This is a note to let you know that I've just added the patch titled
CDC-ACM: heed quirk also in error handling
to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-next branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will also be merged in the next major kernel release
during the merge window.
If you have any questions about this process, please let me know.
>From 97fe809934dd2b0b37dfef3a2fc70417f485d7af Mon Sep 17 00:00:00 2001
From: Oliver Neukum <oneukum@xxxxxxxx>
Date: Tue, 26 May 2020 14:44:20 +0200
Subject: CDC-ACM: heed quirk also in error handling
If buffers are iterated over in the error case, the lower limits
for quirky devices must be heeded.
Signed-off-by: Oliver Neukum <oneukum@xxxxxxxx>
Reported-by: Jean Rene Dawin <jdawin@xxxxxxxxxxxxxxxxxxxxx>
Fixes: a4e7279cd1d19 ("cdc-acm: introduce a cool down")
Cc: stable <stable@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20200526124420.22160-1-oneukum@xxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/class/cdc-acm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index ded8d93834ca..f67088bb8218 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -584,7 +584,7 @@ static void acm_softint(struct work_struct *work)
}
if (test_and_clear_bit(ACM_ERROR_DELAY, &acm->flags)) {
- for (i = 0; i < ACM_NR; i++)
+ for (i = 0; i < acm->rx_buflimit; i++)
if (test_and_clear_bit(i, &acm->urbs_in_error_delay))
acm_submit_read_urb(acm, i, GFP_NOIO);
}
--
2.26.2
