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| author | Robin Gong <yibin.gong@nxp.com> | 2022-02-07 04:52:06 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-08 15:24:10 +0300 |
| commit | c78d23ea7506dbf7b02c04977307331a62653380 (patch) | |
| tree | dd038bb36b7df64602c4529eda783b2fffe319a9 /drivers | |
| parent | 8cbf4ae7a2833767d63114573e5f9a45740cc975 (diff) | |
| download | linux-c78d23ea7506dbf7b02c04977307331a62653380.tar.xz | |
mailbox: imx: fix wakeup failure from freeze mode
commit 892cb524ae8a27bf5e42f711318371acd9a9f74a upstream.
Since IRQF_NO_SUSPEND used for imx mailbox driver, that means this irq
can't be used for wakeup source so that can't wakeup from freeze mode.
Add pm_system_wakeup() to wakeup from freeze mode.
Fixes: b7b2796b9b31e("mailbox: imx: ONLY IPC MU needs IRQF_NO_SUSPEND flag")
Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mailbox/imx-mailbox.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c index 2aeef0bc6930..850d4004c50e 100644 --- a/drivers/mailbox/imx-mailbox.c +++ b/drivers/mailbox/imx-mailbox.c @@ -13,6 +13,7 @@ #include <linux/module.h> #include <linux/of_device.h> #include <linux/pm_runtime.h> +#include <linux/suspend.h> #include <linux/slab.h> #define IMX_MU_CHANS 16 @@ -67,6 +68,7 @@ struct imx_mu_priv { const struct imx_mu_dcfg *dcfg; struct clk *clk; int irq; + bool suspend; u32 xcr[4]; @@ -307,6 +309,9 @@ static irqreturn_t imx_mu_isr(int irq, void *p) return IRQ_NONE; } + if (priv->suspend) + pm_system_wakeup(); + return IRQ_HANDLED; } @@ -652,6 +657,8 @@ static int __maybe_unused imx_mu_suspend_noirq(struct device *dev) priv->xcr[i] = imx_mu_read(priv, priv->dcfg->xCR[i]); } + priv->suspend = true; + return 0; } @@ -673,6 +680,8 @@ static int __maybe_unused imx_mu_resume_noirq(struct device *dev) imx_mu_write(priv, priv->xcr[i], priv->dcfg->xCR[i]); } + priv->suspend = false; + return 0; } |