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hc
2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 
 kernel/include/linux/usb/audio-v2.h
....@@ -153,7 +153,7 @@
153153 	__u8 bSourceID;
154154 	/* bmaControls is actually u32,
155155 	 * but u8 is needed for the hybrid parser */
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-	__u8 bmaControls[0]; /* variable length */
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+	__u8 bmaControls[]; /* variable length */
157157 } __attribute__((packed));
158158 
159159 #define UAC2_DT_FEATURE_UNIT_SIZE(ch)		(6 + ((ch) + 1) * 4)
....@@ -168,7 +168,19 @@
168168 	__u8  bSourceID;					\
169169 	__le32 bmaControls[ch + 1];				\
170170 	__u8  iFeature;						\
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-} __attribute__((packed))
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+} __packed
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+
173
+/* 4.7.2.10 Effect Unit Descriptor */
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+
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+struct uac2_effect_unit_descriptor {
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+	__u8 bLength;
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+	__u8 bDescriptorType;
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+	__u8 bDescriptorSubtype;
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+	__u8 bUnitID;
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+	__le16 wEffectType;
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+	__u8 bSourceID;
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+	__u8 bmaControls[]; /* variable length */
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+} __attribute__((packed));
172184 
173185 /* 4.9.2 Class-Specific AS Interface Descriptor */
174186 
....@@ -332,9 +344,6 @@
332344 #define UAC2_FU_UNDERFLOW		0x0e
333345 #define UAC2_FU_OVERFLOW		0x0f
334346 #define UAC2_FU_LATENCY			0x10
335
-
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-#define UAC2_CONTROL_BIT_RO(CS)		(0x01 << (((CS) - 1) << 1))
337
-#define UAC2_CONTROL_BIT_RW(CS)		(0x03 << (((CS) - 1) << 1))
338347 
339348 /* A.17.8.1 Parametric Equalizer Section Effect Unit Control Selectors */
340349 #define UAC2_PE_UNDEFINED		0x00