From ecb53c096d011eb146fe8daccfce9b757be1fca9 Mon Sep 17 00:00:00 2001 From: Ian Lepore Date: Thu, 23 May 2019 14:21:23 +0000 Subject: [PATCH] Release the bus-recovery gpio pins in detach(), so that unload then reload of the module works without "pin already allocated" errors. --- sys/arm/freescale/imx/imx_i2c.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/sys/arm/freescale/imx/imx_i2c.c b/sys/arm/freescale/imx/imx_i2c.c index 6f19d0be2ed..1d21f7964ac 100644 --- a/sys/arm/freescale/imx/imx_i2c.c +++ b/sys/arm/freescale/imx/imx_i2c.c @@ -469,6 +469,10 @@ i2c_detach(device_t dev) if (sc->iicbus != NULL) device_delete_child(dev, sc->iicbus); + /* Release bus-recover pins; gpio_pin_release() handles NULL args. */ + gpio_pin_release(sc->rb_sclpin); + gpio_pin_release(sc->rb_sdapin); + if (sc->res != NULL) bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->res);