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| author | Allen Pais <apais@linux.microsoft.com> | 2024-03-27 17:03:10 +0100 |
|---|---|---|
| committer | Jassi Brar <jassisinghbrar@gmail.com> | 2024-05-20 05:33:28 +0200 |
| commit | c9834d848da1cc92e2b298552c1a2b509e9b824c (patch) | |
| tree | 47517663efb073341deb19e534d123488bc5f91f /drivers/mailbox/imx-mailbox.c | |
| parent | mailbox: mtk-cmdq: Fix pm_runtime_get_sync() warning in mbox shutdown (diff) | |
| download | linux-c9834d848da1cc92e2b298552c1a2b509e9b824c.tar.xz linux-c9834d848da1cc92e2b298552c1a2b509e9b824c.zip | |
mailbox: Convert from tasklet to BH workqueue
The only generic interface to execute asynchronously in the BH context is
tasklet; however, it's marked deprecated and has some design flaws. To
replace tasklets, BH workqueue support was recently added. A BH workqueue
behaves similarly to regular workqueues except that the queued work items
are executed in the BH context.
Based on the work done by Tejun Heo <tj@kernel.org>
Branch: https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git for-6.10
Signed-off-by: Allen Pais <allen.lkml@gmail.com>
Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/mailbox/imx-mailbox.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c index 5c1d09cad761..933727f89431 100644 --- a/drivers/mailbox/imx-mailbox.c +++ b/drivers/mailbox/imx-mailbox.c @@ -21,6 +21,7 @@ #include <linux/pm_runtime.h> #include <linux/suspend.h> #include <linux/slab.h> +#include <linux/workqueue.h> #include "mailbox.h" @@ -80,7 +81,7 @@ struct imx_mu_con_priv { char irq_desc[IMX_MU_CHAN_NAME_SIZE]; enum imx_mu_chan_type type; struct mbox_chan *chan; - struct tasklet_struct txdb_tasklet; + struct work_struct txdb_work; }; struct imx_mu_priv { @@ -232,7 +233,7 @@ static int imx_mu_generic_tx(struct imx_mu_priv *priv, break; case IMX_MU_TYPE_TXDB: imx_mu_xcr_rmw(priv, IMX_MU_GCR, IMX_MU_xCR_GIRn(priv->dcfg->type, cp->idx), 0); - tasklet_schedule(&cp->txdb_tasklet); + queue_work(system_bh_wq, &cp->txdb_work); break; case IMX_MU_TYPE_TXDB_V2: imx_mu_xcr_rmw(priv, IMX_MU_GCR, IMX_MU_xCR_GIRn(priv->dcfg->type, cp->idx), 0); @@ -420,7 +421,7 @@ static int imx_mu_seco_tx(struct imx_mu_priv *priv, struct imx_mu_con_priv *cp, } /* Simulate hack for mbox framework */ - tasklet_schedule(&cp->txdb_tasklet); + queue_work(system_bh_wq, &cp->txdb_work); break; default: @@ -484,9 +485,9 @@ exit: return err; } -static void imx_mu_txdb_tasklet(unsigned long data) +static void imx_mu_txdb_work(struct work_struct *t) { - struct imx_mu_con_priv *cp = (struct imx_mu_con_priv *)data; + struct imx_mu_con_priv *cp = from_work(cp, t, txdb_work); mbox_chan_txdone(cp->chan, 0); } @@ -570,8 +571,7 @@ static int imx_mu_startup(struct mbox_chan *chan) if (cp->type == IMX_MU_TYPE_TXDB) { /* Tx doorbell don't have ACK support */ - tasklet_init(&cp->txdb_tasklet, imx_mu_txdb_tasklet, - (unsigned long)cp); + INIT_WORK(&cp->txdb_work, imx_mu_txdb_work); return 0; } @@ -615,7 +615,7 @@ static void imx_mu_shutdown(struct mbox_chan *chan) } if (cp->type == IMX_MU_TYPE_TXDB) { - tasklet_kill(&cp->txdb_tasklet); + cancel_work_sync(&cp->txdb_work); pm_runtime_put_sync(priv->dev); return; } |