usb: musb: host: clear stale RX interrupt on three-strikes error

Browse source

Unplugging a busy USB Ethernet adapter can leave a stale RX interrupt
pending while the host handles MUSB_RXCSR_H_ERROR. On AM335x/DSPS
platforms this can retrigger the same three-strikes error before the
disconnect path completes, flooding the log and potentially leaving the
host port stuck until reboot.

Clear the pending endpoint RX interrupt when aborting the transfer so
the error storm is broken, and rate limit the error message to avoid
spamming the log while the fault path completes.

Signed-off-by: Lucas Martins Alves <lucas.alves@lumal21.com.br>
Link: https://patch.msgid.link/20260714134941.18508-1-lucas.alves@lumal21.com.br
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Lucas Martins Alves 2026-07-14 13:49:49 +00:00 • committed by Greg Kroah-Hartman

parent c7ca309d57

commit 3a3a484873

1 changed files with 13 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

14

drivers/usb/musb/musb_host.c

View file