diff options
| author | Johannes Berg <johannes@sipsolutions.net> | 2009-10-29 12:36:02 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-11 11:24:52 -0800 |
| commit | 9ebfbd45f9d4ee9cd72529cf99e5f300eb398e67 (patch) | |
| tree | 6ad661c4b38d0fad8a88c4a0d28997e9303632f2 /drivers/firmware | |
| parent | 03d673e6af6490371aaf64dfe1f84c658c48b71d (diff) | |
| download | lwn-9ebfbd45f9d4ee9cd72529cf99e5f300eb398e67.tar.gz lwn-9ebfbd45f9d4ee9cd72529cf99e5f300eb398e67.zip | |
firmware_class: make request_firmware_nowait more useful
Unfortunately, one cannot hold on to the struct firmware
that request_firmware_nowait() hands off, which is needed
in some cases. Allow this by requiring the callback to
free it (via release_firmware).
Additionally, give it a gfp_t parameter -- all the current
users call it from a GFP_KERNEL context so the GFP_ATOMIC
isn't necessary. This also marks an API break which is
useful in a sense, although that is obviously not the
primary purpose of this change.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Cc: Ming Lei <tom.leiming@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Woodhouse <David.Woodhouse@intel.com>
Cc: Pavel Roskin <proski@gnu.org>
Cc: Abhay Salunke <abhay_salunke@dell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/dell_rbu.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/firmware/dell_rbu.c b/drivers/firmware/dell_rbu.c index b4704e150b28..b3a0cf57442e 100644 --- a/drivers/firmware/dell_rbu.c +++ b/drivers/firmware/dell_rbu.c @@ -544,9 +544,12 @@ static void callbackfn_rbu(const struct firmware *fw, void *context) { rbu_data.entry_created = 0; - if (!fw || !fw->size) + if (!fw) return; + if (!fw->size) + goto out; + spin_lock(&rbu_data.lock); if (!strcmp(image_type, "mono")) { if (!img_update_realloc(fw->size)) @@ -568,6 +571,8 @@ static void callbackfn_rbu(const struct firmware *fw, void *context) } else pr_debug("invalid image type specified.\n"); spin_unlock(&rbu_data.lock); + out: + release_firmware(fw); } static ssize_t read_rbu_image_type(struct kobject *kobj, @@ -615,7 +620,7 @@ static ssize_t write_rbu_image_type(struct kobject *kobj, spin_unlock(&rbu_data.lock); req_firm_rc = request_firmware_nowait(THIS_MODULE, FW_ACTION_NOHOTPLUG, "dell_rbu", - &rbu_device->dev, &context, + &rbu_device->dev, GFP_KERNEL, &context, callbackfn_rbu); if (req_firm_rc) { printk(KERN_ERR |