xiaomi-sm8450/android_kernel_xiaomi_sm8450
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[POWERPC] check firmware state before suspending

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Currently the kernel blindly halts all the processors and calls the
ibm,suspend-me rtas call.  If the firmware is not in the correct
state, we then re-start all the processors and return.  It is much
smarter to first check the firmware state, and only if it is waiting,
call the ibm,suspend-me call.

Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Dave C Boutcher
2006-06-12 19:49:20 -05:00
committed by Paul Mackerras
parent 0e4aa9c200
commit 368a6ba5d1
3 changed files with 33 additions and 0 deletions
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include/asm-powerpc/rtas.h
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@@ -24,6 +24,7 @@
#define RTAS_RMOBUF_MAX (64 * 1024)
/* RTAS return status codes */
#define RTAS_NOT_SUSPENDABLE -9004
#define RTAS_BUSY -2 /* RTAS Busy */
#define RTAS_EXTENDED_DELAY_MIN 9900
#define RTAS_EXTENDED_DELAY_MAX 9905