d)usb_stor_Bulk_transport传输函数最终会调用usb_stor_bulk_transfer_sglist函数来传输,它实现的是SG算法。 e)usb_stor_bulk_transfer_sglist函数首先调用usb_sg_init初始化,然后调用usb_sg_wait发通urb包并同步等待结果。 且调用wait_for_completion(&io->complete);进入等待状态。 f)底层驱动以中断方式通知写...
[827968.923077] [] (usb_sg_wait) from [] (usb_stor_bulk_transfer_sglist.part.2+0x80/0xdc) [827968.923097] r9:00001000 r8:c269ad64 r7:00001000 r6:c0008280 r5:c269adcc r4:c269ad40 [827968.923119] [] (usb_stor_bulk_transfer_sglist.part.2) from [] (usb_stor_bulk_srb+0x58/0x84) ...
SG模块只能工作,当它由SA的连接和控制通过USB电缆。 翻译结果2复制译文编辑译文朗读译文返回顶部 SG 模块在它在连接时只能工作和控制通过至 USB 电缆的 SA。 翻译结果3复制译文编辑译文朗读译文返回顶部 SG 模块只能工作时连接和控制,通过 USB 电缆的 SA。 翻译结果4复制译文编辑译文朗读译文返回顶部 sg模块时才可以...
Causes the current thread to wait until it is awakened, typically by being notified or interrupted. (Inherited from Object) Wait(Int64) Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed....
errors; /* the last request tanked */ bool ongoing_read; /* a read is going on */ spinlock_t err_lock; /* lock for errors */ struct kref kref; struct mutex io_mutex; /* synchronize I/O with disconnect */ wait_queue_head_t bulk_in_wait; /* to wait for an ongoing read */...
lcall syncdelaywr; wait for the rec to sync lcall syncdelaywr; wait for the rec to sync epempty: epempty: mova,IOA; conversion running? jbACC.7,sofend lcall DAsend sofend: ;; clear INT2 mova,EXIF; FIRST clear the USB (INT2) interrupt request ...
(usb_alloc_urb、usb_fill_control_urb、usb_start_wait_urb)这三个函数调用,完了以后,调用usb_hcd_submit_urb将urb发送到HCD,HCD 每收到urb,就会将它添加到这个 urb指定的urb_list中,形成链表,现在进入了HCD模块(略),处理完以后,会返回一个状态,最后usb_api_blocking_completion会去处理这次urb的收尾工作,...
我们在DM8148和DM8168平台上均发现一个问题,就是刚插入USB后过2-3s拔掉,会概率性的出现要经过20秒左右USB才会真正确认被拔出,这个期间插入USB也没有反应,该问题确认和U盘本身没有关系。log如下面所示。经过我们的调试,在tranport.c文件中的函数usb_stor_msg_common中有wait_for_completion_interruptible_timeout 进...
* while it was binding. That would usually be done in order to wait for * some userspace participation. */intusb_composite_probe(struct usb_composite_driver *driver)/** * usb_composite_unregister() - unregister a composite driver *@driver: the driver to unregister ...
8. Wait until the light goes out, indicating that the BIOS updating process is completed.Q&A: Q1: Which motherboards support Flashback function? Query the Flashback position. A1: You can check the official website product specifications or user manual instructions....