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From: Douglas Anderson <dianders@chromium.org>
To: Andy Gross <agross@kernel.org>,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	Maulik Shah <mkshah@codeaurora.org>
Cc: Rajendra Nayak <rnayak@codeaurora.org>,
	mka@chromium.org, evgreen@chromium.org, swboyd@chromium.org,
	Lina Iyer <ilina@codeaurora.org>,
	Douglas Anderson <dianders@chromium.org>,
	linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [RFT PATCH 7/9] drivers: qcom: rpmh-rsc: Warning if tcs_write() used for non-active
Date: Fri,  6 Mar 2020 15:59:49 -0800	[thread overview]
Message-ID: <20200306155707.RFT.7.I8e187cdfb7a31f5bb7724f1f937f2862ee464a35@changeid> (raw)
In-Reply-To: <20200306235951.214678-1-dianders@chromium.org>

tcs_write() is documented to only be useful for writing
RPMH_ACTIVE_ONLY_STATE.  Let's be loud if someone messes up.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
---

 drivers/soc/qcom/rpmh-rsc.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c
index c63441182358..693873fce895 100644
--- a/drivers/soc/qcom/rpmh-rsc.c
+++ b/drivers/soc/qcom/rpmh-rsc.c
@@ -550,6 +550,12 @@ static int tcs_write(struct rsc_drv *drv, const struct tcs_request *msg)
 	unsigned long flags;
 	int ret;
 
+	/*
+	 * It only makes sense to grab a whole TCS for ourselves if we're
+	 * triggering right away, which we only do for ACTIVE_ONLY.
+	 */
+	WARN_ON(msg->state != RPMH_ACTIVE_ONLY_STATE);
+
 	tcs = get_tcs_for_msg(drv, msg);
 	if (IS_ERR(tcs))
 		return PTR_ERR(tcs);
-- 
2.25.1.481.gfbce0eb801-goog


  parent reply	other threads:[~2020-03-07  0:00 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-06 23:59 [RFT PATCH 0/9] drivers: qcom: rpmh-rsc: Cleanup / add lots of comments Douglas Anderson
2020-03-06 23:59 ` [RFT PATCH 1/9] drivers: qcom: rpmh-rsc: Clean code reading/writing regs/cmds Douglas Anderson
2020-03-11  8:47   ` Maulik Shah
2020-03-11 15:03     ` Doug Anderson
2020-03-11 16:17       ` Matthias Kaehlcke
2020-03-11 19:30         ` Stephen Boyd
2020-03-06 23:59 ` [RFT PATCH 2/9] drivers: qcom: rpmh-rsc: Document the register layout better Douglas Anderson
2020-03-11  9:35   ` Maulik Shah
2020-03-11 15:27     ` Doug Anderson
2020-03-11 18:49       ` Evan Green
2020-03-11 20:08       ` Stephen Boyd
2020-03-11 22:35         ` Doug Anderson
2020-03-06 23:59 ` [RFT PATCH 3/9] drivers: qcom: rpmh-rsc: Fold tcs_ctrl_write() into its single caller Douglas Anderson
2020-03-11  9:50   ` Maulik Shah
2020-03-06 23:59 ` [RFT PATCH 4/9] drivers: qcom: rpmh-rsc: Remove get_tcs_of_type() abstraction Douglas Anderson
2020-03-11 12:02   ` Maulik Shah
2020-03-06 23:59 ` [RFT PATCH 5/9] drivers: qcom: rpmh-rsc: A lot of comments Douglas Anderson
2020-03-06 23:59 ` [RFT PATCH 6/9] drivers: qcom: rpmh-rsc: Only use "tcs_in_use" for ACTIVE_ONLY Douglas Anderson
2020-03-11  0:33   ` Doug Anderson
2020-03-06 23:59 ` Douglas Anderson [this message]
2020-03-06 23:59 ` [RFT PATCH 8/9] drivers: qcom: rpmh-rsc: spin_lock_irqsave() for tcs_invalidate() Douglas Anderson
2020-03-06 23:59 ` [RFT PATCH 9/9] drivers: qcom: rpmh-rsc: Kill cmd_cache and find_match() with fire Douglas Anderson
2020-03-11  0:35   ` Doug Anderson
2020-03-11  9:48 ` [RFT PATCH 0/9] drivers: qcom: rpmh-rsc: Cleanup / add lots of comments Maulik Shah

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