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vesa: avoid concurrent access by acpi driver

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Issue #843
This commit is contained in:
Alexander Boettcher 2013-08-20 13:47:29 +02:00 committed by Norman Feske
parent d2f7c7bec4
commit 7dfab657b2
1 changed files with 8 additions and 0 deletions
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8
libports/src/drivers/framebuffer/vesa/ifx86emu.cc
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@ -21,6 +21,7 @@
#include <io_port_session/connection.h> #include <io_port_session/connection.h>
#include <io_mem_session/connection.h> #include <io_mem_session/connection.h>
#include <pci_session/connection.h>
#include "ifx86emu.h" #include "ifx86emu.h"
#include "framebuffer.h" #include "framebuffer.h"
@ -506,6 +507,13 @@ uint16_t X86emu::x86emu_cmd(uint16_t eax, uint16_t ebx, uint16_t ecx,
int X86emu::init(void) int X86emu::init(void)
{ {
/*
* Wait until Acpi/Pci driver initialization is done to avoid potentially
* concurrently accesses by this driver and the Acpi/Pci driver to the
* graphic device (PCI config space).
*/
Pci::Connection conn;
if (map_code_area()) if (map_code_area())
return -1; return -1;