From aa6f3832458dab256f17f451e00270ae3f5736e4 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 5 Nov 2019 09:41:46 +0100 Subject: [PATCH] USB: legousbtower: remove tower_abort_transfers() Drop the tower_abort_transfers() function which is now only called from release and instead explicitly kill the two URBs. This incidentally also fixes the outdated comment about freeing memory. Signed-off-by: Johan Hovold Link: https://lore.kernel.org/r/20191105084152.16322-9-johan@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/legousbtower.c | 20 +++++--------------- 1 file changed, 5 insertions(+), 15 deletions(-) diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c index 3e409dfe172c..f85b6ed2fb8b 100644 --- a/drivers/usb/misc/legousbtower.c +++ b/drivers/usb/misc/legousbtower.c @@ -226,7 +226,6 @@ static int tower_release (struct inode *inode, struct file *file); static __poll_t tower_poll (struct file *file, poll_table *wait); static loff_t tower_llseek (struct file *file, loff_t off, int whence); -static void tower_abort_transfers (struct lego_usb_tower *dev); static void tower_check_for_read_packet (struct lego_usb_tower *dev); static void tower_interrupt_in_callback (struct urb *urb); static void tower_interrupt_out_callback (struct urb *urb); @@ -431,7 +430,11 @@ static int tower_release (struct inode *inode, struct file *file) if (dev->interrupt_out_busy) { wait_event_interruptible_timeout (dev->write_wait, !dev->interrupt_out_busy, 2 * HZ); } - tower_abort_transfers (dev); + + /* shutdown transfers */ + usb_kill_urb(dev->interrupt_in_urb); + usb_kill_urb(dev->interrupt_out_urb); + dev->open_count = 0; mutex_unlock(&dev->lock); @@ -439,19 +442,6 @@ exit: return retval; } - -/** - * tower_abort_transfers - * aborts transfers and frees associated data structures - */ -static void tower_abort_transfers (struct lego_usb_tower *dev) -{ - /* shutdown transfer */ - usb_kill_urb(dev->interrupt_in_urb); - usb_kill_urb(dev->interrupt_out_urb); -} - - /** * tower_check_for_read_packet * -- 2.25.1