diff options
| author |   Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
|---|---|---|
| committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
| commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
| tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/staging/ozwpan/ozurbparanoia.c | |
| parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) | |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/staging/ozwpan/ozurbparanoia.c')
| -rw-r--r-- | kernel/drivers/staging/ozwpan/ozurbparanoia.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/kernel/drivers/staging/ozwpan/ozurbparanoia.c b/kernel/drivers/staging/ozwpan/ozurbparanoia.c new file mode 100644 index 000000000..cf6278a19 --- /dev/null +++ b/kernel/drivers/staging/ozwpan/ozurbparanoia.c @@ -0,0 +1,54 @@ +/* ----------------------------------------------------------------------------- + * Copyright (c) 2011 Ozmo Inc + * Released under the GNU General Public License Version 2 (GPLv2). + * ----------------------------------------------------------------------------- + */ +#include <linux/usb.h> +#include "ozdbg.h" + +#ifdef WANT_URB_PARANOIA + +#include "ozurbparanoia.h" + +#define OZ_MAX_URBS 1000 +struct urb *g_urb_memory[OZ_MAX_URBS]; +int g_nb_urbs; +DEFINE_SPINLOCK(g_urb_mem_lock); + +void oz_remember_urb(struct urb *urb) +{ + unsigned long irq_state; + + spin_lock_irqsave(&g_urb_mem_lock, irq_state); + if (g_nb_urbs < OZ_MAX_URBS) { + g_urb_memory[g_nb_urbs++] = urb; + oz_dbg(ON, "urb up = %d %p\n", g_nb_urbs, urb); + } else { + oz_dbg(ON, "ERROR urb buffer full\n"); + } + spin_unlock_irqrestore(&g_urb_mem_lock, irq_state); +} + +/* + */ +int oz_forget_urb(struct urb *urb) +{ + unsigned long irq_state; + int i; + int rc = -1; + + spin_lock_irqsave(&g_urb_mem_lock, irq_state); + for (i = 0; i < g_nb_urbs; i++) { + if (g_urb_memory[i] == urb) { + rc = 0; + if (--g_nb_urbs > i) + memcpy(&g_urb_memory[i], &g_urb_memory[i+1], + (g_nb_urbs - i) * sizeof(struct urb *)); + oz_dbg(ON, "urb down = %d %p\n", g_nb_urbs, urb); + } + } + spin_unlock_irqrestore(&g_urb_mem_lock, irq_state); + return rc; +} +#endif /* #ifdef WANT_URB_PARANOIA */ + |