From 36adfca94a354b10b4e36684a45e830f6817b067 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sun, 9 Sep 2012 08:04:05 -0300 Subject: [PATCH] [media] gspca: Fix input urb creation / destruction surrounding suspend resume 1) We always re-create the input-urb on resume, so we must also always destroy it on suspend to avoid leaking it 2) If we're going to do an init_transfer, then that will destroy the urb before starting the stream (nop if there is none), and (re-)create it once the stream is started. So there is little use in creating it, if we're going to do an init_transfer immediately afterward Signed-off-by: Hans de Goede Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/gspca/gspca.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/media/usb/gspca/gspca.c b/drivers/media/usb/gspca/gspca.c index 7cce0f201d70..2abbf52c781a 100644 --- a/drivers/media/usb/gspca/gspca.c +++ b/drivers/media/usb/gspca/gspca.c @@ -2391,19 +2391,22 @@ int gspca_suspend(struct usb_interface *intf, pm_message_t message) { struct gspca_dev *gspca_dev = usb_get_intfdata(intf); + gspca_input_destroy_urb(gspca_dev); + if (!gspca_dev->streaming) return 0; + mutex_lock(&gspca_dev->usb_lock); gspca_dev->frozen = 1; /* avoid urb error messages */ gspca_dev->usb_err = 0; if (gspca_dev->sd_desc->stopN) gspca_dev->sd_desc->stopN(gspca_dev); destroy_urbs(gspca_dev); - gspca_input_destroy_urb(gspca_dev); gspca_set_alt0(gspca_dev); if (gspca_dev->sd_desc->stop0) gspca_dev->sd_desc->stop0(gspca_dev); mutex_unlock(&gspca_dev->usb_lock); + return 0; } EXPORT_SYMBOL(gspca_suspend); @@ -2417,7 +2420,6 @@ int gspca_resume(struct usb_interface *intf) gspca_dev->frozen = 0; gspca_dev->usb_err = 0; gspca_dev->sd_desc->init(gspca_dev); - gspca_input_create_urb(gspca_dev); /* * Most subdrivers send all ctrl values on sd_start and thus * only write to the device registers on s_ctrl when streaming -> @@ -2427,7 +2429,10 @@ int gspca_resume(struct usb_interface *intf) gspca_dev->streaming = 0; if (streaming) ret = gspca_init_transfer(gspca_dev); + else + gspca_input_create_urb(gspca_dev); mutex_unlock(&gspca_dev->usb_lock); + return ret; } EXPORT_SYMBOL(gspca_resume); -- 2.39.5