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authorPaolo Bonzini2019-07-11 15:14:16 +0200
committerPaolo Bonzini2019-07-11 15:14:16 +0200
commita45ff5994c9cde41af627c46abb9f32beae68943 (patch)
treeb726cc506ed1b01484f183ab2679cdd618e1e9b1 /sound/soc/codecs/rt5677-spi.c
parentDocumentation: virtual: Add toctree hooks (diff)
parentKVM: arm/arm64: Initialise host's MPIDRs by reading the actual register (diff)
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Merge tag 'kvm-arm-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm updates for 5.3 - Add support for chained PMU counters in guests - Improve SError handling - Handle Neoverse N1 erratum #1349291 - Allow side-channel mitigation status to be migrated - Standardise most AArch64 system register accesses to msr_s/mrs_s - Fix host MPIDR corruption on 32bit
Diffstat (limited to 'sound/soc/codecs/rt5677-spi.c')
-rw-r--r--sound/soc/codecs/rt5677-spi.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/sound/soc/codecs/rt5677-spi.c b/sound/soc/codecs/rt5677-spi.c
index 84b6bd8b50e1..d1694b7e1655 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>
@@ -101,7 +98,7 @@ 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 +149,9 @@ 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;
}