From: Robin Gong yibin.gong@nxp.com
stable inclusion from stable-v5.10.110 commit a16f5ae8ade1644250a934198431f3018663e57b bugzilla: https://gitee.com/openeuler/kernel/issues/I574AL
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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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 Signed-off-by: Yu Liao liaoyu15@huawei.com Reviewed-by: Wei Li liwei391@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- drivers/mailbox/imx-mailbox.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c index 2543c7b6948b..c5663398c6b7 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_xSR_GIPn(x) BIT(28 + (3 - (x))) @@ -66,6 +67,7 @@ struct imx_mu_priv { const struct imx_mu_dcfg *dcfg; struct clk *clk; int irq; + bool suspend;
u32 xcr;
@@ -277,6 +279,9 @@ static irqreturn_t imx_mu_isr(int irq, void *p) return IRQ_NONE; }
+ if (priv->suspend) + pm_system_wakeup(); + return IRQ_HANDLED; }
@@ -326,6 +331,8 @@ static int imx_mu_startup(struct mbox_chan *chan) break; }
+ priv->suspend = true; + return 0; }
@@ -543,6 +550,8 @@ static int imx_mu_probe(struct platform_device *pdev)
clk_disable_unprepare(priv->clk);
+ priv->suspend = false; + return 0;
disable_runtime_pm: