diff options
Diffstat (limited to 'drivers/firmware/arm_scmi')
| -rw-r--r-- | drivers/firmware/arm_scmi/smc.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/firmware/arm_scmi/smc.c b/drivers/firmware/arm_scmi/smc.c index 336168e40f49..6dc8a88cc91b 100644 --- a/drivers/firmware/arm_scmi/smc.c +++ b/drivers/firmware/arm_scmi/smc.c @@ -27,11 +27,10 @@ struct scmi_smc { struct scmi_chan_info *cinfo; struct scmi_shared_mem __iomem *shmem; + struct mutex shmem_lock; u32 func_id; }; -static DEFINE_MUTEX(smc_mutex); - static bool smc_chan_available(struct device *dev, int idx) { return true; @@ -78,6 +77,7 @@ static int smc_chan_setup(struct scmi_chan_info *cinfo, struct device *dev, scmi_info->func_id = func_id; scmi_info->cinfo = cinfo; + mutex_init(&scmi_info->shmem_lock); cinfo->transport_info = scmi_info; return 0; @@ -102,14 +102,14 @@ static int smc_send_message(struct scmi_chan_info *cinfo, struct scmi_smc *scmi_info = cinfo->transport_info; struct arm_smccc_res res; - mutex_lock(&smc_mutex); + mutex_lock(&scmi_info->shmem_lock); shmem_tx_prepare(scmi_info->shmem, xfer); arm_smccc_1_1_invoke(scmi_info->func_id, 0, 0, 0, 0, 0, 0, 0, &res); scmi_rx_callback(scmi_info->cinfo, shmem_read_header(scmi_info->shmem)); - mutex_unlock(&smc_mutex); + mutex_unlock(&scmi_info->shmem_lock); return res.a0; } |