Hi all,
I found that hardcoded instruction in inline asm can cause certains certain
features fail to work on ARM platform due to endianness.
As an example, consider the following code snippet of platform_do_lowpower
function from arch/arm/mach-realview/hotplug.c:
/ *
* here's the WFI
*/
asm(".word 0xe320f003\n"
:
:
: "memory", "cc");
The instruction generated from this inline asm will not work on big-endian
ARM platform, such as ARM BE-8 format. Instead, an exception will be generated.
Here the code should be:
/ *
* here's the WFI
*/
asm("WFI\n"
:
:
: "memory", "cc");
Seems the kernel doesn't support ARM BE-8 well. I don't know why this
problem happens.
Can anyone tell me who owns this part? I can prepare a patch then.
Thanks.
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