From: Fabien Dessenne fabien.dessenne@st.com
[ Upstream commit 68a1c8485cf83734d4da9d81cd3b5d2ae7c0339b ]
On failure of_irq_get() returns a negative value or zero, which is not handled as an error in the existing implementation. Instead of using this API, use platform_get_irq() that returns exclusively a negative value on failure. Also, do not output an error log in case of defer probe error.
Signed-off-by: Fabien Dessenne fabien.dessenne@st.com Signed-off-by: Jassi Brar jaswinder.singh@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/mailbox/stm32-ipcc.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/drivers/mailbox/stm32-ipcc.c b/drivers/mailbox/stm32-ipcc.c index 533b0da5235d4..ca1f993c0de30 100644 --- a/drivers/mailbox/stm32-ipcc.c +++ b/drivers/mailbox/stm32-ipcc.c @@ -8,9 +8,9 @@ #include <linux/bitfield.h> #include <linux/clk.h> #include <linux/interrupt.h> +#include <linux/io.h> #include <linux/mailbox_controller.h> #include <linux/module.h> -#include <linux/of_irq.h> #include <linux/platform_device.h> #include <linux/pm_wakeirq.h>
@@ -240,9 +240,11 @@ static int stm32_ipcc_probe(struct platform_device *pdev)
/* irq */ for (i = 0; i < IPCC_IRQ_NUM; i++) { - ipcc->irqs[i] = of_irq_get_byname(dev->of_node, irq_name[i]); + ipcc->irqs[i] = platform_get_irq_byname(pdev, irq_name[i]); if (ipcc->irqs[i] < 0) { - dev_err(dev, "no IRQ specified %s\n", irq_name[i]); + if (ipcc->irqs[i] != -EPROBE_DEFER) + dev_err(dev, "no IRQ specified %s\n", + irq_name[i]); ret = ipcc->irqs[i]; goto err_clk; } @@ -263,9 +265,10 @@ static int stm32_ipcc_probe(struct platform_device *pdev)
/* wakeup */ if (of_property_read_bool(np, "wakeup-source")) { - ipcc->wkp = of_irq_get_byname(dev->of_node, "wakeup"); + ipcc->wkp = platform_get_irq_byname(pdev, "wakeup"); if (ipcc->wkp < 0) { - dev_err(dev, "could not get wakeup IRQ\n"); + if (ipcc->wkp != -EPROBE_DEFER) + dev_err(dev, "could not get wakeup IRQ\n"); ret = ipcc->wkp; goto err_clk; }