From 8b4aec9ac7b59754df9c594569af9ae8f456ee07 Mon Sep 17 00:00:00 2001 From: Robert Tivy Date: Thu, 28 Mar 2013 18:41:44 -0700 Subject: [PATCH] remoteproc: support default firmware name in rproc_alloc() If rproc_alloc isn't given a firmware name, look for a default one using the "rproc-%s-fw" template. Signed-off-by: Robert Tivy [add commit log, document change, use snprintf, minor style change] Signed-off-by: Ohad Ben-Cohen --- drivers/remoteproc/remoteproc_core.c | 28 ++++++++++++++++++++++++---- 1 file changed, 24 insertions(+), 4 deletions(-) diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index 7c35737..56a0f8d 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -1236,11 +1236,11 @@ static struct device_type rproc_type = { * @dev: the underlying device * @name: name of this remote processor * @ops: platform-specific handlers (mainly start/stop) - * @firmware: name of firmware file to load + * @firmware: name of firmware file to load, can be NULL * @len: length of private data needed by the rproc driver (in bytes) * * Allocates a new remote processor handle, but does not register - * it yet. + * it yet. if @firmware is NULL, a default name is used. * * This function should be used by rproc implementations during initialization * of the remote processor. @@ -1259,19 +1259,39 @@ struct rproc *rproc_alloc(struct device *dev, const char *name, const char *firmware, int len) { struct rproc *rproc; + char *p, *template = "rproc-%s-fw"; + int name_len = 0; if (!dev || !name || !ops) return NULL; - rproc = kzalloc(sizeof(struct rproc) + len, GFP_KERNEL); + if (!firmware) + /* + * Make room for default firmware name (minus %s plus '\0'). + * If the caller didn't pass in a firmware name then + * construct a default name. We're already glomming 'len' + * bytes onto the end of the struct rproc allocation, so do + * a few more for the default firmware name (but only if + * the caller doesn't pass one). + */ + name_len = strlen(name) + strlen(template) - 2 + 1; + + rproc = kzalloc(sizeof(struct rproc) + len + name_len, GFP_KERNEL); if (!rproc) { dev_err(dev, "%s: kzalloc failed\n", __func__); return NULL; } + if (!firmware) { + p = (char *)rproc + sizeof(struct rproc) + len; + snprintf(p, name_len, template, name); + } else { + p = (char *)firmware; + } + + rproc->firmware = p; rproc->name = name; rproc->ops = ops; - rproc->firmware = firmware; rproc->priv = &rproc[1]; device_initialize(&rproc->dev); -- 2.7.4