mirror of
git://projects.qi-hardware.com/openwrt-packages.git
synced 2024-11-14 08:21:32 +02:00
25 lines
867 B
Diff
25 lines
867 B
Diff
Index: svgalib-1.4.3/src/fbdev.c
|
|
===================================================================
|
|
--- svgalib-1.4.3.orig/src/fbdev.c 2011-01-06 14:24:59.000000000 +0100
|
|
+++ svgalib-1.4.3/src/fbdev.c 2011-01-06 14:27:39.000000000 +0100
|
|
@@ -141,9 +141,17 @@
|
|
if (page != oldpage)
|
|
{
|
|
// munmap(BANKED_MEM_POINTER, __svgalib_banked_mem_size);
|
|
- mmap(BANKED_MEM_POINTER, __svgalib_banked_mem_size,
|
|
+ long size = __svgalib_banked_mem_size;
|
|
+ long offs = page * __svgalib_banked_mem_size;
|
|
+ if (size + offs > __svgalib_linear_mem_size)
|
|
+ size = __svgalib_linear_mem_size - offs;
|
|
+ if (size <= 0) {
|
|
+ fprintf (stderr, "invalid page %i requested", page);
|
|
+ }
|
|
+
|
|
+ mmap(BANKED_MEM_POINTER, size,
|
|
PROT_READ | PROT_WRITE, MAP_SHARED | MAP_FIXED,
|
|
- fbdev_fd, page * __svgalib_banked_mem_size);
|
|
+ fbdev_fd, offs);
|
|
oldpage = page;
|
|
}
|
|
}
|