snd-usb-fire currently fails its firmware load with "transfer buffer not dma capable". Move said buffer off of the stack.
Signed-off-by: René Herman rene.herman@gmail.com --- firmware.c | 95 ++++++++++++++++++++++++++---------------------------- 1 file changed, 46 insertions(+), 49 deletions(-)
diff --git a/firmware.c b/firmware.c index 69137c1..502653a 100644 --- a/firmware.c +++ b/firmware.c @@ -355,63 +355,60 @@ static int usb6fire_fw_check(struct usb_interface *intf, const u8 *version)
int usb6fire_fw_init(struct usb_interface *intf) { - int i; - int ret; struct usb_device *device = interface_to_usbdev(intf); + int ret, i; + /* buffer: 8 receiving bytes from device and * sizeof(EP_W_MAX_PACKET_SIZE) bytes for non-const copy */ - u8 buffer[12]; + u8 *buffer = kmalloc(12, GFP_KERNEL); + + if (!buffer) + return -ENOMEM;
ret = usb6fire_fw_ezusb_read(device, 1, 0, buffer, 8); if (ret < 0) { dev_err(&intf->dev, "unable to receive device firmware state.\n"); - return ret; - } - if (buffer[0] != 0xeb || buffer[1] != 0xaa || buffer[2] != 0x55) { - dev_err(&intf->dev, - "unknown device firmware state received from device:"); - for (i = 0; i < 8; i++) - printk(KERN_CONT "%02x ", buffer[i]); - printk(KERN_CONT "\n"); - return -EIO; - } - /* do we need fpga loader ezusb firmware? */ - if (buffer[3] == 0x01) { - ret = usb6fire_fw_ezusb_upload(intf, - "6fire/dmx6firel2.ihx", 0, NULL, 0); - if (ret < 0) - return ret; - return FW_NOT_READY; + goto out; } - /* do we need fpga firmware and application ezusb firmware? */ - else if (buffer[3] == 0x02) { - ret = usb6fire_fw_check(intf, buffer + 4); - if (ret < 0) - return ret; - ret = usb6fire_fw_fpga_upload(intf, "6fire/dmx6firecf.bin"); - if (ret < 0) - return ret; - memcpy(buffer, ep_w_max_packet_size, - sizeof(ep_w_max_packet_size)); - ret = usb6fire_fw_ezusb_upload(intf, "6fire/dmx6fireap.ihx", - 0x0003, buffer, sizeof(ep_w_max_packet_size)); - if (ret < 0) - return ret; - return FW_NOT_READY; - } - /* all fw loaded? */ - else if (buffer[3] == 0x03) - return usb6fire_fw_check(intf, buffer + 4); - /* unknown data? */ - else { - dev_err(&intf->dev, - "unknown device firmware state received from device: "); - for (i = 0; i < 8; i++) - printk(KERN_CONT "%02x ", buffer[i]); - printk(KERN_CONT "\n"); - return -EIO; + if (buffer[0] == 0xeb && buffer[1] == 0xaa && buffer[2] == 0x55) { + /* do we need fpga loader ezusb firmware? */ + if (buffer[3] == 1) { + ret = usb6fire_fw_ezusb_upload(intf, + "6fire/dmx6firel2.ihx", 0, NULL, 0); + if (ret >= 0) + ret = FW_NOT_READY; + goto out; + } + /* do we need fpga firmware and application ezusb firmware? */ + if (buffer[3] == 2) { + ret = usb6fire_fw_check(intf, buffer + 4); + if (ret < 0) + goto out; + ret = usb6fire_fw_fpga_upload(intf, "6fire/dmx6firecf.bin"); + if (ret < 0) + goto out; + memcpy(buffer, ep_w_max_packet_size, + sizeof(ep_w_max_packet_size)); + ret = usb6fire_fw_ezusb_upload(intf, "6fire/dmx6fireap.ihx", + 0x0003, buffer, sizeof(ep_w_max_packet_size)); + if (ret >= 0) + ret = FW_NOT_READY; + goto out; + } + /* all fw loaded? */ + if (buffer[3] == 3) { + ret = usb6fire_fw_check(intf, buffer + 4); + goto out; + } } - return 0; + dev_err(&intf->dev, + "unknown device firmware state received from device: "); + for (i = 0; i < 8; i++) + printk(KERN_CONT "%02x ", buffer[i]); + printk(KERN_CONT "\n"); + ret = -EIO; + +out: kfree(buffer); + return ret; } -