diff options
Diffstat (limited to 'drivers/base/firmware_class.c')
| -rw-r--r-- | drivers/base/firmware_class.c | 35 |
1 files changed, 32 insertions, 3 deletions
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c index 9fd4a853414..b0be1d18fee 100644 --- a/drivers/base/firmware_class.c +++ b/drivers/base/firmware_class.c @@ -49,6 +49,14 @@ struct firmware_priv { struct timer_list timeout; }; +#ifdef CONFIG_FW_LOADER +extern struct builtin_fw __start_builtin_fw[]; +extern struct builtin_fw __end_builtin_fw[]; +#else /* Module case. Avoid ifdefs later; it'll all optimise out */ +static struct builtin_fw *__start_builtin_fw; +static struct builtin_fw *__end_builtin_fw; +#endif + static void fw_load_abort(struct firmware_priv *fw_priv) { @@ -257,7 +265,7 @@ firmware_data_write(struct kobject *kobj, struct bin_attribute *bin_attr, if (retval) goto out; - memcpy(fw->data + offset, buffer, count); + memcpy((u8 *)fw->data + offset, buffer, count); fw->size = max_t(size_t, offset + count, fw->size); retval = count; @@ -391,13 +399,12 @@ _request_firmware(const struct firmware **firmware_p, const char *name, struct device *f_dev; struct firmware_priv *fw_priv; struct firmware *firmware; + struct builtin_fw *builtin; int retval; if (!firmware_p) return -EINVAL; - printk(KERN_INFO "firmware: requesting %s\n", name); - *firmware_p = firmware = kzalloc(sizeof(*firmware), GFP_KERNEL); if (!firmware) { printk(KERN_ERR "%s: kmalloc(struct firmware) failed\n", @@ -406,6 +413,20 @@ _request_firmware(const struct firmware **firmware_p, const char *name, goto out; } + for (builtin = __start_builtin_fw; builtin != __end_builtin_fw; + builtin++) { + if (strcmp(name, builtin->name)) + continue; + printk(KERN_INFO "firmware: using built-in firmware %s\n", + name); + firmware->size = builtin->size; + firmware->data = builtin->data; + return 0; + } + + if (uevent) + printk(KERN_INFO "firmware: requesting %s\n", name); + retval = fw_setup_device(firmware, &f_dev, name, device, uevent); if (retval) goto error_kfree_fw; @@ -473,8 +494,16 @@ request_firmware(const struct firmware **firmware_p, const char *name, void release_firmware(const struct firmware *fw) { + struct builtin_fw *builtin; + if (fw) { + for (builtin = __start_builtin_fw; builtin != __end_builtin_fw; + builtin++) { + if (fw->data == builtin->data) + goto free_fw; + } vfree(fw->data); + free_fw: kfree(fw); } } |