From b124d597496fad3ba1ead7ed3b6c197c5b0a2ee7 Mon Sep 17 00:00:00 2001 From: Douglas Schilling Landgraf Date: Sun, 25 Jan 2009 19:19:23 -0300 Subject: [PATCH] V4L/DVB (10327): em28xx: Add check before call em28xx_isoc_audio_deinit() Just call em28xx_isoc_audio_deinit() if em28xx sent a usb_submit(). Signed-off-by: Douglas Schilling Landgraf Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/em28xx/em28xx-audio.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/media/video/em28xx/em28xx-audio.c b/drivers/media/video/em28xx/em28xx-audio.c index 7a62c77b8485..43e8d7d91a96 100644 --- a/drivers/media/video/em28xx/em28xx-audio.c +++ b/drivers/media/video/em28xx/em28xx-audio.c @@ -61,7 +61,7 @@ static int em28xx_isoc_audio_deinit(struct em28xx *dev) int i; dprintk("Stopping isoc\n"); - for (i = 0; i < EM28XX_AUDIO_BUFS; i++) { + for (i = 0; i < dev->isoc_ctl.num_bufs; i++) { if (!irqs_disabled()) usb_kill_urb(dev->adev.urb[i]); else @@ -73,6 +73,7 @@ static int em28xx_isoc_audio_deinit(struct em28xx *dev) dev->adev.transfer_buffer[i] = NULL; } + dev->isoc_ctl.num_bufs = 0; return 0; } @@ -156,6 +157,8 @@ static int em28xx_init_audio_isoc(struct em28xx *dev) dprintk("Starting isoc transfers\n"); + dev->isoc_ctl.num_bufs = 0; + for (i = 0; i < EM28XX_AUDIO_BUFS; i++) { struct urb *urb; int j, k; @@ -197,10 +200,19 @@ static int em28xx_init_audio_isoc(struct em28xx *dev) for (i = 0; i < EM28XX_AUDIO_BUFS; i++) { errCode = usb_submit_urb(dev->adev.urb[i], GFP_ATOMIC); if (errCode) { - em28xx_isoc_audio_deinit(dev); + if (dev->isoc_ctl.num_bufs == 0) { + usb_free_urb(dev->adev.urb[i]); + dev->adev.urb[i] = NULL; + kfree(dev->adev.transfer_buffer[i]); + dev->adev.transfer_buffer[i] = NULL; + } else + em28xx_isoc_audio_deinit(dev); return errCode; } + mutex_lock(&dev->lock); + dev->isoc_ctl.num_bufs++; + mutex_unlock(&dev->lock); } return 0; -- 2.20.1