UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

[PATCH] AVR32: Don't try to iounmap P2 segment addresses 

While ioremap() will happily map a physical address through the
P2 (uncached) segment when appropriate, iounmap() doesn't know how
to handle those mappings.

This patch makes iounmap() do the right thing, i.e. nothing, for
such mappings.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Haavard Skinnemoen 2006-10-24 10:12:41 +02:00 committed by Linus Torvalds
parent 6ea850b5eb
commit bee8ce809f
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/avr32/mm/ioremap.c
View File

@ -77,6 +77,8 @@ void __iounmap(void __iomem *addr)
if ((unsigned long)addr >= P4SEG) if ((unsigned long)addr >= P4SEG)
return; return;
if (PXSEG(addr) == P2SEG)
return;
p = remove_vm_area((void *)(PAGE_MASK & (unsigned long __force)addr)); p = remove_vm_area((void *)(PAGE_MASK & (unsigned long __force)addr));
if (unlikely(!p)) { if (unlikely(!p)) {