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authorJohannes Berg <johannes@sipsolutions.net>2009-10-29 12:36:02 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2009-12-11 11:24:52 -0800
commit9ebfbd45f9d4ee9cd72529cf99e5f300eb398e67 (patch)
tree6ad661c4b38d0fad8a88c4a0d28997e9303632f2 /drivers/firmware
parent03d673e6af6490371aaf64dfe1f84c658c48b71d (diff)
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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.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/firmware/dell_rbu.c b/drivers/firmware/dell_rbu.c
index b4704e1..b3a0cf5 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