[ALSA] sparc dbri removal of DBRI_NO_INTS

This patch removes define DBR_NO_INTS and all code related to
handling more than one dbri irq statuses block.
Signed-off-by: NKrzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

sound/sparc/dbri.c

@@ -238,12 +238,6 @@ static struct {
 #define REG9	0x24UL		/* Interrupt Queue Pointer */
 
 #define DBRI_NO_CMDS	64
-#define DBRI_NO_INTS	1	/* Note: the value of this define was
-				 * originally 2.  The ringbuffer to store
-				 * interrupts in dma is currently broken.
-				 * This is a temporary fix until the ringbuffer
-				 * is fixed.
-				 */
 #define DBRI_INT_BLK	64
 #define DBRI_NO_DESCS	64
 #define DBRI_NO_PIPES	32
@@ -268,7 +262,7 @@ struct dbri_mem {
  */
 struct dbri_dma {
 	volatile s32 cmd[DBRI_NO_CMDS];	/* Place for commands       */
-	volatile s32 intr[DBRI_NO_INTS * DBRI_INT_BLK];	/* Interrupt field  */
+	volatile s32 intr[DBRI_INT_BLK];	/* Interrupt field  */
 	struct dbri_mem desc[DBRI_NO_DESCS];	/* Xmit/receive descriptors */
 };
 
@@ -741,18 +735,6 @@ static void dbri_initialize(struct snd_dbri * dbri)
 	dprintk(D_GEN, "init: cmd: %p, int: %p\n",
 		&dbri->dma->cmd[0], &dbri->dma->intr[0]);
 
-	/*
-	 * Initialize the interrupt ringbuffer.
-	 */
-	for (n = 0; n < DBRI_NO_INTS - 1; n++) {
-		dma_addr = dbri->dma_dvma;
-		dma_addr += dbri_dma_off(intr, ((n + 1) * DBRI_INT_BLK));
-		dbri->dma->intr[n * DBRI_INT_BLK] = dma_addr;
-	}
-	dma_addr = dbri->dma_dvma + dbri_dma_off(intr, 0);
-	dbri->dma->intr[n * DBRI_INT_BLK] = dma_addr;
-	dbri->dbri_irqp = 1;
-
 	/* Initialize pipes */
 	for (n = 0; n < DBRI_NO_PIPES; n++)
 		dbri->pipes[n].desc = dbri->pipes[n].first_desc = -1;
@@ -765,9 +747,14 @@ static void dbri_initialize(struct snd_dbri * dbri)
 	sbus_writel(tmp, dbri->regs + REG0);
 
 	/*
-	 * Set up the interrupt queue
+	 * Initialize the interrupt ringbuffer.
 	 */
 	dma_addr = dbri->dma_dvma + dbri_dma_off(intr, 0);
+	dbri->dma->intr[0] = dma_addr;
+	dbri->dbri_irqp = 1;
+	/*
+	 * Set up the interrupt queue
+	 */
 	*(cmd++) = DBRI_CMD(D_IIQ, 0, 0);
 	*(cmd++) = dma_addr;
 
@@ -1951,10 +1938,8 @@ static void dbri_process_interrupt_buffer(struct snd_dbri * dbri)
 	while ((x = dbri->dma->intr[dbri->dbri_irqp]) != 0) {
 		dbri->dma->intr[dbri->dbri_irqp] = 0;
 		dbri->dbri_irqp++;
-		if (dbri->dbri_irqp == (DBRI_NO_INTS * DBRI_INT_BLK))
+		if (dbri->dbri_irqp == DBRI_INT_BLK)
 			dbri->dbri_irqp = 1;
-		else if ((dbri->dbri_irqp & (DBRI_INT_BLK - 1)) == 0)
-			dbri->dbri_irqp++;
 
 		dbri_process_one_interrupt(dbri, x);
 	}