The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From c2c928c93173f220955030e8440517b87ec7df92 Mon Sep 17 00:00:00 2001
From: Mark Brown broonie@kernel.org Date: Fri, 21 Jun 2019 12:33:56 +0100 Subject: [PATCH] ASoC: core: Adapt for debugfs API change
Back in ff9fb72bc07705c (debugfs: return error values, not NULL) the debugfs APIs were changed to return error pointers rather than NULL pointers on error, breaking the error checking in ASoC. Update the code to use IS_ERR() and log the codes that are returned as part of the error messages.
Fixes: ff9fb72bc07705c (debugfs: return error values, not NULL) Signed-off-by: Mark Brown broonie@kernel.org Cc: stable@vger.kernel.org Signed-off-by: Mark Brown broonie@kernel.org
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 9138fcb15cd3..6aeba0d66ec5 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -158,9 +158,10 @@ static void soc_init_component_debugfs(struct snd_soc_component *component) component->card->debugfs_card_root); }
- if (!component->debugfs_root) { + if (IS_ERR(component->debugfs_root)) { dev_warn(component->dev, - "ASoC: Failed to create component debugfs directory\n"); + "ASoC: Failed to create component debugfs directory: %ld\n", + PTR_ERR(component->debugfs_root)); return; }
@@ -212,18 +213,21 @@ static void soc_init_card_debugfs(struct snd_soc_card *card)
card->debugfs_card_root = debugfs_create_dir(card->name, snd_soc_debugfs_root); - if (!card->debugfs_card_root) { + if (IS_ERR(card->debugfs_card_root)) { dev_warn(card->dev, - "ASoC: Failed to create card debugfs directory\n"); + "ASoC: Failed to create card debugfs directory: %ld\n", + PTR_ERR(card->debugfs_card_root)); + card->debugfs_card_root = NULL; return; }
card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644, card->debugfs_card_root, &card->pop_time); - if (!card->debugfs_pop_time) + if (IS_ERR(card->debugfs_pop_time)) dev_warn(card->dev, - "ASoC: Failed to create pop time debugfs file\n"); + "ASoC: Failed to create pop time debugfs file: %ld\n", + PTR_ERR(card->debugfs_pop_time)); }
static void soc_cleanup_card_debugfs(struct snd_soc_card *card)