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deactivate mips wait instruction for MIPS 74K on Broadcom SoCs

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When not removing support for the wait instruction, when ruining on the
BCM4706 SoC the system stops after msleep() without an exception. I
haven't seen this problem on the other Broadcom SoCs with a 74K CPU,
but in the Broadcom SDK it is deactivated for all CPUs of this type.

SVN-Revision: 33496
This commit is contained in:
Hauke Mehrtens 2012-09-20 14:51:57 +00:00
parent 1067ccf9f7
commit fd7b2b5141
1 changed files with 12 additions and 0 deletions
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12
target/linux/brcm47xx/patches-3.3/170-fix-74k-cpu.patch Normal file
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@ -0,0 +1,12 @@
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -209,9 +209,6 @@ void __init check_wait(void)
break;
case CPU_74K:
- cpu_wait = r4k_wait;
- if ((c->processor_id & 0xff) >= PRID_REV_ENCODE_332(2, 1, 0))
- cpu_wait = r4k_wait_irqoff;
break;
case CPU_TX49XX: