From b48592e496e55e4e3e6e7f27d5ba3a229a1db7a6 Mon Sep 17 00:00:00 2001 From: Jarod Wilson Date: Sat, 3 Jul 2010 22:42:14 -0300 Subject: [PATCH] V4L/DVB: IR/mceusb: unify and simplify different gen device init Started out as an effort to try to tackle the last remaining issue I'm having with this damned pinnacle device getting wedged the first time its plugged in after an indeterminate length of not being plugged in. Didn't get that solved yet, but did streamline the init code a bit more and remove some superfluous gunk. Nukes a completely unneeded call to usb_device_init() and several lines of overly complex crap in the gen1 device init path. Signed-off-by: Jarod Wilson Signed-off-by: Mauro Carvalho Chehab --- drivers/media/IR/mceusb.c | 50 ++++++--------------------------------- 1 file changed, 7 insertions(+), 43 deletions(-) diff --git a/drivers/media/IR/mceusb.c b/drivers/media/IR/mceusb.c index cc8e2ef28b66..3c056a8fba7f 100644 --- a/drivers/media/IR/mceusb.c +++ b/drivers/media/IR/mceusb.c @@ -768,47 +768,18 @@ static void mceusb_gen1_init(struct mceusb_dev *ir) int i, ret; int partial = 0; struct device *dev = ir->dev; - char *junk, *data; - - junk = kmalloc(2 * USB_BUFLEN, GFP_KERNEL); - if (!junk) { - dev_err(dev, "%s: memory allocation failed!\n", __func__); - return; - } + char *data; data = kzalloc(USB_CTRL_MSG_SZ, GFP_KERNEL); if (!data) { dev_err(dev, "%s: memory allocation failed!\n", __func__); - kfree(junk); return; } /* - * Clear off the first few messages. These look like calibration - * or test data, I can't really tell. This also flushes in case - * we have random ir data queued up. - */ - for (i = 0; i < MCE_G1_INIT_MSGS; i++) - usb_bulk_msg(ir->usbdev, - usb_rcvbulkpipe(ir->usbdev, - ir->usb_ep_in->bEndpointAddress), - junk, sizeof(junk), &partial, HZ * 10); - - /* Get Status */ - ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0), - USB_REQ_GET_STATUS, USB_DIR_IN, - 0, 0, data, USB_CTRL_MSG_SZ, HZ * 3); - - /* ret = usb_get_status( ir->usbdev, 0, 0, data ); */ - dev_dbg(dev, "%s - ret = %d status = 0x%x 0x%x\n", __func__, - ret, data[0], data[1]); - - /* - * This is a strange one. They issue a set address to the device + * This is a strange one. Windows issues a set address to the device * on the receive control pipe and expect a certain value pair back */ - memset(data, 0, sizeof(data)); - ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0), USB_REQ_SET_ADDRESS, USB_TYPE_VENDOR, 0, 0, data, USB_CTRL_MSG_SZ, HZ * 3); @@ -836,19 +807,12 @@ static void mceusb_gen1_init(struct mceusb_dev *ir) dev_dbg(dev, "%s - retC = %d\n", __func__, ret); kfree(data); - kfree(junk); }; static void mceusb_gen2_init(struct mceusb_dev *ir) { int maxp = ir->len_in; - mce_sync_in(ir, NULL, maxp); - mce_sync_in(ir, NULL, maxp); - - set_current_state(TASK_INTERRUPTIBLE); - schedule_timeout(msecs_to_jiffies(100)); - /* device reset */ mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET)); mce_sync_in(ir, NULL, maxp); @@ -866,8 +830,6 @@ static void mceusb_gen3_init(struct mceusb_dev *ir) { int maxp = ir->len_in; - mce_sync_in(ir, NULL, maxp); - /* device reset */ mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET)); mce_sync_in(ir, NULL, maxp); @@ -974,8 +936,6 @@ static int __devinit mceusb_dev_probe(struct usb_interface *intf, dev_dbg(&intf->dev, ": %s called\n", __func__); - usb_reset_device(dev); - config = dev->actconfig; idesc = intf->cur_altsetting; @@ -1062,7 +1022,11 @@ static int __devinit mceusb_dev_probe(struct usb_interface *intf, if (!ir->idev) goto input_dev_fail; - /* inbound data */ + /* flush buffers on the device */ + mce_sync_in(ir, NULL, maxp); + mce_sync_in(ir, NULL, maxp); + + /* wire up inbound data handler */ usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in, maxp, (usb_complete_t) mceusb_dev_recv, ir, ep_in->bInterval); ir->urb_in->transfer_dma = ir->dma_in; -- 2.30.2