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vfio-pci: use 32-bit comparisons for register address for gcc-4.5
Using ancient compilers (gcc-4.5 or older) on ARM, we get a link failure with the vfio-pci driver: ERROR: "__aeabi_lcmp" [drivers/vfio/pci/vfio-pci.ko] undefined! The reason is that the compiler tries to do a comparison of a 64-bit range. This changes it to convert to a 32-bit number explicitly first, as newer compilers do for themselves. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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1 changed files with 4 additions and 1 deletions
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@ -193,7 +193,10 @@ ssize_t vfio_pci_vga_rw(struct vfio_pci_device *vdev, char __user *buf,
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if (!vdev->has_vga)
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return -EINVAL;
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switch (pos) {
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if (pos > 0xbfffful)
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return -EINVAL;
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switch ((u32)pos) {
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case 0xa0000 ... 0xbffff:
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count = min(count, (size_t)(0xc0000 - pos));
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iomem = ioremap_nocache(0xa0000, 0xbffff - 0xa0000 + 1);
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