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From: Takashi Sakamoto <o-takashi@sakamocchi.jp>
To: tiwai@suse.de
Cc: clemens@ladisch.de, alsa-devel@alsa-project.org, stable@vger.kernel.org
Subject: [PATCH] ALSA: fireworks: fix wrong return count shorter than expected by 4 bytes
Date: Sun, 24 Apr 2022 19:24:28 +0900	[thread overview]
Message-ID: <20220424102428.21109-1-o-takashi@sakamocchi.jp> (raw)

ALSA fireworks driver has a bug in its initial state to return count
shorter than expected by 4 bytes to userspace applications when handling
response frame for Echo Audio Fireworks transaction. It's due to missing
addition of the size for the type of event in ALSA firewire stack.

Fixes: 555e8a8f7f14 ("ALSA: fireworks: Add command/response functionality into hwdep interface")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
---
 sound/firewire/fireworks/fireworks_hwdep.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/firewire/fireworks/fireworks_hwdep.c b/sound/firewire/fireworks/fireworks_hwdep.c
index 626c0c34b0b6..3a53914277d3 100644
--- a/sound/firewire/fireworks/fireworks_hwdep.c
+++ b/sound/firewire/fireworks/fireworks_hwdep.c
@@ -34,6 +34,7 @@ hwdep_read_resp_buf(struct snd_efw *efw, char __user *buf, long remained,
 	type = SNDRV_FIREWIRE_EVENT_EFW_RESPONSE;
 	if (copy_to_user(buf, &type, sizeof(type)))
 		return -EFAULT;
+	count += sizeof(type);
 	remained -= sizeof(type);
 	buf += sizeof(type);
 
-- 
2.34.1


WARNING: multiple messages have this Message-ID
From: Takashi Sakamoto <o-takashi@sakamocchi.jp>
To: tiwai@suse.de
Cc: alsa-devel@alsa-project.org, clemens@ladisch.de, stable@vger.kernel.org
Subject: [PATCH] ALSA: fireworks: fix wrong return count shorter than expected by 4 bytes
Date: Sun, 24 Apr 2022 19:24:28 +0900	[thread overview]
Message-ID: <20220424102428.21109-1-o-takashi@sakamocchi.jp> (raw)

ALSA fireworks driver has a bug in its initial state to return count
shorter than expected by 4 bytes to userspace applications when handling
response frame for Echo Audio Fireworks transaction. It's due to missing
addition of the size for the type of event in ALSA firewire stack.

Fixes: 555e8a8f7f14 ("ALSA: fireworks: Add command/response functionality into hwdep interface")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
---
 sound/firewire/fireworks/fireworks_hwdep.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/firewire/fireworks/fireworks_hwdep.c b/sound/firewire/fireworks/fireworks_hwdep.c
index 626c0c34b0b6..3a53914277d3 100644
--- a/sound/firewire/fireworks/fireworks_hwdep.c
+++ b/sound/firewire/fireworks/fireworks_hwdep.c
@@ -34,6 +34,7 @@ hwdep_read_resp_buf(struct snd_efw *efw, char __user *buf, long remained,
 	type = SNDRV_FIREWIRE_EVENT_EFW_RESPONSE;
 	if (copy_to_user(buf, &type, sizeof(type)))
 		return -EFAULT;
+	count += sizeof(type);
 	remained -= sizeof(type);
 	buf += sizeof(type);
 
-- 
2.34.1


             reply	other threads:[~2022-04-24 10:25 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-24 10:24 Takashi Sakamoto [this message]
2022-04-24 10:24 ` Takashi Sakamoto
2022-04-25  6:04 ` Takashi Iwai
2022-04-25  6:04   ` Takashi Iwai

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