diff options
| author | Finn Thain <fthain@telegraphics.com.au> | 2017-10-27 05:45:24 +0300 |
|---|---|---|
| committer | Geert Uytterhoeven <geert@linux-m68k.org> | 2017-11-10 01:02:57 +0300 |
| commit | 92178fcabbcd39fc9ccd4e58ec4be83dd5323a46 (patch) | |
| tree | e06ac4b6dd750c56f16f8c29e2a58a9eb855da1a /drivers/macintosh/adb-iop.c | |
| parent | 8ee90c5c3fd1af8e68133defb15cfc66c1de3f88 (diff) | |
| download | linux-92178fcabbcd39fc9ccd4e58ec4be83dd5323a46.tar.xz | |
m68k/mac: Add mutual exclusion for IOP interrupt polling
The IOP interrupt handler iop_ism_irq() is used by the adb-iop
driver to poll for ADB request completion. Unfortunately, it is not
re-entrant. Fix the race condition by adding an iop_ism_irq_poll()
function with suitable mutual exclusion.
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Diffstat (limited to 'drivers/macintosh/adb-iop.c')
| -rw-r--r-- | drivers/macintosh/adb-iop.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/macintosh/adb-iop.c b/drivers/macintosh/adb-iop.c index f5f4da3d0b67..4b0ad3995497 100644 --- a/drivers/macintosh/adb-iop.c +++ b/drivers/macintosh/adb-iop.c @@ -29,8 +29,6 @@ /*#define DEBUG_ADB_IOP*/ -extern void iop_ism_irq(int, void *); - static struct adb_request *current_req; static struct adb_request *last_req; #if 0 @@ -265,7 +263,7 @@ int adb_iop_autopoll(int devs) void adb_iop_poll(void) { if (adb_iop_state == idle) adb_iop_start(); - iop_ism_irq(0, (void *) ADB_IOP); + iop_ism_irq_poll(ADB_IOP); } int adb_iop_reset_bus(void) |