Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-19 02:21:47 +00:00
Code Issues Packages Projects Releases Wiki Activity

sh: Handle unmapping of fixed slots transparently in iounmap().

Browse Source 
iounmap() should balance whatever is done by ioremap(). Presently
ioremap() can do any of fixed mappings, PMB mappings, or page table
mappings. Presently only the latter two are handled through the standard
unmap path, so tie in the fixed unmapping, too.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2010-01-18 21:33:08 +09:00
parent 4f744affc3
commit 12b6b01cb4
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/sh/mm/ioremap.c
View File

@ -142,6 +142,12 @@ void __iounmap(void __iomem *addr)
if (iomapping_nontranslatable(vaddr))
return;
/*
* There's no VMA if it's from an early fixed mapping.
*/
if (iounmap_fixed(addr) == 0)
return;
#ifdef CONFIG_PMB
/*
* Purge any PMB entries that may have been established for this