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USB core: Allocate tmpbuf using dma_alloc 

This needs to be dma save.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2012-06-20 18:23:19 +02:00
parent 95aea88175
commit 0c35d2210e
1 changed files with 18 additions and 11 deletions
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29
drivers/usb/core/usb.c
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@ -299,12 +299,14 @@ static int usb_new_device(struct usb_device *dev)
{
int addr, err;
int tmp;
unsigned char tmpbuf[USB_BUFSIZ];
void *buf;
struct usb_device_descriptor *desc;
int port = -1;
struct usb_device *parent = dev->parent;
unsigned short portstatus;
buf = dma_alloc(USB_BUFSIZ);
/* We still haven't set the Address yet */
addr = dev->devnum;
dev->devnum = 0;
@ -322,7 +324,7 @@ static int usb_new_device(struct usb_device *dev)
* the maxpacket size is 8 or 16 the device may be waiting to transmit
* some more, or keeps on retransmitting the 8 byte header. */
desc = (struct usb_device_descriptor *)tmpbuf;
desc = buf;
dev->descriptor->bMaxPacketSize0 = 64; /* Start off at 64 bytes */
/* Default to 64 byte max packet size */
dev->maxpacketsize = PACKET_SIZE_64;
@ -332,7 +334,7 @@ static int usb_new_device(struct usb_device *dev)
err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, 64);
if (err < 0) {
USB_PRINTF("%s: usb_get_descriptor() failed with %d\n", __func__, err);
return 1;
goto err_out;
}
dev->descriptor->bMaxPacketSize0 = desc->bMaxPacketSize0;
@ -349,14 +351,15 @@ static int usb_new_device(struct usb_device *dev)
}
if (port < 0) {
printf("%s: cannot locate device's port.\n", __func__);
return 1;
err = -ENODEV;
goto err_out;
}
/* reset the port for the second time */
err = hub_port_reset(dev->parent, port, &portstatus);
if (err < 0) {
printf("\n Couldn't reset port %i\n", port);
return 1;
goto err_out;
}
}
@ -383,7 +386,7 @@ static int usb_new_device(struct usb_device *dev)
if (err < 0) {
printf("\n USB device not accepting new address " \
"(error=%lX)\n", dev->status);
return 1;
goto err_out;
}
wait_ms(10); /* Let the SET_ADDRESS settle */
@ -399,7 +402,7 @@ static int usb_new_device(struct usb_device *dev)
else
printf("USB device descriptor short read " \
"(expected %i, got %i)\n", tmp, err);
return 1;
goto err_out;
}
/* correct le values */
le16_to_cpus(&dev->descriptor->bcdUSB);
@ -407,14 +410,14 @@ static int usb_new_device(struct usb_device *dev)
le16_to_cpus(&dev->descriptor->idProduct);
le16_to_cpus(&dev->descriptor->bcdDevice);
/* only support for one config for now */
usb_get_configuration_no(dev, &tmpbuf[0], 0);
usb_parse_config(dev, &tmpbuf[0], 0);
usb_get_configuration_no(dev, buf, 0);
usb_parse_config(dev, buf, 0);
usb_set_maxpacket(dev);
/* we set the default configuration here */
if (usb_set_configuration(dev, dev->config.bConfigurationValue)) {
printf("failed to set default configuration " \
"len %d, status %lX\n", dev->act_len, dev->status);
return -1;
goto err_out;
}
USB_PRINTF("new device: Mfr=%d, Product=%d, SerialNumber=%d\n",
dev->descriptor->iManufacturer, dev->descriptor->iProduct,
@ -441,7 +444,11 @@ static int usb_new_device(struct usb_device *dev)
register_device(&dev->dev);
list_add_tail(&dev->list, &usb_device_list);
return 0;
err = 0;
err_out:
dma_free(buf);
return err;
}
static struct usb_device *usb_alloc_new_device(void)