This is an automatic generated email to let you know that the following patch were queued at the http://git.linuxtv.org/media_tree.git tree:
Subject: [media] media/au0828: Fix IR stop, poll to not access device during disconnect Author: Shuah Khan <shua...@osg.samsung.com> Date: Fri Nov 21 21:17:08 2014 -0300 au0828 IR stop and poll routines continue to access device while usb disconnect is in progress. There is small window between device disconnect and usb interface is set to null. This results in filling the log with several of the following error messages. Fix it to detect device disconnect condition and avoid device access. Nov 20 18:58:02 anduin kernel: [ 102.949819] au0828: au0828_usb_disconnect() Nov 20 18:58:02 anduin kernel: [ 102.950046] au0828: send_control_msg() Failed sending control message, error -71. Nov 20 18:58:02 anduin kernel: [ 102.950052] au0828: send_control_msg() Failed sending control message, error -19. Nov 20 18:58:02 anduin kernel: [ 102.950056] au0828: send_control_msg() Failed sending control message, error -19. Nov 20 18:58:02 anduin kernel: [ 102.950061] au0828: send_control_msg() Failed sending control message, error -19. Nov 20 18:58:02 anduin kernel: [ 102.950065] au0828: recv_control_msg() Failed receiving control message, error -19. Nov 20 18:58:02 anduin kernel: [ 102.950069] au0828: recv_control_msg() Failed receiving control message, error -19. Nov 20 18:58:02 anduin kernel: [ 102.950072] au0828: recv_control_msg() Failed receiving control message, error -19. Signed-off-by: Shuah Khan <shua...@osg.samsung.com> Signed-off-by: Mauro Carvalho Chehab <mche...@osg.samsung.com> drivers/media/usb/au0828/au0828-core.c | 8 ++++++++ drivers/media/usb/au0828/au0828-input.c | 11 +++++++++-- 2 files changed, 17 insertions(+), 2 deletions(-) --- http://git.linuxtv.org/media_tree.git?a=commitdiff;h=eb336eab3e6ccb9b100b934a2d5677dfaa66d4de diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c index bc06480..082ae6b 100644 --- a/drivers/media/usb/au0828/au0828-core.c +++ b/drivers/media/usb/au0828/au0828-core.c @@ -153,6 +153,14 @@ static void au0828_usb_disconnect(struct usb_interface *interface) dprintk(1, "%s()\n", __func__); + /* there is a small window after disconnect, before + dev->usbdev is NULL, for poll (e.g: IR) try to access + the device and fill the dmesg with error messages. + Set the status so poll routines can check and avoid + access after disconnect. + */ + dev->dev_state = DEV_DISCONNECTED; + au0828_rc_unregister(dev); /* Digital TV */ au0828_dvb_unregister(dev); diff --git a/drivers/media/usb/au0828/au0828-input.c b/drivers/media/usb/au0828/au0828-input.c index 11a8dae..b0f0679 100644 --- a/drivers/media/usb/au0828/au0828-input.c +++ b/drivers/media/usb/au0828/au0828-input.c @@ -129,6 +129,10 @@ static int au0828_get_key_au8522(struct au0828_rc *ir) int prv_bit, bit, width; bool first = true; + /* do nothing if device is disconnected */ + if (ir->dev->dev_state == DEV_DISCONNECTED) + return 0; + /* Check IR int */ rc = au8522_rc_read(ir, 0xe1, -1, buf, 1); if (rc < 0 || !(buf[0] & (1 << 4))) { @@ -255,8 +259,11 @@ static void au0828_rc_stop(struct rc_dev *rc) cancel_delayed_work_sync(&ir->work); - /* Disable IR */ - au8522_rc_clear(ir, 0xe0, 1 << 4); + /* do nothing if device is disconnected */ + if (ir->dev->dev_state != DEV_DISCONNECTED) { + /* Disable IR */ + au8522_rc_clear(ir, 0xe0, 1 << 4); + } } static int au0828_probe_i2c_ir(struct au0828_dev *dev) _______________________________________________ linuxtv-commits mailing list linuxtv-commits@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
