diff options
Diffstat (limited to 'drivers/macintosh')
| -rw-r--r-- | drivers/macintosh/via-macii.c | 49 |
1 files changed, 7 insertions, 42 deletions
diff --git a/drivers/macintosh/via-macii.c b/drivers/macintosh/via-macii.c index 36a4f49e79b5..7e0e32fa7eb2 100644 --- a/drivers/macintosh/via-macii.c +++ b/drivers/macintosh/via-macii.c @@ -120,23 +120,6 @@ static int srq_asserted; /* have to poll for the device that asserted it */ static int command_byte; /* the most recent command byte transmitted */ static int autopoll_devs; /* bits set are device addresses to be polled */ -/* Sanity check for request queue. Doesn't check for cycles. */ -static int request_is_queued(struct adb_request *req) { - struct adb_request *cur; - unsigned long flags; - local_irq_save(flags); - cur = current_req; - while (cur) { - if (cur == req) { - local_irq_restore(flags); - return 1; - } - cur = cur->next; - } - local_irq_restore(flags); - return 0; -} - /* Check for MacII style ADB */ static int macii_probe(void) { @@ -213,8 +196,6 @@ static void macii_queue_poll(void) else next_device = ffs(autopoll_devs) - 1; - BUG_ON(request_is_queued(&req)); - adb_request(&req, NULL, ADBREQ_NOSEND, 1, ADB_READREG(next_device, 0)); @@ -237,18 +218,13 @@ static int macii_send_request(struct adb_request *req, int sync) int err; unsigned long flags; - BUG_ON(request_is_queued(req)); - local_irq_save(flags); err = macii_write(req); local_irq_restore(flags); - if (!err && sync) { - while (!req->complete) { + if (!err && sync) + while (!req->complete) macii_poll(); - } - BUG_ON(request_is_queued(req)); - } return err; } @@ -327,9 +303,6 @@ static int macii_reset_bus(void) { static struct adb_request req; - if (request_is_queued(&req)) - return 0; - /* Command = 0, Address = ignored */ adb_request(&req, NULL, ADBREQ_NOSEND, 1, ADB_BUSRESET); macii_send_request(&req, 1); @@ -347,10 +320,6 @@ static void macii_start(void) req = current_req; - BUG_ON(req == NULL); - - BUG_ON(macii_state != idle); - /* Now send it. Be careful though, that first byte of the request * is actually ADB_PACKET; the real data begins at index 1! * And req->nbytes is the number of bytes of real data plus one. @@ -388,7 +357,6 @@ static void macii_start(void) static irqreturn_t macii_interrupt(int irq, void *arg) { int x; - static int entered; struct adb_request *req; if (!arg) { @@ -399,8 +367,6 @@ static irqreturn_t macii_interrupt(int irq, void *arg) return IRQ_NONE; } - BUG_ON(entered++); - last_status = status; status = via[B] & (ST_MASK|CTLR_IRQ); @@ -409,7 +375,7 @@ static irqreturn_t macii_interrupt(int irq, void *arg) if (reading_reply) { reply_ptr = current_req->reply; } else { - BUG_ON(current_req != NULL); + WARN_ON(current_req); reply_ptr = reply_buf; } @@ -474,8 +440,8 @@ static irqreturn_t macii_interrupt(int irq, void *arg) case reading: x = via[SR]; - BUG_ON((status & ST_MASK) == ST_CMD || - (status & ST_MASK) == ST_IDLE); + WARN_ON((status & ST_MASK) == ST_CMD || + (status & ST_MASK) == ST_IDLE); /* Bus timeout with SRQ sequence: * data is "XX FF" while CTLR_IRQ is "L L" @@ -502,8 +468,8 @@ static irqreturn_t macii_interrupt(int irq, void *arg) } } - if (macii_state == reading) { - BUG_ON(reply_len > 15); + if (macii_state == reading && + reply_len < ARRAY_SIZE(reply_buf)) { reply_ptr++; *reply_ptr = x; reply_len++; @@ -546,6 +512,5 @@ static irqreturn_t macii_interrupt(int irq, void *arg) break; } - entered--; return IRQ_HANDLED; } |