From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm1-f65.google.com ([209.85.128.65]:50529 "EHLO mail-wm1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726864AbfHPJZF (ORCPT ); Fri, 16 Aug 2019 05:25:05 -0400 From: Denis Efremov Subject: [PATCH v2 01/10] PCI: Add define for the number of standard PCI BARs Date: Fri, 16 Aug 2019 12:24:28 +0300 Message-Id: <20190816092437.31846-2-efremov@linux.com> In-Reply-To: <20190816092437.31846-1-efremov@linux.com> References: <20190816092437.31846-1-efremov@linux.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-s390-owner@vger.kernel.org List-ID: To: Bjorn Helgaas Cc: Denis Efremov , linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Sebastian Ott , Gerald Schaefer , "H. Peter Anvin" , Giuseppe Cavallaro , Alexandre Torgue , Matt Porter , Alexandre Bounine , Peter Jones , Bartlomiej Zolnierkiewicz , Cornelia Huck , Alex Williamson , Andrew Murray , Jose Abreu , kvm@vger.kernel.org, linux-fbdev@vger.kernel.org, netdev@vger.kernel.org, x86@kernel.org, linux-s390@vger.kernel.org Code that iterates over all standard PCI BARs typically uses PCI_STD_RESOURCE_END. However, it requires the "unusual" loop condition "i <= PCI_STD_RESOURCE_END" rather than something more standard like "i < PCI_STD_NUM_BARS". This patch adds the definition PCI_STD_NUM_BARS which is equivalent to "PCI_STD_RESOURCE_END + 1" and updates loop conditions to use it. Signed-off-by: Denis Efremov --- drivers/pci/quirks.c | 2 +- include/linux/pci.h | 2 +- include/uapi/linux/pci_regs.h | 1 + 3 files changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 208aacf39329..02bdf3a0231e 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -475,7 +475,7 @@ static void quirk_extend_bar_to_page(struct pci_dev *dev) { int i; - for (i = 0; i <= PCI_STD_RESOURCE_END; i++) { + for (i = 0; i < PCI_STD_NUM_BARS; i++) { struct resource *r = &dev->resource[i]; if (r->flags & IORESOURCE_MEM && resource_size(r) < PAGE_SIZE) { diff --git a/include/linux/pci.h b/include/linux/pci.h index 9e700d9f9f28..7b9590d5dc2d 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -76,7 +76,7 @@ enum pci_mmap_state { enum { /* #0-5: standard PCI resources */ PCI_STD_RESOURCES, - PCI_STD_RESOURCE_END = 5, + PCI_STD_RESOURCE_END = PCI_STD_RESOURCES + PCI_STD_NUM_BARS - 1, /* #6: expansion ROM resource */ PCI_ROM_RESOURCE, diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h index f28e562d7ca8..68b571d491eb 100644 --- a/include/uapi/linux/pci_regs.h +++ b/include/uapi/linux/pci_regs.h @@ -34,6 +34,7 @@ * of which the first 64 bytes are standardized as follows: */ #define PCI_STD_HEADER_SIZEOF 64 +#define PCI_STD_NUM_BARS 6 /* Number of standard BARs */ #define PCI_VENDOR_ID 0x00 /* 16 bits */ #define PCI_DEVICE_ID 0x02 /* 16 bits */ #define PCI_COMMAND 0x04 /* 16 bits */ -- 2.21.0