Commit 498f09bc authored Jun 02, 2015 by Stephen Boyd Committed by Kevin Hilman Jul 01, 2015

soc: qcom: spm: Fix idle on THUMB2 kernels



The ifc6410 firmware always enters the kernel in ARM state from
deep idle. Use the cpu_resume_arm() wrapper instead of
cpu_resume() to property switch into the THUMB2 state when we
wake up from idle.

This fixes a problem reported by Kevin Hilman on next-20150601
where the ifc6410 fails to boot a THUMB2 kernel because the
platform's firmware always enters the kernel in ARM mode from
deep idle states.

Reported-by: Kevin Hilman <khilman@linaro.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Lina Iyer <lina.iyer@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Kevin Hilman <khilman@linaro.org>

parent 1a429fce

drivers/soc/qcom/spm.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -260,7 +260,7 @@ static int __init qcom_cpuidle_init(struct device_node *cpu_node, int cpu)
		/* We have atleast one power down mode */
		cpumask_clear(&mask);
		cpumask_set_cpu(cpu, &mask);
		qcom_scm_set_warm_boot_addr(cpu_resume, &mask);
		qcom_scm_set_warm_boot_addr(cpu_resume_arm, &mask);
		}

		per_cpu(qcom_idle_ops, cpu) = fns;

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