diff options
| -rw-r--r-- | drivers/char/sonypi.c | 27 | ||||
| -rw-r--r-- | drivers/misc/sony-laptop.c | 4 |
2 files changed, 29 insertions, 2 deletions
diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c index 72cdddb0ee6f..b6998906b214 100644 --- a/drivers/char/sonypi.c +++ b/drivers/char/sonypi.c @@ -97,6 +97,11 @@ module_param(useinput, int, 0444); MODULE_PARM_DESC(useinput, "set this if you would like sonypi to feed events to the input subsystem"); +static int check_ioport = 1; +module_param(check_ioport, int, 0444); +MODULE_PARM_DESC(check_ioport, + "set this to 0 if you think the automatic ioport check for sony-laptop is wrong"); + #define SONYPI_DEVICE_MODEL_TYPE1 1 #define SONYPI_DEVICE_MODEL_TYPE2 2 #define SONYPI_DEVICE_MODEL_TYPE3 3 @@ -1262,6 +1267,28 @@ static int __devinit sonypi_create_input_devices(void) static int __devinit sonypi_setup_ioports(struct sonypi_device *dev, const struct sonypi_ioport_list *ioport_list) { + /* try to detect if sony-laptop is being used and thus + * has already requested one of the known ioports. + * As in the deprecated check_region this is racy has we have + * multiple ioports available and one of them can be requested + * between this check and the subsequent request. Anyway, as an + * attempt to be some more user-friendly as we currently are, + * this is enough. + */ + const struct sonypi_ioport_list *check = ioport_list; + while (check_ioport && check->port1) { + if (!request_region(check->port1, + sonypi_device.region_size, + "Sony Programable I/O Device Check")) { + printk(KERN_ERR "sonypi: ioport 0x%.4x busy, using sony-laptop? " + "if not use check_ioport=0\n", + check->port1); + return -EBUSY; + } + release_region(check->port1, sonypi_device.region_size); + check++; + } + while (ioport_list->port1) { if (request_region(ioport_list->port1, diff --git a/drivers/misc/sony-laptop.c b/drivers/misc/sony-laptop.c index 141284dee1a1..2787e1ce8911 100644 --- a/drivers/misc/sony-laptop.c +++ b/drivers/misc/sony-laptop.c @@ -1801,7 +1801,7 @@ sony_pic_read_possible_resource(struct acpi_resource *resource, void *context) if (!interrupt) return AE_ERROR; - list_add(&interrupt->list, &dev->interrupts); + list_add_tail(&interrupt->list, &dev->interrupts); interrupt->irq.triggering = p->triggering; interrupt->irq.polarity = p->polarity; interrupt->irq.sharable = p->sharable; @@ -1823,7 +1823,7 @@ sony_pic_read_possible_resource(struct acpi_resource *resource, void *context) if (!ioport) return AE_ERROR; - list_add(&ioport->list, &dev->ioports); + list_add_tail(&ioport->list, &dev->ioports); memcpy(&ioport->io, io, sizeof(*io)); return AE_OK; } |
