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1b967691ec
linux/drivers/usb/musb
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Bin Liu 1b967691ec usb: musb: return -ESHUTDOWN in urb when three-strikes error happened 
When a USB device attached to a hub got disconnected, MUSB controller
generates RXCSR_RX_ERROR interrupt for the 3-strikes-out error.

Currently the MUSB host driver returns -EPROTO in current URB, then the
USB device driver could immediately resubmit the URB which causes MUSB
generate RXCSR_RX_ERROR interrupt again. This circle causes interrupt
storm then the hub never got a chance to report the USB device detach.

To fix the interrupt storm, change the URB return code to -ESHUTDOWN for
MUSB_RXCSR_H_ERROR interrupt, so that the USB device driver will not
immediately resubmit the URB.

Signed-off-by: Bin Liu <b-liu@ti.com>
Link: https://lore.kernel.org/r/20200525025049.3400-2-b-liu@ti.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-05-25 13:36:30 +02:00
..
am35x.c usb: musb: remove references to default_a of struct usb_otg 2018-05-22 12:03:25 +02:00
cppi_dma.c USB: add SPDX identifiers to all remaining files in drivers/usb/ 2017-11-04 11:48:02 +01:00
cppi_dma.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
da8xx.c usb: musb: remove an unused variable 2018-05-31 12:44:39 +02:00
davinci.c usb: musb: davinci: Convert to use GPIO descriptor 2020-01-15 14:47:00 +01:00
davinci.h USB: musb: Use the correct style for SPDX License Identifier 2020-04-16 14:32:47 +02:00
jz4740.c usb: musb: jz4740: Add support for the JZ4770 2020-03-17 20:03:28 +01:00
Kconfig usb: musb: jz4740: Unconditionally depend on devicetree 2020-03-17 20:03:27 +01:00
Makefile usb: musb: remove dummy driver musb_am335x.c 2020-01-15 14:47:00 +01:00
mediatek.c usb: musb: remove redundant assignment to variable ret 2020-03-17 20:03:27 +01:00
musb_core.c usb: musb: core: remove useless cast for driver.name 2020-02-19 11:10:27 +01:00
musb_core.h USB: musb: Use the correct style for SPDX License Identifier 2020-04-16 14:32:47 +02:00
musb_cppi41.c usb: musb: remove duplicated quirks flag 2018-05-22 12:03:24 +02:00
musb_debug.h USB: musb: Use the correct style for SPDX License Identifier 2020-04-16 14:32:47 +02:00
musb_debugfs.c usb: musb: create debugfs directory under usb root 2019-11-21 18:20:29 +01:00
musb_dma.h USB: musb: Use the correct style for SPDX License Identifier 2020-04-16 14:32:47 +02:00
musb_dsps.c usb: musb: dsps: create debugfs directory under usb root 2019-11-14 11:16:35 +08:00
musb_gadget_ep0.c usb: musb: gadget: misplaced out of bounds check 2018-03-29 18:37:28 +02:00
musb_gadget.c usb: Spelling s/enpoint/endpoint/ 2019-11-04 15:53:00 +01:00
musb_gadget.h USB: musb: Use the correct style for SPDX License Identifier 2020-04-16 14:32:47 +02:00
musb_host.c usb: musb: return -ESHUTDOWN in urb when three-strikes error happened 2020-05-25 13:36:30 +02:00
musb_host.h USB: musb: Use the correct style for SPDX License Identifier 2020-04-16 14:32:47 +02:00
musb_io.h USB: musb: Use the correct style for SPDX License Identifier 2020-04-16 14:32:47 +02:00
musb_regs.h USB: musb: Use the correct style for SPDX License Identifier 2020-04-16 14:32:47 +02:00
musb_trace.c USB: musb: Remove redundant license text 2017-11-07 15:45:01 +01:00
musb_trace.h USB: musb: Use the correct style for SPDX License Identifier 2020-04-16 14:32:47 +02:00
musb_virthub.c usb: musb: remove duplicated port mode enum 2018-05-22 12:03:25 +02:00
musbhsdma.c usb: musb: Add musb_clearb/w() interface 2020-01-15 14:46:59 +01:00
omap2430.c usb: musb: Get rid of omap2430_musb_set_vbus() 2020-01-15 14:46:56 +01:00
omap2430.h USB: musb: Use the correct style for SPDX License Identifier 2020-04-16 14:32:47 +02:00
sunxi.c usb: musb: Add musb_clearb/w() interface 2020-01-15 14:46:59 +01:00
tusb6010_omap.c USB: musb: Remove redundant license text 2017-11-07 15:45:01 +01:00
tusb6010.c usb: musb: tusb6010: fix a possible missing data type replacement 2020-03-17 20:03:28 +01:00
tusb6010.h USB: musb: Use the correct style for SPDX License Identifier 2020-04-16 14:32:47 +02:00
ux500_dma.c usb: musb/ux500: Use dma_request_chan() instead dma_request_slave_channel() 2020-01-15 14:46:58 +01:00
ux500.c usb: musb: remove references to default_a of struct usb_otg 2018-05-22 12:03:25 +02:00