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| author | Dave Airlie <airlied@redhat.com> | 2009-08-06 09:39:01 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2009-08-06 09:42:42 +1000 |
| commit | dedd31b3bcdeea12955bf565b8e3f2a9d3c66057 (patch) | |
| tree | 0fb0b0bf1efc367d82a5299d531f7b5111be225f | |
| parent | 2bda5b733bb12854760750c08138db95e77aea0c (diff) | |
| download | libpciaccess-dedd31b3bcdeea12955bf565b8e3f2a9d3c66057.tar.gz libpciaccess-dedd31b3bcdeea12955bf565b8e3f2a9d3c66057.tar.bz2 libpciaccess-dedd31b3bcdeea12955bf565b8e3f2a9d3c66057.zip | |
pciaccess: make linux rom reading fallback optional
On kernels which have ROM files, the boot VGA rom file
will contain the 0xc0000 file anyways. If another card
is missing a rom file there is no need for this.
This is fallback is disabled by default, on the premise
that distro shipping this new a pciaccess will be running
on kernels with working rom support which is been upstream
for a long time
| -rw-r--r-- | configure.ac | 8 | ||||
| -rw-r--r-- | src/linux_sysfs.c | 5 |
2 files changed, 13 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index c55112c..528e32b 100644 --- a/configure.ac +++ b/configure.ac @@ -43,6 +43,14 @@ AC_ARG_WITH(pciids-path, AC_HELP_STRING([--with-pciids-path=PCIIDS_PATH], [Path to pci.ids file]), [pciids_path="$withval"]) AC_DEFINE_DIR(PCIIDS_PATH, pciids_path, [Path to pci.ids]) +AC_ARG_ENABLE(linux-rom-fallback, AS_HELP_STRING([--enable-linux-rom-fallback], + [Enable support for falling back to /dev/mem for roms (default: enabled)]), + [LINUX_ROM=$enableval],[LINUX_ROM=no]) + +if test "x$LINUX_ROM" = xyes; then + AC_DEFINE(LINUX_ROM, 1, [Linux ROM read fallback]) +fi + use_zlib=no AC_ARG_WITH(zlib, AC_HELP_STRING([--with-zlib], [Enable zlib support to read gzip compressed pci.ids]), diff --git a/src/linux_sysfs.c b/src/linux_sysfs.c index 1ae9e52..7fcd327 100644 --- a/src/linux_sysfs.c +++ b/src/linux_sysfs.c @@ -325,10 +325,15 @@ pci_device_linux_sysfs_read_rom( struct pci_device * dev, void * buffer ) fd = open( name, O_RDWR ); if ( fd == -1 ) { +#ifdef LINUX_ROM /* If reading the ROM using sysfs fails, fall back to the old * /dev/mem based interface. + * disable this for newer kernels using configure */ return pci_device_linux_devmem_read_rom(dev, buffer); +#else + return errno; +#endif } |