Re: [PATCH v3 5/5] firmware: fix fw cache to avoid usermode helper on suspend

From	"Luis R. Rodriguez" <mcgrof@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH v3 5/5] firmware: fix fw cache to avoid usermode helper on suspend
Date	2016-09-02 20:20 +0200
Message-ID	<sd1ei-2Tg-27@gated-at.bofh.it> (permalink)
References	<rKOqt-5LX-3@gated-at.bofh.it> <s9uyd-367-5@gated-at.bofh.it> <s9uyd-367-7@gated-at.bofh.it> <sc7OO-7Io-15@gated-at.bofh.it>
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On Wed, Aug 31, 2016 at 09:03:53AM +0200, Daniel Wagner wrote:
> Hi Luis,
> 
> On 08/24/2016 02:45 AM, mcgrof@kernel.org wrote:
> >diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
> >index 22d1760a4278..dca4f9cbf4db 100644
> >--- a/drivers/base/firmware_class.c
> >+++ b/drivers/base/firmware_class.c
> >@@ -1412,7 +1412,7 @@ static int cache_firmware(const char *fw_name)
> >
> > 	pr_debug("%s: %s\n", __func__, fw_name);
> >
> >-	ret = request_firmware(&fw, fw_name, NULL);
> >+	ret = request_firmware_direct(&fw, fw_name, NULL);
> > 	if (!ret)
> > 		kfree(fw);
> >
> >
> 
> While you are at it you should kill this here as well:
> 
> @@ -1622,7 +1637,6 @@ static void __device_uncache_fw_images(void)
>  static void device_cache_fw_images(void)
>  {
>  	struct firmware_cache *fwc = &fw_cache;
> -	int old_timeout;
>  	DEFINE_WAIT(wait);
> 
>  	pr_debug("%s\n", __func__);
> @@ -1630,17 +1644,6 @@ static void device_cache_fw_images(void)
>  	/* cancel uncache work */
>  	cancel_delayed_work_sync(&fwc->work);
> 
> -	/*
> -	 * use small loading timeout for caching devices' firmware
> -	 * because all these firmware images have been loaded
> -	 * successfully at lease once, also system is ready for
> -	 * completing firmware loading now. The maximum size of
> -	 * firmware in current distributions is about 2M bytes,
> -	 * so 10 secs should be enough.
> -	 */
> -	old_timeout = loading_timeout;
> -	loading_timeout = 10;
> -
>  	mutex_lock(&fw_lock);
>  	fwc->state = FW_LOADER_START_CACHE;
>  	dpm_for_each_dev(NULL, dev_cache_fw_image);
> @@ -1648,8 +1651,6 @@ static void device_cache_fw_images(void)
> 
>  	/* wait for completion of caching firmware for all devices */
>  	async_synchronize_full_domain(&fw_cache_domain);
> -
> -	loading_timeout = old_timeout;

You're right, thanks!

  Luis

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Re: [PATCH v3 5/5] firmware: fix fw cache to avoid usermode helper on  suspend Daniel Wagner <wagi@monom.org> - 2016-08-31 09:10 +0200
  Re: [PATCH v3 5/5] firmware: fix fw cache to avoid usermode helper  on suspend "Luis R. Rodriguez" <mcgrof@kernel.org> - 2016-09-02 20:20 +0200

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