diff options
| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2023-01-19 10:32:10 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-01-31 17:29:21 +0300 |
| commit | dd0b9619a21ef77127e6002f9cb2d254c03ceed1 (patch) | |
| tree | adf1e25b8476d207aed6171d16a8bd827ab63fab /drivers/soundwire/cadence_master.c | |
| parent | 45cb70f99993f74bb46cef72158f59677dbea318 (diff) | |
| download | linux-dd0b9619a21ef77127e6002f9cb2d254c03ceed1.tar.xz | |
soundwire: cadence: use directly bus sdw_defer structure
Copying the bus sdw_defer structure into the Cadence internals leads
to using stale pointers and kernel oopses on errors. It's just simpler
and safer to use the bus sdw_defer structure directly.
Link: https://github.com/thesofproject/linux/issues/4056
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20230119073211.85979-4-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/soundwire/cadence_master.c')
| -rw-r--r-- | drivers/soundwire/cadence_master.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index f44e8f9a1c09..65fcb28c8f58 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -750,7 +750,7 @@ EXPORT_SYMBOL(cdns_xfer_msg); enum sdw_command_response cdns_xfer_msg_defer(struct sdw_bus *bus, - struct sdw_msg *msg, struct sdw_defer *defer) + struct sdw_msg *msg) { struct sdw_cdns *cdns = bus_to_cdns(bus); int cmd = 0, ret; @@ -763,9 +763,6 @@ cdns_xfer_msg_defer(struct sdw_bus *bus, if (ret) return SDW_CMD_FAIL_OTHER; - cdns->defer = defer; - cdns->defer->length = msg->len; - return _cdns_xfer_msg(cdns, msg, cmd, 0, msg->len, true); } EXPORT_SYMBOL(cdns_xfer_msg_defer); @@ -879,13 +876,15 @@ irqreturn_t sdw_cdns_irq(int irq, void *dev_id) return IRQ_NONE; if (int_status & CDNS_MCP_INT_RX_WL) { + struct sdw_bus *bus = &cdns->bus; + struct sdw_defer *defer = &bus->defer_msg; + cdns_read_response(cdns); - if (cdns->defer) { - cdns_fill_msg_resp(cdns, cdns->defer->msg, - cdns->defer->length, 0); - complete(&cdns->defer->complete); - cdns->defer = NULL; + if (defer && defer->msg) { + cdns_fill_msg_resp(cdns, defer->msg, + defer->length, 0); + complete(&defer->complete); } else { complete(&cdns->tx_complete); } |