From 09e97b6c8754c91470455e69ebd827b741f80af5 Mon Sep 17 00:00:00 2001 From: Lina Iyer Date: Wed, 5 Sep 2018 14:14:38 -0600 Subject: [PATCH] drivers: qcom: rpmh-rsc: clear wait_for_compl after use The wait_for_compl register ensures the request sequence is maintained when sending requests from the TCS. Clear the register after sending active request and during invalidate of the sleep and wake TCS. Reported-by: Raju P.L.S.S.S.N Signed-off-by: Lina Iyer Signed-off-by: Andy Gross --- drivers/soc/qcom/rpmh-rsc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c index ee75da66d64b..75bd9a83aef0 100644 --- a/drivers/soc/qcom/rpmh-rsc.c +++ b/drivers/soc/qcom/rpmh-rsc.c @@ -121,6 +121,7 @@ static int tcs_invalidate(struct rsc_drv *drv, int type) return -EAGAIN; } write_tcs_reg_sync(drv, RSC_DRV_CMD_ENABLE, m, 0); + write_tcs_reg_sync(drv, RSC_DRV_CMD_WAIT_FOR_CMPL, m, 0); } bitmap_zero(tcs->slots, MAX_TCS_SLOTS); spin_unlock(&tcs->lock); @@ -239,6 +240,7 @@ static irqreturn_t tcs_tx_done(int irq, void *p) skip: /* Reclaim the TCS */ write_tcs_reg(drv, RSC_DRV_CMD_ENABLE, i, 0); + write_tcs_reg(drv, RSC_DRV_CMD_WAIT_FOR_CMPL, i, 0); write_tcs_reg(drv, RSC_DRV_IRQ_CLEAR, 0, BIT(i)); spin_lock(&drv->lock); clear_bit(i, drv->tcs_in_use);