linux-kernel - [PATCH] mmc: host: dw-mmc-rockchip: avoid logspam when cd-broken

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Message-Id: <20220228223642.1136229-1-pgwipeout@gmail.com>
Date:   Mon, 28 Feb 2022 17:36:42 -0500
From:   Peter Geis <pgwipeout@...il.com>
To:     Jaehoon Chung <jh80.chung@...sung.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Heiko Stuebner <heiko@...ech.de>
Cc:     Peter Geis <pgwipeout@...il.com>, linux-mmc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] mmc: host: dw-mmc-rockchip: avoid logspam when cd-broken

The dw_mmc-rockchip driver drops a large amound of logspam constantly
when the cd-broken flag is enabled.
Set the warning to be debug ratelimited in this case.

Signed-off-by: Peter Geis <pgwipeout@...il.com>
---
 drivers/mmc/host/dw_mmc-rockchip.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/dw_mmc-rockchip.c b/drivers/mmc/host/dw_mmc-rockchip.c
index 95d0ec0f5f3a..d0ebf0afa42a 100644
--- a/drivers/mmc/host/dw_mmc-rockchip.c
+++ b/drivers/mmc/host/dw_mmc-rockchip.c
@@ -50,8 +50,13 @@ static void dw_mci_rk3288_set_ios(struct dw_mci *host, struct mmc_ios *ios)
 		cclkin = ios->clock * RK3288_CLKGEN_DIV;
 
 	ret = clk_set_rate(host->ciu_clk, cclkin);
-	if (ret)
-		dev_warn(host->dev, "failed to set rate %uHz\n", ios->clock);
+	if (ret) {
+		/* this screams when card detection is broken */
+		if (host->slot->mmc->caps & MMC_CAP_NEEDS_POLL)
+			dev_dbg_ratelimited(host->dev, "failed to set rate %uHz\n", ios->clock);
+		else
+			dev_warn(host->dev, "failed to set rate %uHz\n", ios->clock);
+	}
 
 	bus_hz = clk_get_rate(host->ciu_clk) / RK3288_CLKGEN_DIV;
 	if (bus_hz != host->bus_hz) {
-- 
2.25.1