Johan Hovold 706d61b243 USB: musb: dsps: add explicit runtime resume at suspend ... The musb_dsps driver is special in that the parent (glue) device's driver is accessing registers mapped by the child. The clock is however shared and is managed by the grandparent device. Since commit 869c597829 ("usb: musb: dsps: add support for suspend and resume") the dsps driver has been accessing these registers as part of suspend and resume. The parent driver obviously cannot runtime resume the child during system suspend and is currently relying on the fact that the child will be RPM_ACTIVE throughout suspend. The suspend implementation also makes sure to check that the child is indeed present (and hence the clock enabled) before accessing the registers. Let's add an explicit runtime resume of the glue device itself to enable the clock before doing the register accesses in case these assumptions ever change (i.e. if the child is left runtime suspended). Note that the glue-timer cancellation is moved after the child-presence check to keep error handling simple. This should be fine as the timer is not setup until the controller is being registered and at that time glue->musb and its driver data have already been initialised. Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Daniel Mack <zonque@gmail.com> Cc: Tony Lindgren <tony@atomide.com> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Bin Liu <b-liu@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2017-08-28 10:51:56 +02:00
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am35x.c
blackfin.c
blackfin.h
cppi_dma.c	usb: musb: cppi_dma.c: use DIV_ROUND_UP macro in cppi_next_(r|t)x_segment()	2017-04-18 16:48:26 +02:00
cppi_dma.h	usb: musb: cppi_dma: Clean up cppi structure	2017-02-09 13:35:05 +01:00
da8xx.c	usb: musb: don't mark of_dev_auxdata as initdata	2017-04-26 11:30:02 +02:00
davinci.c
davinci.h
jz4740.c
Kconfig	usb: musb: Add support of CPPI 4.1 DMA controller to DA8xx	2017-04-18 16:48:26 +02:00
Makefile
musb_am335x.c
musb_core.c	USB: musb: fix external abort on suspend	2017-08-28 10:51:55 +02:00
musb_core.h	usb: musb: add helper function musb_ep_xfertype_string	2017-08-28 10:51:55 +02:00
musb_cppi41.c	usb: musb: musb_cppi41: Defer probe only if DMA is not ready	2017-06-20 11:45:01 +08:00
musb_debug.h
musb_debugfs.c
musb_dma.h
musb_dsps.c	USB: musb: dsps: add explicit runtime resume at suspend	2017-08-28 10:51:56 +02:00
musb_gadget.c	usb: musb: add helper function musb_ep_xfertype_string	2017-08-28 10:51:55 +02:00
musb_gadget.h
musb_gadget_ep0.c
musb_host.c	usb: musb: print an error message when high bandwidth is unsupported	2017-08-28 10:51:55 +02:00
musb_host.h
musb_io.h
musb_regs.h
musb_trace.c
musb_trace.h
musb_virthub.c
musbhsdma.c
musbhsdma.h
omap2430.c
omap2430.h
sunxi.c
tusb6010.c	usb: musb: tusb6010: Handle DMA TX completion in DMA callback as well	2017-06-20 11:45:01 +08:00
tusb6010.h
tusb6010_omap.c	usb: musb: tusb6010_omap: Convert to DMAengine API	2017-06-20 11:45:01 +08:00
ux500.c
ux500_dma.c