diff options
| author | Oliver Neukum <oneukum@suse.com> | 2024-09-24 10:43:45 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-05 14:02:36 +0100 |
| commit | 2a0f671e9f0ba8356658da0e93db3bfa2abcfead (patch) | |
| tree | 04288145ef38cfecd6d047fc8647d471004d67cc | |
| parent | 7cd0064f210972794bb993fa5c6677fb8ceb93c1 (diff) | |
usb: yurex: make waiting on yurex_write interruptible
[ Upstream commit e0aa9614ab0fd35b404e4b16ebe879f9fc152591 ]
The IO yurex_write() needs to wait for in order to have a device
ready for writing again can take a long time time.
Consequently the sleep is done in an interruptible state.
Therefore others waiting for yurex_write() itself to finish should
use mutex_lock_interruptible.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Fixes: 6bc235a2e24a5 ("USB: add driver for Meywa-Denki & Kayac YUREX")
Rule: add
Link: https://lore.kernel.org/stable/20240924084415.300557-1-oneukum%40suse.com
Link: https://lore.kernel.org/r/20240924084415.300557-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/usb/misc/iowarrior.c | 4 | ||||
| -rw-r--r-- | drivers/usb/misc/yurex.c | 5 |
2 files changed, 4 insertions, 5 deletions
diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c index a513766b4985..365c10069345 100644 --- a/drivers/usb/misc/iowarrior.c +++ b/drivers/usb/misc/iowarrior.c @@ -911,7 +911,6 @@ error: static void iowarrior_disconnect(struct usb_interface *interface) { struct iowarrior *dev = usb_get_intfdata(interface); - int minor = dev->minor; usb_deregister_dev(interface, &iowarrior_class); @@ -935,9 +934,6 @@ static void iowarrior_disconnect(struct usb_interface *interface) mutex_unlock(&dev->mutex); iowarrior_delete(dev); } - - dev_info(&interface->dev, "I/O-Warror #%d now disconnected\n", - minor - IOWARRIOR_MINOR_BASE); } /* usb specific object needed to register this driver with the usb subsystem */ diff --git a/drivers/usb/misc/yurex.c b/drivers/usb/misc/yurex.c index 6aebc736a80c..70dff0db5354 100644 --- a/drivers/usb/misc/yurex.c +++ b/drivers/usb/misc/yurex.c @@ -441,7 +441,10 @@ static ssize_t yurex_write(struct file *file, const char __user *user_buffer, if (count == 0) goto error; - mutex_lock(&dev->io_mutex); + retval = mutex_lock_interruptible(&dev->io_mutex); + if (retval < 0) + return -EINTR; + if (dev->disconnected) { /* already disconnected */ mutex_unlock(&dev->io_mutex); retval = -ENODEV; |