AuxXxilium/linux_dsm_epyc7002
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445ef61543
linux_dsm_epyc7002/drivers/usb/musb
History
Jonathan Liu 445ef61543 usb: musb: Check for host-mode using is_host_active() on reset interrupt 
The sunxi musb has a bug where sometimes it will generate a babble
error on device disconnect instead of a disconnect IRQ. When this
happens the musb controller switches from host mode to device mode
(it clears MUSB_DEVCTL_HM/MUSB_DEVCTL_SESSION and sets
MUSB_DEVCTL_BDEVICE) and gets stuck in this state.

The babble error is misdetected as a bus reset because MUSB_DEVCTL_HM
was cleared.

To fix this, use is_host_active() rather than (devctl & MUSB_DEVCTL_HM)
to detect babble error so that sunxi musb babble recovery can handle it
by restoring the mode. This information is provided by the driver logic
and does not rely on register contents.

Cc: stable@vger.kernel.org # v4.1+
Signed-off-by: Jonathan Liu <net147@gmail.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-17 11:42:51 +02:00
..
am35x.c usb: musb: am35x: remove redundant code 2017-02-03 10:05:10 +01:00
blackfin.c usb: musb: blackfin: fix unused warnings on suspend/resume 2017-02-03 10:05:11 +01:00
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 usb: musb: davinci: remove redundant code 2017-02-03 10:05:10 +01:00
davinci.h usb: musb: davinci: Fix build breakage 2012-06-04 18:29:42 +03:00
jz4740.c usb: musb: constify musb_hdrc_config structures 2017-01-25 10:52:43 +01:00
Kconfig usb: musb: Add support of CPPI 4.1 DMA controller to DA8xx 2017-04-18 16:48:26 +02:00
Makefile usb: musb: add tracepoints support for debugging 2016-07-17 08:23:57 +09:00
musb_am335x.c usb: musb: Fix panic upon musb_am335x module removal 2014-06-27 10:53:06 -05:00
musb_core.c usb: musb: Check for host-mode using is_host_active() on reset interrupt 2017-10-17 11:42:51 +02:00
musb_core.h USB: musb: fix late external abort on suspend 2017-10-17 11:42:51 +02:00
musb_cppi41.c usb: musb: musb_cppi41: Configure the number of channels for DA8xx 2017-10-17 11:42:51 +02:00
musb_debug.h usb: musb: add tracepoints support for debugging 2016-07-17 08:23:57 +09:00
musb_debugfs.c usb: musb: debugfs: allow forcing host mode together with speed in testmode 2017-02-03 10:05:11 +01:00
musb_dma.h usb: musb: dma: Add a DMA completion platform callback 2017-02-09 13:35:05 +01:00
musb_dsps.c USB: musb: dsps: add explicit runtime resume at suspend 2017-08-28 10:51:56 +02:00
musb_gadget_ep0.c usb: musb: switch dev_dbg to tracepoints 2016-07-17 08:23:57 +09:00
musb_gadget.c usb: musb: add helper function musb_ep_xfertype_string 2017-08-28 10:51:55 +02:00
musb_gadget.h usb: musb: add Kconfig options for HOST, GAGDET or DUAL_ROLE modes 2013-05-28 19:22:23 +03:00
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 usb: musb: fix prototype for musb_port_reset 2013-12-20 15:05:43 -06:00
musb_io.h usb: musb: Make busctl_offset an io-op rather then a define 2015-05-26 10:46:54 -05:00
musb_regs.h usb: musb: Make busctl_offset an io-op rather then a define 2015-05-26 10:46:54 -05:00
musb_trace.c usb: musb: add tracepoints support for debugging 2016-07-17 08:23:57 +09:00
musb_trace.h usb: musb: cppi41: add dma channel tracepoints 2016-07-17 08:23:57 +09:00
musb_virthub.c USB: musb: remove obsolete resume-signalling comments 2016-11-21 17:35:36 +01:00
musbhsdma.c usb: musb: switch dev_dbg to tracepoints 2016-07-17 08:23:57 +09:00
musbhsdma.h usb: musb: Fix trying to free already-free IRQ 4 2017-01-05 19:18:05 +01:00
omap2430.c usb: musb: omap2430: constify dev_pm_ops structures 2017-02-03 10:05:11 +01:00
omap2430.h usb: start using the control module driver 2013-01-25 12:27:24 +02:00
sunxi.c usb: musb: sunxi: add support for the variant in H3/V3s SoC 2017-02-03 10:05:11 +01:00
tusb6010_omap.c usb: musb: tusb6010_omap: Convert to DMAengine API 2017-06-20 11:45:01 +08:00
tusb6010.c usb: musb: tusb6010: Handle DMA TX completion in DMA callback as well 2017-06-20 11:45:01 +08:00
tusb6010.h usb: musb: Fix up DMA related macros 2015-05-07 13:35:46 -05:00
ux500_dma.c usb: musb/ux500: remove duplicate check for dma_is_compatible 2016-03-04 15:14:30 +02:00
ux500.c usb: musb: constify musb_hdrc_config structures 2017-01-25 10:52:43 +01:00