From d635711daa98be86d4c7fd01499c34f566b54ccb Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Fri, 10 Jun 2016 05:30:17 -0300 Subject: Linux-libre 4.6.2-gnu --- drivers/acpi/ec_sys.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/acpi/ec_sys.c') diff --git a/drivers/acpi/ec_sys.c b/drivers/acpi/ec_sys.c index bea8e425a..6c7dd7af7 100644 --- a/drivers/acpi/ec_sys.c +++ b/drivers/acpi/ec_sys.c @@ -73,6 +73,9 @@ static ssize_t acpi_ec_write_io(struct file *f, const char __user *buf, loff_t init_off = *off; int err = 0; + if (!write_support) + return -EINVAL; + if (*off >= EC_SPACE_SIZE) return 0; if (*off + count >= EC_SPACE_SIZE) { -- cgit v1.2.3-54-g00ecf