diff options
| -rw-r--r-- | drivers/remoteproc/remoteproc_core.c | 26 | ||||
| -rw-r--r-- | include/linux/remoteproc.h | 4 |
2 files changed, 19 insertions, 11 deletions
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index feb24c43d4c7..90b05c72186c 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -886,13 +886,15 @@ static int rproc_fw_boot(struct rproc *rproc, const struct firmware *fw) /* * Create a copy of the resource table. When a virtio device starts * and calls vring_new_virtqueue() the address of the allocated vring - * will be stored in the table_ptr. Before the device is started, - * table_ptr will be copied into device memory. + * will be stored in the cached_table. Before the device is started, + * cached_table will be copied into device memory. */ - rproc->table_ptr = kmemdup(table, tablesz, GFP_KERNEL); - if (!rproc->table_ptr) + rproc->cached_table = kmemdup(table, tablesz, GFP_KERNEL); + if (!rproc->cached_table) goto clean_up; + rproc->table_ptr = rproc->cached_table; + /* reset max_notifyid */ rproc->max_notifyid = -1; @@ -911,16 +913,18 @@ static int rproc_fw_boot(struct rproc *rproc, const struct firmware *fw) } /* - * The starting device has been given the rproc->table_ptr as the + * The starting device has been given the rproc->cached_table as the * resource table. The address of the vring along with the other - * allocated resources (carveouts etc) is stored in table_ptr. + * allocated resources (carveouts etc) is stored in cached_table. * In order to pass this information to the remote device we must copy * this information to device memory. We also update the table_ptr so * that any subsequent changes will be applied to the loaded version. */ loaded_table = rproc_find_loaded_rsc_table(rproc, fw); - if (loaded_table) - memcpy(loaded_table, rproc->table_ptr, tablesz); + if (loaded_table) { + memcpy(loaded_table, rproc->cached_table, tablesz); + rproc->table_ptr = loaded_table; + } /* power up the remote processor */ ret = rproc->ops->start(rproc); @@ -948,7 +952,8 @@ stop_rproc: clean_up_resources: rproc_resource_cleanup(rproc); clean_up: - kfree(rproc->table_ptr); + kfree(rproc->cached_table); + rproc->cached_table = NULL; rproc->table_ptr = NULL; rproc_disable_iommu(rproc); @@ -1182,7 +1187,8 @@ void rproc_shutdown(struct rproc *rproc) rproc_disable_iommu(rproc); /* Free the copy of the resource table */ - kfree(rproc->table_ptr); + kfree(rproc->cached_table); + rproc->cached_table = NULL; rproc->table_ptr = NULL; /* if in crash state, unlock crash handler */ diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h index e2f3a3281d8f..8265d351c9f0 100644 --- a/include/linux/remoteproc.h +++ b/include/linux/remoteproc.h @@ -408,7 +408,8 @@ enum rproc_crash_type { * @crash_comp: completion used to sync crash handler and the rproc reload * @recovery_disabled: flag that state if recovery was disabled * @max_notifyid: largest allocated notify id. - * @table_ptr: our copy of the resource table + * @table_ptr: pointer to the resource table in effect + * @cached_table: copy of the resource table * @has_iommu: flag to indicate if remote processor is behind an MMU */ struct rproc { @@ -440,6 +441,7 @@ struct rproc { bool recovery_disabled; int max_notifyid; struct resource_table *table_ptr; + struct resource_table *cached_table; bool has_iommu; bool auto_boot; }; |