openwrt/flashrom
1
0
Fork 0
mirror of https://review.coreboot.org/flashrom.git synced 2025-04-27 15:12:36 +02:00
Code Issues Releases Wiki Activity

DJGPP: Avoid leaking memory on lowmem mapping error

Browse Source 
Add a clarifying comment about why low memory is never unmapped.

Corresponding to flashrom svn r1195.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Rudolf Marek <r.marek@assembler.cz>
This commit is contained in:
Carl-Daniel Hailfinger 2010-10-05 23:21:51 +00:00
parent 1db7a448b3
commit 602de9829c
1 changed files with 5 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
physmap.c
View File

@ -56,6 +56,8 @@ static void *map_first_meg(unsigned long phys_addr, size_t len)
}
if (__djgpp_map_physical_memory(realmem_map, (1024 * 1024), 0)) {
free(realmem_map);
realmem_map = NULL;
return ERROR_PTR;
}
@ -95,7 +97,9 @@ void physunmap(void *virt_addr, size_t len)
{
__dpmi_meminfo mi;
/* we ignore unmaps for our first 1MB */
/* There is no known way to unmap the first 1 MB. The DPMI server will
* do this for us on exit.
*/
if ((virt_addr >= realmem_map) && ((virt_addr + len) <= (realmem_map + (1024 * 1024)))) {
return;
}