diff options
| -rw-r--r-- | arch/arm/plat-omap/mailbox.c | 70 |
1 files changed, 4 insertions, 66 deletions
diff --git a/arch/arm/plat-omap/mailbox.c b/arch/arm/plat-omap/mailbox.c index 734bff332c82..f82810eeb3f4 100644 --- a/arch/arm/plat-omap/mailbox.c +++ b/arch/arm/plat-omap/mailbox.c @@ -28,54 +28,9 @@ #include <plat/mailbox.h> -static int enable_seq_bit; -module_param(enable_seq_bit, bool, 0); -MODULE_PARM_DESC(enable_seq_bit, "Enable sequence bit checking."); - static struct omap_mbox *mboxes; static DEFINE_RWLOCK(mboxes_lock); -/* - * Mailbox sequence bit API - */ - -/* seq_rcv should be initialized with any value other than - * 0 and 1 << 31, to allow either value for the first - * message. */ -static inline void mbox_seq_init(struct omap_mbox *mbox) -{ - if (!enable_seq_bit) - return; - - /* any value other than 0 and 1 << 31 */ - mbox->seq_rcv = 0xffffffff; -} - -static inline void mbox_seq_toggle(struct omap_mbox *mbox, mbox_msg_t * msg) -{ - if (!enable_seq_bit) - return; - - /* add seq_snd to msg */ - *msg = (*msg & 0x7fffffff) | mbox->seq_snd; - /* flip seq_snd */ - mbox->seq_snd ^= 1 << 31; -} - -static inline int mbox_seq_test(struct omap_mbox *mbox, mbox_msg_t msg) -{ - mbox_msg_t seq; - - if (!enable_seq_bit) - return 0; - - seq = msg & (1 << 31); - if (seq == mbox->seq_rcv) - return -1; - mbox->seq_rcv = seq; - return 0; -} - /* Mailbox FIFO handle functions */ static inline mbox_msg_t mbox_fifo_read(struct omap_mbox *mbox) { @@ -113,13 +68,6 @@ static inline int is_mbox_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq) return mbox->ops->is_irq(mbox, irq); } -/* Mailbox Sequence Bit function */ -void omap_mbox_init_seq(struct omap_mbox *mbox) -{ - mbox_seq_init(mbox); -} -EXPORT_SYMBOL(omap_mbox_init_seq); - /* * message sender */ @@ -141,7 +89,6 @@ static int __mbox_msg_send(struct omap_mbox *mbox, mbox_msg_t msg, void *arg) goto out; } - mbox_seq_toggle(mbox, &msg); mbox_fifo_write(mbox, msg); out: return ret; @@ -254,11 +201,11 @@ static void mbox_rx_work(struct work_struct *work) /* * Mailbox interrupt handler */ -static void mbox_txq_fn(struct request_queue * q) +static void mbox_txq_fn(struct request_queue *q) { } -static void mbox_rxq_fn(struct request_queue * q) +static void mbox_rxq_fn(struct request_queue *q) { } @@ -284,11 +231,6 @@ static void __mbox_rx_interrupt(struct omap_mbox *mbox) msg = mbox_fifo_read(mbox); - if (unlikely(mbox_seq_test(mbox, msg))) { - pr_info("mbox: Illegal seq bit!(%08x)\n", msg); - if (mbox->err_notify) - mbox->err_notify(); - } blk_insert_request(q, rq, 0, (void *)msg); if (mbox->ops->type == OMAP_MBOX_TYPE1) @@ -320,7 +262,7 @@ static irqreturn_t mbox_interrupt(int irq, void *p) */ static ssize_t omap_mbox_write(struct device *dev, struct device_attribute *attr, - const char * buf, size_t count) + const char *buf, size_t count) { int ret; mbox_msg_t *p = (mbox_msg_t *)buf; @@ -357,10 +299,6 @@ omap_mbox_read(struct device *dev, struct device_attribute *attr, char *buf) blk_end_request_all(rq, 0); - if (unlikely(mbox_seq_test(mbox, *p))) { - pr_info("mbox: Illegal seq bit!(%08x) ignored\n", *p); - continue; - } p++; } @@ -383,7 +321,7 @@ static struct class omap_mbox_class = { }; static struct omap_mbox_queue *mbox_queue_alloc(struct omap_mbox *mbox, - request_fn_proc * proc, + request_fn_proc *proc, void (*work) (struct work_struct *)) { struct request_queue *q; |