linux-kernel - [PATCH RFT] mmc: uniphier-sd: register irqs before registering controller

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Date:   Wed, 12 Jul 2023 16:13:27 +0200
From:   Wolfram Sang <wsa+renesas@...g-engineering.com>
To:     linux-renesas-soc@...r.kernel.org
Cc:     Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        linux-mmc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH RFT] mmc: uniphier-sd: register irqs before registering controller

IRQs should be ready to serve when we call mmc_add_host() via
tmio_mmc_host_probe(). To achieve that, ensure that all irqs are masked
before registering the handlers.

Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
---

So, I converted this other TMIO core user as well. But I don't have HW
to test, so it would be great if someone could step up and test it.

 drivers/mmc/host/uniphier-sd.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/mmc/host/uniphier-sd.c b/drivers/mmc/host/uniphier-sd.c
index 61acd69fac0e..4dc079f74c1b 100644
--- a/drivers/mmc/host/uniphier-sd.c
+++ b/drivers/mmc/host/uniphier-sd.c
@@ -706,19 +706,19 @@ static int uniphier_sd_probe(struct platform_device *pdev)
 	tmio_data->max_segs = 1;
 	tmio_data->max_blk_count = U16_MAX;
 
-	ret = tmio_mmc_host_probe(host);
-	if (ret)
-		goto disable_clk;
+	sd_ctrl_write32_as_16_and_16(host, CTL_IRQ_MASK, TMIO_MASK_ALL);
 
 	ret = devm_request_irq(dev, irq, tmio_mmc_irq, IRQF_SHARED,
 			       dev_name(dev), host);
 	if (ret)
-		goto remove_host;
+		goto disable_clk;
+
+	ret = tmio_mmc_host_probe(host);
+	if (ret)
+		goto disable_clk;
 
 	return 0;
 
-remove_host:
-	tmio_mmc_host_remove(host);
 disable_clk:
 	uniphier_sd_clk_disable(host);
 free_host:
-- 
2.30.2