The tasklet is an old API that should be deprecated, usually can be converted to another decent API. In ASoC FSL ESAI CPU DAI driver, a tasklet is still used for offloading the hardware reset function. It can be achieved gracefully with a work queued, too.
This patch replaces the tasklet usage in fsl esai driver with a simple work. The conversion is fairly straightforward.
Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/soc/fsl/fsl_esai.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/sound/soc/fsl/fsl_esai.c b/sound/soc/fsl/fsl_esai.c index 79b861afd986..39637ca78cdb 100644 --- a/sound/soc/fsl/fsl_esai.c +++ b/sound/soc/fsl/fsl_esai.c @@ -41,7 +41,7 @@ struct fsl_esai_soc_data { * @extalclk: esai clock source to derive HCK, SCK and FS * @fsysclk: system clock source to derive HCK, SCK and FS * @spbaclk: SPBA clock (optional, depending on SoC design) - * @task: tasklet to handle the reset operation + * @work: work to handle the reset operation * @soc: soc specific data * @lock: spin lock between hw_reset() and trigger() * @fifo_depth: depth of tx/rx FIFO @@ -67,7 +67,7 @@ struct fsl_esai { struct clk *extalclk; struct clk *fsysclk; struct clk *spbaclk; - struct tasklet_struct task; + struct work_struct work; const struct fsl_esai_soc_data *soc; spinlock_t lock; /* Protect hw_reset and trigger */ u32 fifo_depth; @@ -117,7 +117,7 @@ static irqreturn_t esai_isr(int irq, void *devid) ESAI_xCR_xEIE_MASK, 0); regmap_update_bits(esai_priv->regmap, REG_ESAI_RCR, ESAI_xCR_xEIE_MASK, 0); - tasklet_schedule(&esai_priv->task); + schedule_work(&esai_priv->work); }
if (esr & ESAI_ESR_TINIT_MASK) @@ -708,9 +708,9 @@ static void fsl_esai_trigger_stop(struct fsl_esai *esai_priv, bool tx) ESAI_xFCR_xFR, 0); }
-static void fsl_esai_hw_reset(struct tasklet_struct *t) +static void fsl_esai_hw_reset(struct work_struct *work) { - struct fsl_esai *esai_priv = from_tasklet(esai_priv, t, task); + struct fsl_esai *esai_priv = container_of(work, struct fsl_esai, work); bool tx = true, rx = false, enabled[2]; unsigned long lock_flags; u32 tfcr, rfcr; @@ -1070,7 +1070,7 @@ static int fsl_esai_probe(struct platform_device *pdev) return ret; }
- tasklet_setup(&esai_priv->task, fsl_esai_hw_reset); + INIT_WORK(&esai_priv->work, fsl_esai_hw_reset);
pm_runtime_enable(&pdev->dev);
@@ -1088,7 +1088,7 @@ static int fsl_esai_remove(struct platform_device *pdev) struct fsl_esai *esai_priv = platform_get_drvdata(pdev);
pm_runtime_disable(&pdev->dev); - tasklet_kill(&esai_priv->task); + cancel_work_sync(&esai_priv->work);
return 0; }