summaryrefslogtreecommitdiff
path: root/common/usb.c
diff options
context:
space:
mode:
Diffstat (limited to 'common/usb.c')
-rw-r--r--common/usb.c56
1 files changed, 28 insertions, 28 deletions
diff --git a/common/usb.c b/common/usb.c
index db65d7db34..7ab5df670b 100644
--- a/common/usb.c
+++ b/common/usb.c
@@ -196,15 +196,16 @@ int usb_control_msg(struct usb_device *dev, unsigned int pipe,
if (timeout == 0)
return (int)size;
- while (timeout--) {
- if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
- break;
- wait_ms(1);
- }
- if (dev->status == 0)
- return dev->act_len;
- else
+ if (dev->status != 0) {
+ /*
+ * Let's wait a while for the timeout to elapse.
+ * It has no real use, but it keeps the interface happy.
+ */
+ wait_ms(timeout);
return -1;
+ }
+
+ return dev->act_len;
}
/*-------------------------------------------------------------------
@@ -442,14 +443,14 @@ int usb_get_configuration_no(struct usb_device *dev,
config = (struct usb_config_descriptor *)&buffer[0];
- result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 8);
- if (result < 8) {
+ result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 9);
+ if (result < 9) {
if (result < 0)
printf("unable to get descriptor, error %lX\n",
dev->status);
else
printf("config descriptor too short " \
- "(expected %i, got %i)\n", 8, result);
+ "(expected %i, got %i)\n", 9, result);
return -1;
}
tmp = le16_to_cpu(config->wTotalLength);
@@ -777,7 +778,7 @@ int usb_new_device(struct usb_device *dev)
* Several USB stick devices report ERR: CTL_TIMEOUT, caused by an
* invalid header while reading 8 bytes as device descriptor. */
dev->descriptor.bMaxPacketSize0 = 8; /* Start off at 8 bytes */
- dev->maxpacketsize = 0; /* Default to 8 byte max packet size */
+ dev->maxpacketsize = PACKET_SIZE_8;
dev->epmaxpacketin [0] = 8;
dev->epmaxpacketout[0] = 8;
@@ -788,15 +789,12 @@ int usb_new_device(struct usb_device *dev)
return 1;
}
#else
- /* this is a Windows scheme of initialization sequence, with double
- * reset of the device (Linux uses the same sequence, but without double
- * reset. This double reset is not considered harmful and matches the
- * Windows behaviour)
+ /* This is a Windows scheme of initialization sequence, with double
+ * reset of the device (Linux uses the same sequence)
* Some equipment is said to work only with such init sequence; this
* patch is based on the work by Alan Stern:
* http://sourceforge.net/mailarchive/forum.php?thread_id=5729457&forum_id=5398
*/
- int j;
struct usb_device_descriptor *desc;
int port = -1;
struct usb_device *parent = dev->parent;
@@ -809,20 +807,22 @@ int usb_new_device(struct usb_device *dev)
desc = (struct usb_device_descriptor *)tmpbuf;
dev->descriptor.bMaxPacketSize0 = 64; /* Start off at 64 bytes */
- dev->maxpacketsize = 64; /* Default to 64 byte max packet size */
+ /* Default to 64 byte max packet size */
+ dev->maxpacketsize = PACKET_SIZE_64;
dev->epmaxpacketin [0] = 64;
dev->epmaxpacketout[0] = 64;
- for (j = 0; j < 3; ++j) {
- err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, 64);
- if (err < 0) {
- USB_PRINTF("usb_new_device: 64 byte descr\n");
- break;
- }
+
+ err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, 64);
+ if (err < 0) {
+ USB_PRINTF("usb_new_device: usb_get_descriptor() failed\n");
+ return 1;
}
+
dev->descriptor.bMaxPacketSize0 = desc->bMaxPacketSize0;
/* find the port number we're at */
if (parent) {
+ int j;
for (j = 0; j < parent->maxchild; j++) {
if (parent->children[j] == dev) {
@@ -847,10 +847,10 @@ int usb_new_device(struct usb_device *dev)
dev->epmaxpacketin [0] = dev->descriptor.bMaxPacketSize0;
dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0;
switch (dev->descriptor.bMaxPacketSize0) {
- case 8: dev->maxpacketsize = 0; break;
- case 16: dev->maxpacketsize = 1; break;
- case 32: dev->maxpacketsize = 2; break;
- case 64: dev->maxpacketsize = 3; break;
+ case 8: dev->maxpacketsize = PACKET_SIZE_8; break;
+ case 16: dev->maxpacketsize = PACKET_SIZE_16; break;
+ case 32: dev->maxpacketsize = PACKET_SIZE_32; break;
+ case 64: dev->maxpacketsize = PACKET_SIZE_64; break;
}
dev->devnum = addr;