From: Mark Hounschell Date: Tue, 4 Mar 2014 21:03:08 +0000 (-0500) Subject: staging: dgap: remove unnecessary dgap_global_lock X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=a9072fe0569fd25fe924d0d2c577d4ff11158d43;p=openwrt%2Fstaging%2Fblogic.git staging: dgap: remove unnecessary dgap_global_lock dgap_global_lock is no longer required. This patch removes it. Signed-off-by: Mark Hounschell Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/dgap/dgap.c b/drivers/staging/dgap/dgap.c index 85f85eb166e1..c53bdb594f97 100644 --- a/drivers/staging/dgap/dgap.c +++ b/drivers/staging/dgap/dgap.c @@ -240,7 +240,6 @@ static const struct file_operations DgapBoardFops = { */ static uint dgap_NumBoards; static struct board_t *dgap_Board[MAXBOARDS]; -DEFINE_SPINLOCK(dgap_global_lock); static ulong dgap_poll_counter; static char *dgap_config_buf; static int dgap_driver_state = DRIVER_INITIALIZED; @@ -1264,10 +1263,6 @@ static int dgap_ms_sleep(ulong ms) */ static int dgap_tty_preinit(void) { - unsigned long flags; - - DGAP_LOCK(dgap_global_lock, flags); - /* * Allocate a buffer for doing the copy from user space to * kernel space in dgap_input(). We only use one buffer and @@ -1276,12 +1271,9 @@ static int dgap_tty_preinit(void) */ dgap_TmpWriteBuf = kmalloc(WRITEBUFLEN, GFP_ATOMIC); - if (!dgap_TmpWriteBuf) { - DGAP_UNLOCK(dgap_global_lock, flags); + if (!dgap_TmpWriteBuf) return -ENOMEM; - } - DGAP_UNLOCK(dgap_global_lock, flags); return 0; }