Rob Herring 681f57171b pstore/ram: avoid atomic accesses for ioremapped regions ... commit 0405a5cec3 upstream. For persistent RAM outside of main memory, the memory may have limitations on supported accesses. For internal RAM on highbank platform exclusive accesses are not supported and will hang the system. So atomic_cmpxchg cannot be used. This commit uses spinlock protection for buffer size and start updates on ioremapped regions instead. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Anton Vorontsov <anton@enomsg.org> Signed-off-by: Tony Luck <tony.luck@intel.com> [hkp: Backported to 3.10: adjust context] Signed-off-by: HuKeping <hukeping@huawei.com>		2015-02-05 22:35:40 -08:00
..
ftrace.c	pstore/ftrace: Adjust for ftrace_ops->func prototype change	2012-12-12 19:50:04 -08:00
inode.c	pstore: d_alloc_name() doesn't return an ERR_PTR	2015-02-05 22:35:39 -08:00
internal.h	efi_pstore: Add a sequence counter to a variable name	2012-11-26 16:07:44 -08:00
Kconfig	pstore/ftrace: Convert to its own enable/disable debugfs knob	2012-09-06 22:16:58 -07:00
Makefile	pstore: Add persistent function tracing	2012-07-17 10:05:52 -07:00
platform.c	pstore: Avoid deadlock in panic and emergency-restart path	2013-01-11 10:20:50 -08:00
ram.c	pstore: Fix NULL pointer fault if get NULL prz in ramoops_get_next_prz	2015-02-05 22:35:40 -08:00
ram_core.c	pstore/ram: avoid atomic accesses for ioremapped regions	2015-02-05 22:35:40 -08:00