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Message-Id: <1245843077-4442-2-git-send-email-cascardo@holoscopio.com> Date: Wed, 24 Jun 2009 08:31:16 -0300 From: Thadeu Lima de Souza Cascardo <cascardo@...oscopio.com> To: linux-kernel@...r.kernel.org Cc: alan@...rguk.ukuu.org.uk, gregkh@...e.de, linux-usb@...r.kernel.org, oliver@...kum.name, Thadeu Lima de Souza Cascardo <cascardo@...oscopio.com> Subject: [PATCH 2/3] Fix oops when closing ACM tty device right after open has failed. This commit 10077d4a6674f535abdbe25cdecb1202af7948f1 has stopped checking if there was a valid acm device associated to the tty, which is not true right after open fails and tty subsystem tries to close the device. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@...oscopio.com> --- drivers/usb/class/cdc-acm.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 02eb60b..3f10459 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -677,7 +677,7 @@ static void acm_tty_close(struct tty_struct *tty, struct file *filp) /* Perform the closing process and see if we need to do the hardware shutdown */ - if (tty_port_close_start(&acm->port, tty, filp) == 0) + if (!acm || tty_port_close_start(&acm->port, tty, filp) == 0) return; acm_port_down(acm, 0); tty_port_close_end(&acm->port, tty); -- 1.6.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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