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platform_system_core
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Code Issues Projects Releases Wiki Activity

Improve logging of USBDEVFS_CLAIMINTERFACE failures. 

Bug: https://code.google.com/p/android/issues/detail?id=170054
Change-Id: I9b11eb019093e3322da0a8e70d6e17de4c25ab75
This commit is contained in:
Elliott Hughes 2015-04-25 14:44:23 -07:00
parent 8929c77ab9
commit ce6363bbbc
1 changed files with 20 additions and 24 deletions
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44
adb/usb_linux.cpp
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@ -114,10 +114,6 @@ static void kick_disconnected_devices()
}
static void register_device(const char *dev_name, const char *devpath,
unsigned char ep_in, unsigned char ep_out,
int ifc, int serial_index, unsigned zero_mask);
static inline int badname(const char *name)
{
while(*name) {
@ -587,8 +583,7 @@ static void register_device(const char *dev_name, const char *devpath,
** name, we have no further work to do.
*/
adb_mutex_lock(&usb_lock);
for (usb_handle* usb = handle_list.next; usb != &handle_list;
usb = usb->next) {
for (usb_handle* usb = handle_list.next; usb != &handle_list; usb = usb->next) {
if (!strcmp(usb->fname, dev_name)) {
adb_mutex_unlock(&usb_lock);
return;
@ -596,8 +591,7 @@ static void register_device(const char *dev_name, const char *devpath,
}
adb_mutex_unlock(&usb_lock);
D("[ usb located new device %s (%d/%d/%d) ]\n",
dev_name, ep_in, ep_out, interface);
D("[ usb located new device %s (%d/%d/%d) ]\n", dev_name, ep_in, ep_out, interface);
usb_handle* usb = reinterpret_cast<usb_handle*>(calloc(1, sizeof(usb_handle)));
if (usb == nullptr) fatal("couldn't allocate usb_handle");
strcpy(usb->fname, dev_name);
@ -613,16 +607,27 @@ static void register_device(const char *dev_name, const char *devpath,
usb->reaper_thread = 0;
usb->desc = unix_open(usb->fname, O_RDWR | O_CLOEXEC);
if(usb->desc < 0) {
/* if we fail, see if have read-only access */
if (usb->desc == -1) {
// Opening RW failed, so see if we have RO access.
usb->desc = unix_open(usb->fname, O_RDONLY | O_CLOEXEC);
if(usb->desc < 0) goto fail;
if (usb->desc == -1) {
D("[ usb open %s failed: %s]\n", usb->fname, strerror(errno));
free(usb);
return;
}
usb->writeable = 0;
D("[ usb open read-only %s fd = %d]\n", usb->fname, usb->desc);
} else {
D("[ usb open %s fd = %d]\n", usb->fname, usb->desc);
}
D("[ usb opened %s%s, fd=%d]\n", usb->fname, (usb->writeable ? "" : " (read-only)"), usb->desc);
if (usb->writeable) {
n = ioctl(usb->desc, USBDEVFS_CLAIMINTERFACE, &interface);
if(n != 0) goto fail;
if (n != 0) {
D("[ usb ioctl(%d, USBDEVFS_CLAIMINTERFACE) failed: %s]\n", usb->desc, strerror(errno));
adb_close(usb->desc);
free(usb);
return;
}
}
/* read the device's serial number */
@ -685,15 +690,6 @@ static void register_device(const char *dev_name, const char *devpath,
adb_mutex_unlock(&usb_lock);
register_usb_transport(usb, serial, devpath, usb->writeable);
return;
fail:
D("[ usb open %s error=%d, err_str = %s]\n",
usb->fname, errno, strerror(errno));
if(usb->desc >= 0) {
adb_close(usb->desc);
}
free(usb);
}
void* device_poll_thread(void* unused)