On Thu, Jan 05, 2017 at 07:17:51PM +0100, Greg KH wrote: > On Tue, Jan 03, 2017 at 06:13:51PM -0600, Bin Liu wrote: > > MUSB driver now has runtime PM support, but the debugfs driver misses > > the PM _get/_put() calls, which could cause MUSB register access > > failure. > > > > Cc: stable@xxxxxxxxxxxxxxx # 4.9+ > > Signed-off-by: Bin Liu <b-liu@xxxxxx> > > Acked-by: Tony Lindgren <tony@xxxxxxxxxxx> > > --- > > v2: no change. > > > > drivers/usb/musb/musb_debugfs.c | 20 +++++++++++++++++++- > > 1 file changed, 19 insertions(+), 1 deletion(-) > > This looks like a new feature, it's never worked before, why add it now? > This is not a new feature, but fixing the PM regression. musb has runtime PM added back in v4.9, but forgot to add the PM calls in the debugfs driver, which causes all the musb debugfs interface not functional. Regards, -Bin. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
