Hi Mathieu,
On 3/24/20 4:45 PM, Mathieu Poirier wrote:
> Make the rproc_ops allocation a function on its own in order to
> introduce more flexibility to function rproc_alloc().
>
> Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
> ---
> drivers/remoteproc/remoteproc_core.c | 45 ++++++++++++++++++----------
> 1 file changed, 30 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
> index c0871f69929b..d22e557f27ed 100644
> --- a/drivers/remoteproc/remoteproc_core.c
> +++ b/drivers/remoteproc/remoteproc_core.c
> @@ -1992,6 +1992,32 @@ static int rproc_alloc_firmware(struct rproc *rproc,
> return 0;
> }
>
> +static int rproc_alloc_ops(struct rproc *rproc, const struct rproc_ops *ops)
> +{
> + if (!rproc)
> + return -EINVAL;
This is an internal function, and this check is already performed in
rproc_alloc(), so you can drop this.
> +
> + /* Nothing to do if there isn't and ops to work with */
> + if (!ops)
> + return 0;
Hmm, ops at the moment is mandatory, and is one of the first checks done
in rproc_alloc(). So, do drop the concept of optional ops from this
patch. It needs to be moved to a later patch that makes it optional.
> +
> + rproc->ops = kmemdup(ops, sizeof(*ops), GFP_KERNEL);
> + if (!rproc->ops)
> + return -ENOMEM;
> +
> + /* Default to ELF loader if no load function is specified */
> + if (!rproc->ops->load) {
> + rproc->ops->load = rproc_elf_load_segments;
> + rproc->ops->parse_fw = rproc_elf_load_rsc_table;
> + rproc->ops->find_loaded_rsc_table =
> + rproc_elf_find_loaded_rsc_table;
> + rproc->ops->sanity_check = rproc_elf_sanity_check;
I understand you have done this patch on the latest -rc, but this hunk
has been modified on rproc-next as part of Clement's 64-bit loader
support, and there is one more patch from him that's changing stuff here
again.
regards
Suman
> + rproc->ops->get_boot_addr = rproc_elf_get_boot_addr;
> + }
> +
> + return 0;
> +}
> +
> /**
> * rproc_alloc() - allocate a remote processor handle
> * @dev: the underlying device
> @@ -2031,12 +2057,8 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
> if (rproc_alloc_firmware(rproc, name, firmware))
> goto free_rproc;
>
> - rproc->ops = kmemdup(ops, sizeof(*ops), GFP_KERNEL);
> - if (!rproc->ops) {
> - kfree(rproc->firmware);
> - kfree(rproc);
> - return NULL;
> - }
> + if (rproc_alloc_ops(rproc, ops))
> + goto free_firmware;
>
> rproc->name = name;
> rproc->priv = &rproc[1];
> @@ -2060,15 +2082,6 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
>
> atomic_set(&rproc->power, 0);
>
> - /* Default to ELF loader if no load function is specified */
> - if (!rproc->ops->load) {
> - rproc->ops->load = rproc_elf_load_segments;
> - rproc->ops->parse_fw = rproc_elf_load_rsc_table;
> - rproc->ops->find_loaded_rsc_table = rproc_elf_find_loaded_rsc_table;
> - rproc->ops->sanity_check = rproc_elf_sanity_check;
> - rproc->ops->get_boot_addr = rproc_elf_get_boot_addr;
> - }
> -
> mutex_init(&rproc->lock);
>
> idr_init(&rproc->notifyids);
> @@ -2086,6 +2099,8 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
>
> return rproc;
>
> +free_firmware:
> + kfree(rproc->firmware);
> free_rproc:
> kfree(rproc);
> return NULL;
>
