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intel_bios_dumper: handle rom_size == 0

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Some versions of libpciaccess on Linux set rom_size to 0 for VGA
devices.  While this behavior may change, intel_bios_dumper should
handle this situation to be compatible with current versions of the
library.

This fixes segmentation faults on affected systems.

Signed-off-by: Forest Bond <forest.bond@rapidrollout.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Forest Bond 2011-03-22 10:31:43 -04:00 committed by Chris Wilson
parent 3f10ff85bd
commit d641f0fd42
1 changed files with 5 additions and 0 deletions
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5
tools/intel_bios_dumper.c
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@ -77,6 +77,11 @@ int main(int argc, char **argv)
if (dev->vendor_id != 0x8086)
errx(1, "Graphics card is non-intel");
/* Some versions of libpciaccess correct this automatically, but some
* don't. */
if (dev->rom_size == 0)
dev->rom_size = 64 * 1024;
bios = malloc(dev->rom_size);
if (bios == NULL)
errx(1, "Couldn't allocate memory for BIOS data\n");