, const char *type,\n> \t\t\t\t int pos, u16 mask)\n> {\n> -\tstruct eeh_dev *edev = pdn_to_eeh_dev(pdn);\n> \tint i, status = 0;\n> \n> \t/* Wait for Transaction Pending bit to be cleared */\n> @@ -940,7 +939,7 @@ static void pnv_eeh_wait_for_pending(struct pci_dn *pdn, const char *type,\n> \n> \tpr_warn(\"%s: Pending transaction while issuing %sFLR to %04x:%02x:%02x.%01x\\n\",\n> \t\t__func__, type,\n> -\t\tedev->phb->global_number, pdn->busno,\n> +\t\tpdn->phb->global_number, pdn->busno,\n> \t\tPCI_SLOT(pdn->devfn), PCI_FUNC(pdn->devfn));\n> }\n> \n> @@ -1714,7 +1713,7 @@ static int pnv_eeh_restore_config(struct pci_dn *pdn)\n> \tif (edev->physfn) {\n> \t\tret = pnv_eeh_restore_vf_config(pdn);\n> \t} else {\n> -\t\tphb = edev->phb->private_data;\n> +\t\tphb = pdn->phb->private_data;\n> \t\tret = opal_pci_reinit(phb->opal_id,\n> \t\t\t\t OPAL_REINIT_PCI_DEV, edev->config_addr);\n> \t}\n>","headers":{"Return-Path":"","X-Original-To":["patchwork-incoming@ozlabs.org","linuxppc-dev@lists.ozlabs.org"],"Delivered-To":["patchwork-incoming@ozlabs.org","linuxppc-dev@lists.ozlabs.org"],"Received":["from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])\n\t(using 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Linux x86_64; rv:52.0) Gecko/20100101\n\tThunderbird/52.2.1","MIME-Version":"1.0","In-Reply-To":"<20170823101901.33961-4-aik@ozlabs.ru>","Content-Type":"text/plain; charset=utf-8; format=flowed","Content-Language":"en-AU","Content-Transfer-Encoding":"7bit","X-TM-AS-MML":"disable","x-cbid":"17082404-0044-0000-0000-00000283E03D","X-IBM-AV-DETECTION":"SAVI=unused REMOTE=unused XFE=unused","x-cbparentid":"17082404-0045-0000-0000-0000071741BE","Message-Id":"<2faa9545-3440-9d37-1b4f-56595d704b93@au1.ibm.com>","X-Proofpoint-Virus-Version":"vendor=fsecure engine=2.50.10432:, ,\n\tdefinitions=2017-08-24_01:, , signatures=0","X-Proofpoint-Spam-Details":"rule=outbound_notspam policy=outbound score=0\n\tspamscore=0 suspectscore=18\n\tmalwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam\n\tadjust=0 reason=mlx scancount=1 engine=8.0.1-1707230000\n\tdefinitions=main-1708240076","X-BeenThere":"linuxppc-dev@lists.ozlabs.org","X-Mailman-Version":"2.1.23","Precedence":"list","List-Id":"Linux on PowerPC Developers Mail List\n\t","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Cc":"Alistair Popple ,\n\tDavid Gibson ","Errors-To":"linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org","Sender":"\"Linuxppc-dev\"\n\t"}},{"id":1758386,"web_url":"http://patchwork.ozlabs.org/comment/1758386/","msgid":"<87efrwryyi.fsf@concordia.ellerman.id.au>","date":"2017-08-28T06:25:09","subject":"Re: [PATCH kernel 3/5] powerpc/eeh: Remove unnecessary pointer to\n\tphb from eeh_dev","submitter":{"id":46580,"url":"http://patchwork.ozlabs.org/api/people/46580/","name":"Michael Ellerman","email":"mpe@ellerman.id.au"},"content":"Alexey Kardashevskiy writes:\n\n> The eeh_dev struct already holds a pointer to pci_dn which it does not\n> exist without and pci_dn itself holds the very same pointer so just\n> use it.\n>\n> Signed-off-by: Alexey Kardashevskiy \n> ---\n> arch/powerpc/include/asm/eeh.h | 1 -\n> arch/powerpc/kernel/eeh.c | 7 +++----\n> arch/powerpc/kernel/eeh_dev.c | 2 --\n> arch/powerpc/kernel/eeh_driver.c | 2 +-\n> arch/powerpc/kernel/eeh_pe.c | 24 +++++++++++++-----------\n> arch/powerpc/platforms/powernv/eeh-powernv.c | 5 ++---\n\nDoesn't build ?\n\n arch/powerpc/platforms/pseries/eeh_pseries.c: In function ‘pseries_eeh_probe’:\n arch/powerpc/platforms/pseries/eeh_pseries.c:250:15: error: ‘struct eeh_dev’ has no member named ‘phb’\n pe.phb = edev->phb;\n ^~\n\ncheers","headers":{"Return-Path":"","X-Original-To":["patchwork-incoming@ozlabs.org","linuxppc-dev@lists.ozlabs.org"],"Delivered-To":["patchwork-incoming@ozlabs.org","linuxppc-dev@lists.ozlabs.org"],"Received":["from lists.ozlabs.org (lists.ozlabs.org [103.22.144.68])\n\t(using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xghcZ5PCXz9sNc\n\tfor ;\n\tMon, 28 Aug 2017 16:26:38 +1000 (AEST)","from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 3xghcZ4VyjzDqJr\n\tfor ;\n\tMon, 28 Aug 2017 16:26:38 +1000 (AEST)","from ozlabs.org (ozlabs.org [IPv6:2401:3900:2:1::2])\n\t(using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby lists.ozlabs.org (Postfix) with ESMTPS id 3xghZt5xd0zDq5m\n\tfor ;\n\tMon, 28 Aug 2017 16:25:10 +1000 (AEST)","from authenticated.ozlabs.org (localhost [127.0.0.1])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128\n\tbits)) (No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPSA id 3xghZt2jvwz9sNc;\n\tMon, 28 Aug 2017 16:25:10 +1000 (AEST)"],"From":"Michael Ellerman ","To":"Alexey Kardashevskiy , linuxppc-dev@lists.ozlabs.org","Subject":"Re: [PATCH kernel 3/5] powerpc/eeh: Remove unnecessary pointer to\n\tphb from eeh_dev","In-Reply-To":"<20170823101901.33961-4-aik@ozlabs.ru>","References":"<20170823101901.33961-1-aik@ozlabs.ru>\n\t<20170823101901.33961-4-aik@ozlabs.ru>","User-Agent":"Notmuch/0.21 (https://notmuchmail.org)","Date":"Mon, 28 Aug 2017 16:25:09 +1000","Message-ID":"<87efrwryyi.fsf@concordia.ellerman.id.au>","MIME-Version":"1.0","Content-Type":"text/plain; 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