USB: serial: belkin_sa: fix TIOCMBIS and TIOCMBIC

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commit b6e0b30161 upstream.

Asserting or deasserting a modem control line using TIOCMBIS or TIOCMBIC
should not deassert any lines that are not in the mask.

Fix this long-standing regression dating back to 2003 when the
tiocmset() callback was introduced.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Johan Hovold 2025-10-22 17:26:33 +02:00 • committed by Greg Kroah-Hartman

parent 0423aaa295

commit 2ceb2b5813

1 changed files with 17 additions and 11 deletions

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drivers/usb/serial/belkin_sa.c

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