diff options
Diffstat (limited to 'drivers/platform/chrome/cros_ec_lpc.c')
| -rw-r--r-- | drivers/platform/chrome/cros_ec_lpc.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/platform/chrome/cros_ec_lpc.c b/drivers/platform/chrome/cros_ec_lpc.c index 31c8b8c49e45..e1b75775cd4a 100644 --- a/drivers/platform/chrome/cros_ec_lpc.c +++ b/drivers/platform/chrome/cros_ec_lpc.c @@ -25,14 +25,16 @@ #include <linux/dmi.h> #include <linux/delay.h> #include <linux/io.h> +#include <linux/interrupt.h> #include <linux/mfd/cros_ec.h> #include <linux/mfd/cros_ec_commands.h> -#include <linux/mfd/cros_ec_lpc_reg.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/printk.h> #include <linux/suspend.h> +#include "cros_ec_lpc_reg.h" + #define DRV_NAME "cros_ec_lpcs" #define ACPI_DRV_NAME "GOOG0004" @@ -248,7 +250,7 @@ static int cros_ec_lpc_probe(struct platform_device *pdev) acpi_status status; struct cros_ec_device *ec_dev; u8 buf[2]; - int ret; + int irq, ret; if (!devm_request_region(dev, EC_LPC_ADDR_MEMMAP, EC_MEMMAP_SIZE, dev_name(dev))) { @@ -287,6 +289,18 @@ static int cros_ec_lpc_probe(struct platform_device *pdev) sizeof(struct ec_response_get_protocol_info); ec_dev->dout_size = sizeof(struct ec_host_request); + /* + * Some boards do not have an IRQ allotted for cros_ec_lpc, + * which makes ENXIO an expected (and safe) scenario. + */ + irq = platform_get_irq(pdev, 0); + if (irq > 0) + ec_dev->irq = irq; + else if (irq != -ENXIO) { + dev_err(dev, "couldn't retrieve IRQ number (%d)\n", irq); + return irq; + } + ret = cros_ec_register(ec_dev); if (ret) { dev_err(dev, "couldn't register ec_dev (%d)\n", ret); |