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author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-03-27 11:32:29 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-03-27 11:32:29 -0300 |
commit | 50953e0640b3473dcb409d5d0d938c2742c93b0d (patch) | |
tree | 3b0dc374e61564fbbd8adff92c8fae16fdeb423a /drivers/staging/ozwpan/ozurbparanoia.c | |
parent | f92c97c8bd77992ff8bd6ef29a23dc82dca799cb (diff) | |
parent | 626cf236608505d376e4799adb4f7eb00a8594af (diff) | |
download | op-kernel-dev-50953e0640b3473dcb409d5d0d938c2742c93b0d.zip op-kernel-dev-50953e0640b3473dcb409d5d0d938c2742c93b0d.tar.gz |
Merge branch 'poll' into staging/for_v3.4
* poll: (5970 commits)
poll: add poll_requested_events() and poll_does_not_wait() functions
crc32: select an algorithm via Kconfig
crc32: add self-test code for crc32c
crypto: crc32c should use library implementation
crc32: bolt on crc32c
crc32: add note about this patchset to crc32.c
crc32: optimize loop counter for x86
crc32: add slice-by-8 algorithm to existing code
crc32: make CRC_*_BITS definition correspond to actual bit counts
crc32: fix mixing of endian-specific types
crc32: miscellaneous cleanups
crc32: simplify unit test code
crc32: move long comment about crc32 fundamentals to Documentation/
crc32: remove two instances of trailing whitespaces
checkpatch: check for quoted strings broken across lines
checkpatch: whitespace - add/remove blank lines
checkpatch: warn on use of yield()
checkpatch: add --strict tests for braces, comments and casts
checkpatch: add [] to type extensions
checkpatch: high precedence operators do not require additional parentheses in #defines
...
Diffstat (limited to 'drivers/staging/ozwpan/ozurbparanoia.c')
-rw-r--r-- | drivers/staging/ozwpan/ozurbparanoia.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/drivers/staging/ozwpan/ozurbparanoia.c b/drivers/staging/ozwpan/ozurbparanoia.c new file mode 100644 index 0000000..55b9afb --- /dev/null +++ b/drivers/staging/ozwpan/ozurbparanoia.c @@ -0,0 +1,53 @@ +/* ----------------------------------------------------------------------------- + * Copyright (c) 2011 Ozmo Inc + * Released under the GNU General Public License Version 2 (GPLv2). + * ----------------------------------------------------------------------------- + */ +#include <linux/usb.h> +#include "ozconfig.h" +#ifdef WANT_URB_PARANOIA +#include "ozurbparanoia.h" +#include "oztrace.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_trace("%lu: urb up = %d %p\n", jiffies, g_nb_urbs, urb); + } else { + oz_trace("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_trace("%lu: urb down = %d %p\n", + jiffies, g_nb_urbs, urb); + } + } + spin_unlock_irqrestore(&g_urb_mem_lock, irq_state); + return rc; +} +#endif /* #ifdef WANT_URB_PARANOIA */ + |