diff options
Diffstat (limited to 'sound/soc/codecs/rt5677-spi.c')
| -rw-r--r-- | sound/soc/codecs/rt5677-spi.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/sound/soc/codecs/rt5677-spi.c b/sound/soc/codecs/rt5677-spi.c index 84b6bd8b50e1..d681488f5312 100644 --- a/sound/soc/codecs/rt5677-spi.c +++ b/sound/soc/codecs/rt5677-spi.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * rt5677-spi.c -- RT5677 ALSA SoC audio codec driver * * Copyright 2013 Realtek Semiconductor Corp. * Author: Oder Chiou <oder_chiou@realtek.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/module.h> @@ -29,6 +26,8 @@ #include "rt5677-spi.h" +#define DRV_NAME "rt5677spi" + #define RT5677_SPI_BURST_LEN 240 #define RT5677_SPI_HEADER 5 #define RT5677_SPI_FREQ 6000000 @@ -101,7 +100,7 @@ static void rt5677_spi_reverse(u8 *dst, u32 dstlen, const u8 *src, u32 srclen) u32 word_size = min_t(u32, dstlen, 8); for (w = 0; w < dstlen; w += word_size) { - for (i = 0; i < word_size; i++) { + for (i = 0; i < word_size && i + w < dstlen; i++) { si = w + word_size - i - 1; dst[w + i] = si < srclen ? src[si] : 0; } @@ -152,8 +151,9 @@ int rt5677_spi_read(u32 addr, void *rxbuf, size_t len) status |= spi_sync(g_spi, &m); mutex_unlock(&spi_mutex); + /* Copy data back to caller buffer */ - rt5677_spi_reverse(cb + offset, t[1].len, body, t[1].len); + rt5677_spi_reverse(cb + offset, len - offset, body, t[1].len); } return status; } @@ -232,7 +232,7 @@ MODULE_DEVICE_TABLE(acpi, rt5677_spi_acpi_id); static struct spi_driver rt5677_spi_driver = { .driver = { - .name = "rt5677", + .name = DRV_NAME, .acpi_match_table = ACPI_PTR(rt5677_spi_acpi_id), }, .probe = rt5677_spi_probe, |