From: Robin Gong yibin.gong@nxp.com
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 --- drivers/mailbox/imx-mailbox.c | 9 +++++++++ 1 file changed, 9 insertions(+)
--- a/drivers/mailbox/imx-mailbox.c +++ b/drivers/mailbox/imx-mailbox.c @@ -14,6 +14,7 @@ #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 @@ -76,6 +77,7 @@ struct imx_mu_priv { const struct imx_mu_dcfg *dcfg; struct clk *clk; int irq; + bool suspend;
u32 xcr[4];
@@ -334,6 +336,9 @@ static irqreturn_t imx_mu_isr(int irq, v return IRQ_NONE; }
+ if (priv->suspend) + pm_system_wakeup(); + return IRQ_HANDLED; }
@@ -702,6 +707,8 @@ static int __maybe_unused imx_mu_suspend priv->xcr[i] = imx_mu_read(priv, priv->dcfg->xCR[i]); }
+ priv->suspend = true; + return 0; }
@@ -723,6 +730,8 @@ static int __maybe_unused imx_mu_resume_ imx_mu_write(priv, priv->xcr[i], priv->dcfg->xCR[i]); }
+ priv->suspend = false; + return 0; }