[PATCH] usb: hcd: initialize hcd->flags to 0 when rm hcd

2017-01-12 Thread William Wu
From: William wu On some platforms(e.g. rk3399 board), we can call hcd_add/remove consecutively without calling usb_put_hcd/usb_create_hcd in between, so hcd->flags can be stale. If the HC dies due to whatever reason then without this patch we get the below error on next hcd_add. [173.296154] x

Re: [PATCH] usb: hcd: initialize hcd->flags to 0 when rm hcd

2017-01-12 Thread Roger Quadros
William, On 12/01/17 14:03, William Wu wrote: > From: William wu > > On some platforms(e.g. rk3399 board), we can call hcd_add/remove > consecutively without calling usb_put_hcd/usb_create_hcd in between, > so hcd->flags can be stale. > > If the HC dies due to whatever reason then without this

Re: [PATCH] usb: hcd: initialize hcd->flags to 0 when rm hcd

2017-01-12 Thread Alan Stern
On Thu, 12 Jan 2017, Roger Quadros wrote: > William, > > On 12/01/17 14:03, William Wu wrote: > > From: William wu > > > > On some platforms(e.g. rk3399 board), we can call hcd_add/remove > > consecutively without calling usb_put_hcd/usb_create_hcd in between, > > so hcd->flags can be stale. >

Re: [PATCH] usb: hcd: initialize hcd->flags to 0 when rm hcd

2017-01-12 Thread Roger Quadros
On 12/01/17 17:33, Alan Stern wrote: > On Thu, 12 Jan 2017, Roger Quadros wrote: > >> William, >> >> On 12/01/17 14:03, William Wu wrote: >>> From: William wu >>> >>> On some platforms(e.g. rk3399 board), we can call hcd_add/remove >>> consecutively without calling usb_put_hcd/usb_create_hcd in b

Re: [PATCH] usb: hcd: initialize hcd->flags to 0 when rm hcd

2017-01-12 Thread wlf
Hi Roger， 在 2017年01月12日 23:38, Roger Quadros 写道: On 12/01/17 17:33, Alan Stern wrote: On Thu, 12 Jan 2017, Roger Quadros wrote: William, On 12/01/17 14:03, William Wu wrote: From: William wu On some platforms(e.g. rk3399 board), we can call hcd_add/remove consecutively without calling usb

[RESEND PATCH] usb: hcd: initialize hcd->flags to 0 when rm hcd

2017-01-12 Thread William Wu
From: William wu On some platforms(e.g. rk3399 board), we can call hcd_add/remove consecutively without calling usb_put_hcd/usb_create_hcd in between, so hcd->flags can be stale. If the HC dies due to whatever reason then without this patch we get the below error on next hcd_add. [173.296154] x