Dwayne Grant McConnell 17f88cebc2 [POWERPC] spufs: Read from signal files only if data is there ... We need to check the channel count of the signal notification registers before reading them, because it can be undefined when the count is zero. In order to read count and data atomically, we read from the saved context. This patch uses spu_acquire_saved() to force a context save before a /signal1 or /signal2 read. Because of this it is no longer necessary to have backing_ops and hw_ops versions of this function so they have been removed. Regular applications should not rely on reading this register to be fast, as it's conceptually a write-only file from the PPE perspective. Signed-off-by: Dwayne Grant McConnell <decimal@us.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>		2006-12-04 20:39:50 +11:00
..
boot	[POWERPC] Cleanup zImage handling of kernel entry with flat device tree	2006-12-04 20:39:34 +11:00
configs	Merge branch 'linux-2.6' into for-linus	2006-12-04 15:59:07 +11:00
kernel	[POWERPC] Fix wraparound problem in smp-tbsync on 32-bit	2006-12-04 20:39:35 +11:00
lib	[POWERPC] Disallow kprobes on emulate_step and branch_taken	2006-11-01 15:14:12 +11:00
math-emu	[POWERPC] ppc math-emu needs -fno-builtin-fabs for math.c and fabs.c	2006-09-26 15:24:35 +10:00
mm	[POWERPC] setup_kcore(): Fix incorrect function name in panic() call.	2006-12-04 20:39:39 +11:00
oprofile	[POWERPC] Fix oprofile support for e500 in arch/powerpc	2006-11-01 14:52:48 +11:00
platforms	[POWERPC] spufs: Read from signal files only if data is there	2006-12-04 20:39:50 +11:00
sysdev	[POWERPC] Don't compile arch/powerpc mpc52xx_pic driver for ARCH=ppc	2006-12-04 20:39:37 +11:00
xmon	[POWERPC] iSeries: fix xmon.c for combined build	2006-12-04 20:39:17 +11:00
Kconfig	[POWERPC] Remove ioremap64 and fixup_bigphys_addr	2006-12-04 20:39:04 +11:00
Kconfig.debug
Makefile	[POWERPC] Create a "wrapper" script and use it in arch/powerpc/boot	2006-09-28 14:30:02 +10:00