linux-kernel - [PATCH 06/10] mmc: renesas: convert tasklets to use new tasklet

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Message-Id: <20200817083508.22657-7-allen.lkml@gmail.com>
Date:   Mon, 17 Aug 2020 14:05:04 +0530
From:   Allen Pais <allen.lkml@...il.com>
To:     ludovic.desroches@...rochip.com, ulf.hansson@...aro.org,
        manuel.lauss@...il.com, mirq-linux@...e.qmqm.pl,
        jh80.chung@...sung.com, oakad@...oo.com,
        yamada.masahiro@...ionext.com, brucechang@....com.tw,
        HaraldWelte@...tech.com
Cc:     keescook@...omium.org, inux-mmc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-omap@...r.kernel.org, Allen Pais <allen.lkml@...il.com>,
        Romain Perier <romain.perier@...il.com>
Subject: [PATCH 06/10] mmc: renesas: convert tasklets to use new tasklet_setup() API

In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly.

Signed-off-by: Romain Perier <romain.perier@...il.com>
Signed-off-by: Allen Pais <allen.lkml@...il.com>
---
 drivers/mmc/host/renesas_sdhi.h               |  1 +
 drivers/mmc/host/renesas_sdhi_core.c          |  2 ++
 drivers/mmc/host/renesas_sdhi_internal_dmac.c | 20 +++++++++----------
 drivers/mmc/host/renesas_sdhi_sys_dmac.c      |  9 ++++-----
 4 files changed, 17 insertions(+), 15 deletions(-)

diff --git a/drivers/mmc/host/renesas_sdhi.h b/drivers/mmc/host/renesas_sdhi.h
index 14c64caefc64..79a86bccc0ec 100644
--- a/drivers/mmc/host/renesas_sdhi.h
+++ b/drivers/mmc/host/renesas_sdhi.h
@@ -48,6 +48,7 @@ struct tmio_mmc_dma {
 };
 
 struct renesas_sdhi {
+	struct platform_device *pdev;
 	struct clk *clk;
 	struct clk *clk_cd;
 	struct tmio_mmc_data mmc_data;
diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c
index 15e21894bd44..4a9319743eb6 100644
--- a/drivers/mmc/host/renesas_sdhi_core.c
+++ b/drivers/mmc/host/renesas_sdhi_core.c
@@ -975,6 +975,8 @@ int renesas_sdhi_probe(struct platform_device *pdev,
 			goto eirq;
 	}
 
+	priv->pdev = pdev;
+
 	dev_info(&pdev->dev, "%s base at %pa, max clock rate %u MHz\n",
 		 mmc_hostname(host->mmc), &res->start, host->mmc->f_max / 1000000);
 
diff --git a/drivers/mmc/host/renesas_sdhi_internal_dmac.c b/drivers/mmc/host/renesas_sdhi_internal_dmac.c
index 32ab991544ef..3d8866581043 100644
--- a/drivers/mmc/host/renesas_sdhi_internal_dmac.c
+++ b/drivers/mmc/host/renesas_sdhi_internal_dmac.c
@@ -218,9 +218,9 @@ renesas_sdhi_internal_dmac_start_dma(struct tmio_mmc_host *host,
 	renesas_sdhi_internal_dmac_enable_dma(host, false);
 }
 
-static void renesas_sdhi_internal_dmac_issue_tasklet_fn(unsigned long arg)
+static void renesas_sdhi_internal_dmac_issue_tasklet_fn(struct tasklet_struct *t)
 {
-	struct tmio_mmc_host *host = (struct tmio_mmc_host *)arg;
+	struct tmio_mmc_host *host = from_tasklet(host, t, dma_issue);
 
 	tmio_mmc_enable_mmc_irqs(host, TMIO_STAT_DATAEND);
 
@@ -255,9 +255,11 @@ static bool renesas_sdhi_internal_dmac_complete(struct tmio_mmc_host *host)
 	return true;
 }
 
-static void renesas_sdhi_internal_dmac_complete_tasklet_fn(unsigned long arg)
+static void renesas_sdhi_internal_dmac_complete_tasklet_fn(struct tasklet_struct *t)
 {
-	struct tmio_mmc_host *host = (struct tmio_mmc_host *)arg;
+	struct renesas_sdhi *priv = from_tasklet(priv, t,
+						 dma_priv.dma_complete);
+	struct tmio_mmc_host *host = platform_get_drvdata(priv->pdev);
 
 	spin_lock_irq(&host->lock);
 	if (!renesas_sdhi_internal_dmac_complete(host))
@@ -289,12 +291,10 @@ renesas_sdhi_internal_dmac_request_dma(struct tmio_mmc_host *host,
 	/* Each value is set to non-zero to assume "enabling" each DMA */
 	host->chan_rx = host->chan_tx = (void *)0xdeadbeaf;
 
-	tasklet_init(&priv->dma_priv.dma_complete,
-		     renesas_sdhi_internal_dmac_complete_tasklet_fn,
-		     (unsigned long)host);
-	tasklet_init(&host->dma_issue,
-		     renesas_sdhi_internal_dmac_issue_tasklet_fn,
-		     (unsigned long)host);
+	tasklet_setup(&priv->dma_priv.dma_complete,
+		     renesas_sdhi_internal_dmac_complete_tasklet_fn);
+	tasklet_setup(&host->dma_issue,
+		     renesas_sdhi_internal_dmac_issue_tasklet_fn);
 }
 
 static void
diff --git a/drivers/mmc/host/renesas_sdhi_sys_dmac.c b/drivers/mmc/host/renesas_sdhi_sys_dmac.c
index 13ff023fbee9..cd638e638db6 100644
--- a/drivers/mmc/host/renesas_sdhi_sys_dmac.c
+++ b/drivers/mmc/host/renesas_sdhi_sys_dmac.c
@@ -310,9 +310,9 @@ static void renesas_sdhi_sys_dmac_start_dma(struct tmio_mmc_host *host,
 	}
 }
 
-static void renesas_sdhi_sys_dmac_issue_tasklet_fn(unsigned long priv)
+static void renesas_sdhi_sys_dmac_issue_tasklet_fn(struct tasklet_struct *t)
 {
-	struct tmio_mmc_host *host = (struct tmio_mmc_host *)priv;
+	struct tmio_mmc_host *host = from_tasklet(host, t, dma_issue);
 	struct dma_chan *chan = NULL;
 
 	spin_lock_irq(&host->lock);
@@ -399,9 +399,8 @@ static void renesas_sdhi_sys_dmac_request_dma(struct tmio_mmc_host *host,
 			goto ebouncebuf;
 
 		init_completion(&priv->dma_priv.dma_dataend);
-		tasklet_init(&host->dma_issue,
-			     renesas_sdhi_sys_dmac_issue_tasklet_fn,
-			     (unsigned long)host);
+		tasklet_setup(&host->dma_issue,
+			     renesas_sdhi_sys_dmac_issue_tasklet_fn);
 	}
 
 	renesas_sdhi_sys_dmac_enable_dma(host, true);
-- 
2.17.1