diff options
| author |   Finn Thain <fthain@telegraphics.com.au> | 2020-05-31 09:17:03 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2020-07-26 23:34:24 +1000 |
| commit | aac840eca8fec02d594560647130d4e4447e10d9 (patch) | |
| tree | b0957b11a7879d06cb7531bace1c8e8e5661fa4d /drivers/macintosh | |
| parent | macintosh/adb-iop: Adopt bus reset algorithm from via-macii driver (diff) | |
| download | linux-dev-aac840eca8fec02d594560647130d4e4447e10d9.tar.xz linux-dev-aac840eca8fec02d594560647130d4e4447e10d9.zip | |
macintosh/adb-iop: Access current_req and adb_iop_state when inside lock
Drop the redundant local_irq_save/restore() from adb_iop_start() because
the caller has to do it anyway. This is the pattern used in via-macii.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/bbe32b087c7e04d68e2425f6a2df4a414d167c32.1590880623.git.fthain@telegraphics.com.au
Diffstat (limited to 'drivers/macintosh')
| -rw-r--r-- | drivers/macintosh/adb-iop.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/drivers/macintosh/adb-iop.c b/drivers/macintosh/adb-iop.c index c3089dacf2e2..7ecc41bc7358 100644 --- a/drivers/macintosh/adb-iop.c +++ b/drivers/macintosh/adb-iop.c @@ -137,7 +137,6 @@ static void adb_iop_listen(struct iop_msg *msg) static void adb_iop_start(void) { - unsigned long flags; struct adb_request *req; struct adb_iopmsg amsg; @@ -146,8 +145,6 @@ static void adb_iop_start(void) if (!req) return; - local_irq_save(flags); - /* The IOP takes MacII-style packets, so strip the initial * ADB_PACKET byte. */ @@ -161,7 +158,6 @@ static void adb_iop_start(void) req->sent = 1; adb_iop_state = sending; - local_irq_restore(flags); /* Now send it. The IOP manager will call adb_iop_complete * when the message has been sent. @@ -208,13 +204,13 @@ static int adb_iop_write(struct adb_request *req) return -EINVAL; } - local_irq_save(flags); - req->next = NULL; req->sent = 0; req->complete = 0; req->reply_len = 0; + local_irq_save(flags); + if (current_req != 0) { last_req->next = req; last_req = req; @@ -223,10 +219,11 @@ static int adb_iop_write(struct adb_request *req) last_req = req; } - local_irq_restore(flags); - if (adb_iop_state == idle) adb_iop_start(); + + local_irq_restore(flags); + return 0; } |