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] tm6000: Add locking for USB transfers Author: Thierry Reding <[email protected]> Date: Thu Aug 4 04:14:10 2011 -0300 This commit introduces the usb_lock mutex to ensure that a USB request always gets the proper response. While this is currently not really necessary it will become important as there are more users. Signed-off-by: Thierry Reding <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> drivers/staging/tm6000/tm6000-cards.c | 1 + drivers/staging/tm6000/tm6000-core.c | 4 +++- drivers/staging/tm6000/tm6000.h | 1 + 3 files changed, 5 insertions(+), 1 deletions(-) --- http://git.linuxtv.org/media_tree.git?a=commitdiff;h=fc4eab2cbae547fb278c2583b77ee0ff7f5832d3 diff --git a/drivers/staging/tm6000/tm6000-cards.c b/drivers/staging/tm6000/tm6000-cards.c index bac4309..f247e7e 100644 --- a/drivers/staging/tm6000/tm6000-cards.c +++ b/drivers/staging/tm6000/tm6000-cards.c @@ -1168,6 +1168,7 @@ static int tm6000_usb_probe(struct usb_interface *interface, return -ENOMEM; } spin_lock_init(&dev->slock); + mutex_init(&dev->usb_lock); /* Increment usage count */ tm6000_devused |= 1<<nr; diff --git a/drivers/staging/tm6000/tm6000-core.c b/drivers/staging/tm6000/tm6000-core.c index f85e5f2..31fdf15 100644 --- a/drivers/staging/tm6000/tm6000-core.c +++ b/drivers/staging/tm6000/tm6000-core.c @@ -39,6 +39,8 @@ int tm6000_read_write_usb(struct tm6000_core *dev, u8 req_type, u8 req, unsigned int pipe; u8 *data = NULL; + mutex_lock(&dev->usb_lock); + if (len) data = kzalloc(len, GFP_KERNEL); @@ -86,9 +88,9 @@ int tm6000_read_write_usb(struct tm6000_core *dev, u8 req_type, u8 req, } kfree(data); - msleep(5); + mutex_unlock(&dev->usb_lock); return ret; } diff --git a/drivers/staging/tm6000/tm6000.h b/drivers/staging/tm6000/tm6000.h index 4323fc2..cf57e1e 100644 --- a/drivers/staging/tm6000/tm6000.h +++ b/drivers/staging/tm6000/tm6000.h @@ -245,6 +245,7 @@ struct tm6000_core { /* locks */ struct mutex lock; + struct mutex usb_lock; /* usb transfer */ struct usb_device *udev; /* the usb device */ _______________________________________________ linuxtv-commits mailing list [email protected] http://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
