c48f285147
The wait instruction is only broken on the BCM4706 and not on the other similar SoCs. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> SVN-Revision: 38979
27 lines
833 B
Diff
27 lines
833 B
Diff
--- a/arch/mips/bcm47xx/setup.c
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+++ b/arch/mips/bcm47xx/setup.c
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@@ -35,6 +35,7 @@
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#include <asm/prom.h>
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#include <asm/reboot.h>
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#include <asm/time.h>
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+#include <asm/idle.h>
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#include <bcm47xx.h>
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#include <bcm47xx_nvram.h>
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#include <bcm47xx_board.h>
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@@ -214,6 +215,15 @@ static void __init bcm47xx_register_bcma
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panic("Failed to initialize BCMA bus (err %d)", err);
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bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL);
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+
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+ /* The BCM4706 has a problem with the CPU wait instruction.
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+ * When r4k_wait or r4k_wait_irqoff is used will just hang and
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+ * not return from a msleep(). Removing the cpu_wait
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+ * functionality is a workaround for this problem. The BCM4716
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+ * does not have this problem.
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+ */
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+ if (bcm47xx_bus.bcma.bus.chipinfo.id == BCMA_CHIP_ID_BCM4706)
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+ cpu_wait = NULL;
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}
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#endif
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