linux-kernel - [PATCH] add pci revision id to struct pci

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Date:	Mon, 6 Nov 2006 20:40:14 +0800
From:	"Conke Hu" <conke.hu@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: [PATCH] add pci revision id to struct pci_dev

Hi all,
    PCI revision id had better be added to struct pci_dev and
initialized in pci_scan_device.

    Signed-off-by: Conke Hu <conke.hu@...il.com>

-----
diff -Nur linux-2.6.19-rc4-git10.orig/drivers/pci/probe.c
linux-2.6.19-rc4-git10/drivers/pci/probe.c
--- linux-2.6.19-rc4-git10.orig/drivers/pci/probe.c     2006-11-06
19:38:43.000000000 +0800
+++ linux-2.6.19-rc4-git10/drivers/pci/probe.c  2006-11-06
19:41:17.000000000 +0800
@@ -785,6 +785,7 @@
       u32 l;
       u8 hdr_type;
       int delay = 1;
+       u8 rev;

       if (pci_bus_read_config_dword(bus, devfn, PCI_VENDOR_ID, &l))
               return NULL;
@@ -813,6 +814,9 @@
       if (pci_bus_read_config_byte(bus, devfn, PCI_HEADER_TYPE, &hdr_type))
               return NULL;

+       if (pci_bus_read_config_byte(bus, devfn, PCI_REVISION_ID, &rev))
+               return NULL;
+
       dev = kzalloc(sizeof(struct pci_dev), GFP_KERNEL);
       if (!dev)
               return NULL;
@@ -828,6 +832,7 @@
       dev->device = (l >> 16) & 0xffff;
       dev->cfg_size = pci_cfg_space_size(dev);
       dev->error_state = pci_channel_io_normal;
+       dev->revision = rev;

       /* Assume 32-bit PCI; let 64-bit PCI cards (which are far rarer)
          set this higher, assuming the system even supports it.  */
diff -Nur linux-2.6.19-rc4-git10.orig/include/linux/pci.h
linux-2.6.19-rc4-git10/include/linux/pci.h
--- linux-2.6.19-rc4-git10.orig/include/linux/pci.h     2006-11-06
19:39:07.000000000 +0800
+++ linux-2.6.19-rc4-git10/include/linux/pci.h  2006-11-06
19:41:57.000000000 +0800
@@ -123,6 +123,7 @@
       unsigned short  device;
       unsigned short  subsystem_vendor;
       unsigned short  subsystem_device;
+       u8              revision;       /* PCI revision ID */
       unsigned int    class;          /* 3 bytes: (base,sub,prog-if) */
       u8              hdr_type;       /* PCI header type (`multi'
flag masked out) */
       u8              rom_base_reg;   /* which config register
controls the ROM */
-
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