From: Takashi Iwai <tiwai@suse.de>
To: alsa-devel@alsa-project.org
Subject: [alsa-devel] [PATCH 2/3] ALSA: usb-audio: Annotate endianess in Scarlett gen2 quirk
Date: Sat, 1 Feb 2020 09:05:29 +0100 [thread overview]
Message-ID: <20200201080530.22390-2-tiwai@suse.de> (raw)
In-Reply-To: <20200201080530.22390-1-tiwai@suse.de>
The Scarlett gen2 mixer quirk code defines a few record types to
communicate via USB hub, and those must be all little-endian.
This patch changes the field types to LE to annotate endianess
properly. It also fixes the incorrect usage of leXX_to_cpu() in a
couple of places, which was caught by sparse after this change.
Fixes: 9e4d5c1be21f ("ALSA: usb-audio: Scarlett Gen 2 mixer interface")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
sound/usb/mixer_scarlett_gen2.c | 46 ++++++++++++++++++++---------------------
1 file changed, 23 insertions(+), 23 deletions(-)
diff --git a/sound/usb/mixer_scarlett_gen2.c b/sound/usb/mixer_scarlett_gen2.c
index 94b903d95afa..74c00c905d24 100644
--- a/sound/usb/mixer_scarlett_gen2.c
+++ b/sound/usb/mixer_scarlett_gen2.c
@@ -558,11 +558,11 @@ static const struct scarlett2_config
/* proprietary request/response format */
struct scarlett2_usb_packet {
- u32 cmd;
- u16 size;
- u16 seq;
- u32 error;
- u32 pad;
+ __le32 cmd;
+ __le16 size;
+ __le16 seq;
+ __le32 error;
+ __le32 pad;
u8 data[];
};
@@ -664,11 +664,11 @@ static int scarlett2_usb(
"Scarlett Gen 2 USB invalid response; "
"cmd tx/rx %d/%d seq %d/%d size %d/%d "
"error %d pad %d\n",
- le16_to_cpu(req->cmd), le16_to_cpu(resp->cmd),
+ le32_to_cpu(req->cmd), le32_to_cpu(resp->cmd),
le16_to_cpu(req->seq), le16_to_cpu(resp->seq),
resp_size, le16_to_cpu(resp->size),
- le16_to_cpu(resp->error),
- le16_to_cpu(resp->pad));
+ le32_to_cpu(resp->error),
+ le32_to_cpu(resp->pad));
err = -EINVAL;
goto unlock;
}
@@ -687,7 +687,7 @@ static int scarlett2_usb(
/* Send SCARLETT2_USB_DATA_CMD SCARLETT2_USB_CONFIG_SAVE */
static void scarlett2_config_save(struct usb_mixer_interface *mixer)
{
- u32 req = cpu_to_le32(SCARLETT2_USB_CONFIG_SAVE);
+ __le32 req = cpu_to_le32(SCARLETT2_USB_CONFIG_SAVE);
scarlett2_usb(mixer, SCARLETT2_USB_DATA_CMD,
&req, sizeof(u32),
@@ -713,11 +713,11 @@ static int scarlett2_usb_set_config(
const struct scarlett2_config config_item =
scarlett2_config_items[config_item_num];
struct {
- u32 offset;
- u32 bytes;
- s32 value;
+ __le32 offset;
+ __le32 bytes;
+ __le32 value;
} __packed req;
- u32 req2;
+ __le32 req2;
int err;
struct scarlett2_mixer_data *private = mixer->private_data;
@@ -753,8 +753,8 @@ static int scarlett2_usb_get(
int offset, void *buf, int size)
{
struct {
- u32 offset;
- u32 size;
+ __le32 offset;
+ __le32 size;
} __packed req;
req.offset = cpu_to_le32(offset);
@@ -794,8 +794,8 @@ static int scarlett2_usb_set_mix(struct usb_mixer_interface *mixer,
const struct scarlett2_device_info *info = private->info;
struct {
- u16 mix_num;
- u16 data[SCARLETT2_INPUT_MIX_MAX];
+ __le16 mix_num;
+ __le16 data[SCARLETT2_INPUT_MIX_MAX];
} __packed req;
int i, j;
@@ -850,9 +850,9 @@ static int scarlett2_usb_set_mux(struct usb_mixer_interface *mixer)
};
struct {
- u16 pad;
- u16 num;
- u32 data[SCARLETT2_MUX_MAX];
+ __le16 pad;
+ __le16 num;
+ __le32 data[SCARLETT2_MUX_MAX];
} __packed req;
req.pad = 0;
@@ -911,9 +911,9 @@ static int scarlett2_usb_get_meter_levels(struct usb_mixer_interface *mixer,
u16 *levels)
{
struct {
- u16 pad;
- u16 num_meters;
- u32 magic;
+ __le16 pad;
+ __le16 num_meters;
+ __le32 magic;
} __packed req;
u32 resp[SCARLETT2_NUM_METERS];
int i, err;
--
2.16.4
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next prev parent reply other threads:[~2020-02-01 8:07 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-01 8:05 [alsa-devel] [PATCH 1/3] ALSA: usb-audio: Fix endianess in descriptor validation Takashi Iwai
2020-02-01 8:05 ` Takashi Iwai [this message]
2020-02-01 8:05 ` [alsa-devel] [PATCH 3/3] ALSA: dummy: Fix PCM format loop in proc output Takashi Iwai
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