[PATCH 6.6 156/269] ASoc: TAS2781: replace beXX_to_cpup with get_unaligned_beXX for potentially broken alignment

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Shenghao Ding <shenghao-ding@ti.com>

[ Upstream commit 1cc509edbe23b61e8c245611bd15d88edb635a38 ]

Use get_unaligned_be16 instead of be16_to_cpup and get_unaligned_be32
instead of be32_to_cpup for potentially broken alignment.

Signed-off-by: Shenghao Ding <shenghao-ding@ti.com>
Link: https://patch.msgid.link/20240707083011.98-1-shenghao-ding@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/codecs/tas2781-fmwlib.c | 71 +++++++++++++++----------------
 1 file changed, 35 insertions(+), 36 deletions(-)

diff --git a/sound/soc/codecs/tas2781-fmwlib.c b/sound/soc/codecs/tas2781-fmwlib.c
index 41ad82a42916..3639dcd0bbb2 100644
--- a/sound/soc/codecs/tas2781-fmwlib.c
+++ b/sound/soc/codecs/tas2781-fmwlib.c
@@ -21,7 +21,7 @@
 #include <sound/soc.h>
 #include <sound/tlv.h>
 #include <sound/tas2781.h>
-
+#include <asm/unaligned.h>
 
 #define ERROR_PRAM_CRCCHK			0x0000000
 #define ERROR_YRAM_CRCCHK			0x0000001
@@ -125,8 +125,7 @@ static struct tasdevice_config_info *tasdevice_add_config(
 	/* convert data[offset], data[offset + 1], data[offset + 2] and
 	 * data[offset + 3] into host
 	 */
-	cfg_info->nblocks =
-		be32_to_cpup((__be32 *)&config_data[config_offset]);
+	cfg_info->nblocks = get_unaligned_be32(&config_data[config_offset]);
 	config_offset += 4;
 
 	/* Several kinds of dsp/algorithm firmwares can run on tas2781,
@@ -170,14 +169,14 @@ static struct tasdevice_config_info *tasdevice_add_config(
 
 		}
 		bk_da[i]->yram_checksum =
-			be16_to_cpup((__be16 *)&config_data[config_offset]);
+			get_unaligned_be16(&config_data[config_offset]);
 		config_offset += 2;
 		bk_da[i]->block_size =
-			be32_to_cpup((__be32 *)&config_data[config_offset]);
+			get_unaligned_be32(&config_data[config_offset]);
 		config_offset += 4;
 
 		bk_da[i]->n_subblks =
-			be32_to_cpup((__be32 *)&config_data[config_offset]);
+			get_unaligned_be32(&config_data[config_offset]);
 
 		config_offset += 4;
 
@@ -227,7 +226,7 @@ int tasdevice_rca_parser(void *context, const struct firmware *fmw)
 	}
 	buf = (unsigned char *)fmw->data;
 
-	fw_hdr->img_sz = be32_to_cpup((__be32 *)&buf[offset]);
+	fw_hdr->img_sz = get_unaligned_be32(&buf[offset]);
 	offset += 4;
 	if (fw_hdr->img_sz != fmw->size) {
 		dev_err(tas_priv->dev,
@@ -238,9 +237,9 @@ int tasdevice_rca_parser(void *context, const struct firmware *fmw)
 		goto out;
 	}
 
-	fw_hdr->checksum = be32_to_cpup((__be32 *)&buf[offset]);
+	fw_hdr->checksum = get_unaligned_be32(&buf[offset]);
 	offset += 4;
-	fw_hdr->binary_version_num = be32_to_cpup((__be32 *)&buf[offset]);
+	fw_hdr->binary_version_num = get_unaligned_be32(&buf[offset]);
 	if (fw_hdr->binary_version_num < 0x103) {
 		dev_err(tas_priv->dev, "File version 0x%04x is too low",
 			fw_hdr->binary_version_num);
@@ -249,7 +248,7 @@ int tasdevice_rca_parser(void *context, const struct firmware *fmw)
 		goto out;
 	}
 	offset += 4;
-	fw_hdr->drv_fw_version = be32_to_cpup((__be32 *)&buf[offset]);
+	fw_hdr->drv_fw_version = get_unaligned_be32(&buf[offset]);
 	offset += 8;
 	fw_hdr->plat_type = buf[offset];
 	offset += 1;
@@ -277,11 +276,11 @@ int tasdevice_rca_parser(void *context, const struct firmware *fmw)
 	for (i = 0; i < TASDEVICE_DEVICE_SUM; i++, offset++)
 		fw_hdr->devs[i] = buf[offset];
 
-	fw_hdr->nconfig = be32_to_cpup((__be32 *)&buf[offset]);
+	fw_hdr->nconfig = get_unaligned_be32(&buf[offset]);
 	offset += 4;
 
 	for (i = 0; i < TASDEVICE_CONFIG_SUM; i++) {
-		fw_hdr->config_size[i] = be32_to_cpup((__be32 *)&buf[offset]);
+		fw_hdr->config_size[i] = get_unaligned_be32(&buf[offset]);
 		offset += 4;
 		total_config_sz += fw_hdr->config_size[i];
 	}
@@ -330,7 +329,7 @@ static int fw_parse_block_data_kernel(struct tasdevice_fw *tas_fmw,
 	/* convert data[offset], data[offset + 1], data[offset + 2] and
 	 * data[offset + 3] into host
 	 */
-	block->type = be32_to_cpup((__be32 *)&data[offset]);
+	block->type = get_unaligned_be32(&data[offset]);
 	offset += 4;
 
 	block->is_pchksum_present = data[offset];
@@ -345,10 +344,10 @@ static int fw_parse_block_data_kernel(struct tasdevice_fw *tas_fmw,
 	block->ychksum = data[offset];
 	offset++;
 
-	block->blk_size = be32_to_cpup((__be32 *)&data[offset]);
+	block->blk_size = get_unaligned_be32(&data[offset]);
 	offset += 4;
 
-	block->nr_subblocks = be32_to_cpup((__be32 *)&data[offset]);
+	block->nr_subblocks = get_unaligned_be32(&data[offset]);
 	offset += 4;
 
 	if (offset + block->blk_size > fmw->size) {
@@ -381,7 +380,7 @@ static int fw_parse_data_kernel(struct tasdevice_fw *tas_fmw,
 		offset = -EINVAL;
 		goto out;
 	}
-	img_data->nr_blk = be32_to_cpup((__be32 *)&data[offset]);
+	img_data->nr_blk = get_unaligned_be32(&data[offset]);
 	offset += 4;
 
 	img_data->dev_blks = kcalloc(img_data->nr_blk,
@@ -477,14 +476,14 @@ static int fw_parse_variable_header_kernel(
 		offset = -EINVAL;
 		goto out;
 	}
-	fw_hdr->device_family = be16_to_cpup((__be16 *)&buf[offset]);
+	fw_hdr->device_family = get_unaligned_be16(&buf[offset]);
 	if (fw_hdr->device_family != 0) {
 		dev_err(tas_priv->dev, "%s:not TAS device\n", __func__);
 		offset = -EINVAL;
 		goto out;
 	}
 	offset += 2;
-	fw_hdr->device = be16_to_cpup((__be16 *)&buf[offset]);
+	fw_hdr->device = get_unaligned_be16(&buf[offset]);
 	if (fw_hdr->device >= TASDEVICE_DSP_TAS_MAX_DEVICE ||
 		fw_hdr->device == 6) {
 		dev_err(tas_priv->dev, "Unsupported dev %d\n", fw_hdr->device);
@@ -502,7 +501,7 @@ static int fw_parse_variable_header_kernel(
 		goto out;
 	}
 
-	tas_fmw->nr_programs = be32_to_cpup((__be32 *)&buf[offset]);
+	tas_fmw->nr_programs = get_unaligned_be32(&buf[offset]);
 	offset += 4;
 
 	if (tas_fmw->nr_programs == 0 || tas_fmw->nr_programs >
@@ -521,14 +520,14 @@ static int fw_parse_variable_header_kernel(
 
 	for (i = 0; i < tas_fmw->nr_programs; i++) {
 		program = &(tas_fmw->programs[i]);
-		program->prog_size = be32_to_cpup((__be32 *)&buf[offset]);
+		program->prog_size = get_unaligned_be32(&buf[offset]);
 		offset += 4;
 	}
 
 	/* Skip the unused prog_size */
 	offset += 4 * (TASDEVICE_MAXPROGRAM_NUM_KERNEL - tas_fmw->nr_programs);
 
-	tas_fmw->nr_configurations = be32_to_cpup((__be32 *)&buf[offset]);
+	tas_fmw->nr_configurations = get_unaligned_be32(&buf[offset]);
 	offset += 4;
 
 	/* The max number of config in firmware greater than 4 pieces of
@@ -560,7 +559,7 @@ static int fw_parse_variable_header_kernel(
 
 	for (i = 0; i < tas_fmw->nr_programs; i++) {
 		config = &(tas_fmw->configs[i]);
-		config->cfg_size = be32_to_cpup((__be32 *)&buf[offset]);
+		config->cfg_size = get_unaligned_be32(&buf[offset]);
 		offset += 4;
 	}
 
@@ -598,7 +597,7 @@ static int tasdevice_process_block(void *context, unsigned char *data,
 		switch (subblk_typ) {
 		case TASDEVICE_CMD_SING_W: {
 			int i;
-			unsigned short len = be16_to_cpup((__be16 *)&data[2]);
+			unsigned short len = get_unaligned_be16(&data[2]);
 
 			subblk_offset += 2;
 			if (subblk_offset + 4 * len > sublocksize) {
@@ -624,7 +623,7 @@ static int tasdevice_process_block(void *context, unsigned char *data,
 		}
 			break;
 		case TASDEVICE_CMD_BURST: {
-			unsigned short len = be16_to_cpup((__be16 *)&data[2]);
+			unsigned short len = get_unaligned_be16(&data[2]);
 
 			subblk_offset += 2;
 			if (subblk_offset + 4 + len > sublocksize) {
@@ -665,7 +664,7 @@ static int tasdevice_process_block(void *context, unsigned char *data,
 				is_err = true;
 				break;
 			}
-			sleep_time = be16_to_cpup((__be16 *)&data[2]) * 1000;
+			sleep_time = get_unaligned_be16(&data[2]) * 1000;
 			usleep_range(sleep_time, sleep_time + 50);
 			subblk_offset += 2;
 		}
@@ -940,7 +939,7 @@ static int fw_parse_variable_hdr(struct tasdevice_priv
 
 	offset += len;
 
-	fw_hdr->device_family = be32_to_cpup((__be32 *)&buf[offset]);
+	fw_hdr->device_family = get_unaligned_be32(&buf[offset]);
 	if (fw_hdr->device_family != 0) {
 		dev_err(tas_priv->dev, "%s: not TAS device\n", __func__);
 		offset = -EINVAL;
@@ -948,7 +947,7 @@ static int fw_parse_variable_hdr(struct tasdevice_priv
 	}
 	offset += 4;
 
-	fw_hdr->device = be32_to_cpup((__be32 *)&buf[offset]);
+	fw_hdr->device = get_unaligned_be32(&buf[offset]);
 	if (fw_hdr->device >= TASDEVICE_DSP_TAS_MAX_DEVICE ||
 		fw_hdr->device == 6) {
 		dev_err(tas_priv->dev, "Unsupported dev %d\n", fw_hdr->device);
@@ -993,7 +992,7 @@ static int fw_parse_block_data(struct tasdevice_fw *tas_fmw,
 		offset = -EINVAL;
 		goto out;
 	}
-	block->type = be32_to_cpup((__be32 *)&data[offset]);
+	block->type = get_unaligned_be32(&data[offset]);
 	offset += 4;
 
 	if (tas_fmw->fw_hdr.fixed_hdr.drv_ver >= PPC_DRIVER_CRCCHK) {
@@ -1018,7 +1017,7 @@ static int fw_parse_block_data(struct tasdevice_fw *tas_fmw,
 		block->is_ychksum_present = 0;
 	}
 
-	block->nr_cmds = be32_to_cpup((__be32 *)&data[offset]);
+	block->nr_cmds = get_unaligned_be32(&data[offset]);
 	offset += 4;
 
 	n = block->nr_cmds * 4;
@@ -1069,7 +1068,7 @@ static int fw_parse_data(struct tasdevice_fw *tas_fmw,
 		goto out;
 	}
 	offset += n;
-	img_data->nr_blk = be16_to_cpup((__be16 *)&data[offset]);
+	img_data->nr_blk = get_unaligned_be16(&data[offset]);
 	offset += 2;
 
 	img_data->dev_blks = kcalloc(img_data->nr_blk,
@@ -1106,7 +1105,7 @@ static int fw_parse_program_data(struct tasdevice_priv *tas_priv,
 		offset = -EINVAL;
 		goto out;
 	}
-	tas_fmw->nr_programs = be16_to_cpup((__be16 *)&buf[offset]);
+	tas_fmw->nr_programs = get_unaligned_be16(&buf[offset]);
 	offset += 2;
 
 	if (tas_fmw->nr_programs == 0) {
@@ -1173,7 +1172,7 @@ static int fw_parse_configuration_data(
 		offset = -EINVAL;
 		goto out;
 	}
-	tas_fmw->nr_configurations = be16_to_cpup((__be16 *)&data[offset]);
+	tas_fmw->nr_configurations = get_unaligned_be16(&data[offset]);
 	offset += 2;
 
 	if (tas_fmw->nr_configurations == 0) {
@@ -1805,7 +1804,7 @@ static int fw_parse_header(struct tasdevice_priv *tas_priv,
 	/* Convert data[offset], data[offset + 1], data[offset + 2] and
 	 * data[offset + 3] into host
 	 */
-	fw_fixed_hdr->fwsize = be32_to_cpup((__be32 *)&buf[offset]);
+	fw_fixed_hdr->fwsize = get_unaligned_be32(&buf[offset]);
 	offset += 4;
 	if (fw_fixed_hdr->fwsize != fmw->size) {
 		dev_err(tas_priv->dev, "File size not match, %lu %u",
@@ -1814,9 +1813,9 @@ static int fw_parse_header(struct tasdevice_priv *tas_priv,
 		goto out;
 	}
 	offset += 4;
-	fw_fixed_hdr->ppcver = be32_to_cpup((__be32 *)&buf[offset]);
+	fw_fixed_hdr->ppcver = get_unaligned_be32(&buf[offset]);
 	offset += 8;
-	fw_fixed_hdr->drv_ver = be32_to_cpup((__be32 *)&buf[offset]);
+	fw_fixed_hdr->drv_ver = get_unaligned_be32(&buf[offset]);
 	offset += 72;
 
  out:
@@ -1858,7 +1857,7 @@ static int fw_parse_calibration_data(struct tasdevice_priv *tas_priv,
 		offset = -EINVAL;
 		goto out;
 	}
-	tas_fmw->nr_calibrations = be16_to_cpup((__be16 *)&data[offset]);
+	tas_fmw->nr_calibrations = get_unaligned_be16(&data[offset]);
 	offset += 2;
 
 	if (tas_fmw->nr_calibrations != 1) {
-- 
2.43.0