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ALSA: vxpocket: Fix invalid endian conversions
authorTakashi Iwai <tiwai@suse.de>
Wed, 25 Jul 2018 15:11:38 +0000 (17:11 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 22 Aug 2018 05:48:36 +0000 (07:48 +0200)
commit 3acd3e3bab95ec3622ff98da313290ee823a0f68 upstream.

The endian conversions used in vxp_dma_read() and vxp_dma_write() are
superfluous and even wrong on big-endian machines, as inw() and outw()
already do conversions.  Kill them.

Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
sound/pcmcia/vx/vxp_ops.c

index 56aa1ba..49a8833 100644 (file)
@@ -375,7 +375,7 @@ static void vxp_dma_write(struct vx_core *chip, struct snd_pcm_runtime *runtime,
                length >>= 1; /* in 16bit words */
                /* Transfer using pseudo-dma. */
                for (; length > 0; length--) {
-                       outw(cpu_to_le16(*addr), port);
+                       outw(*addr, port);
                        addr++;
                }
                addr = (unsigned short *)runtime->dma_area;
@@ -385,7 +385,7 @@ static void vxp_dma_write(struct vx_core *chip, struct snd_pcm_runtime *runtime,
        count >>= 1; /* in 16bit words */
        /* Transfer using pseudo-dma. */
        for (; count > 0; count--) {
-               outw(cpu_to_le16(*addr), port);
+               outw(*addr, port);
                addr++;
        }
        vx_release_pseudo_dma(chip);
@@ -417,7 +417,7 @@ static void vxp_dma_read(struct vx_core *chip, struct snd_pcm_runtime *runtime,
                length >>= 1; /* in 16bit words */
                /* Transfer using pseudo-dma. */
                for (; length > 0; length--)
-                       *addr++ = le16_to_cpu(inw(port));
+                       *addr++ = inw(port);
                addr = (unsigned short *)runtime->dma_area;
                pipe->hw_ptr = 0;
        }
@@ -425,12 +425,12 @@ static void vxp_dma_read(struct vx_core *chip, struct snd_pcm_runtime *runtime,
        count >>= 1; /* in 16bit words */
        /* Transfer using pseudo-dma. */
        for (; count > 1; count--)
-               *addr++ = le16_to_cpu(inw(port));
+               *addr++ = inw(port);
        /* Disable DMA */
        pchip->regDIALOG &= ~VXP_DLG_DMAREAD_SEL_MASK;
        vx_outb(chip, DIALOG, pchip->regDIALOG);
        /* Read the last word (16 bits) */
-       *addr = le16_to_cpu(inw(port));
+       *addr = inw(port);
        /* Disable 16-bit accesses */
        pchip->regDIALOG &= ~VXP_DLG_DMA16_SEL_MASK;
        vx_outb(chip, DIALOG, pchip->regDIALOG);