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Subject[PATCH v3 1/3] soundwire: qcom: clear BIT FIELDs before value set.
Date
According to usage (bitfields.h) of REG_FIELDS,
Modify is:
reg &= ~REG_FIELD_C;
reg |= FIELD_PREP(REG_FIELD_C, c);

Patch ("soundwire: qcom : use FIELD_{GET|PREP}") seems to have
accidentally removed clearing bit field while modifying the register.

Fix this by using u32_replace_bits() to clear and set the values.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
drivers/soundwire/qcom.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index d7aabdaffee3..0036d3248fb4 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -311,7 +311,7 @@ static int qcom_swrm_init(struct qcom_swrm_ctrl *ctrl)

/* Configure No pings */
ctrl->reg_read(ctrl, SWRM_MCP_CFG_ADDR, &val);
- val |= FIELD_PREP(SWRM_MCP_CFG_MAX_NUM_OF_CMD_NO_PINGS_BMSK, SWRM_DEF_CMD_NO_PINGS);
+ val = u32_replace_bits(val, SWRM_DEF_CMD_NO_PINGS, SWRM_MCP_CFG_MAX_NUM_OF_CMD_NO_PINGS_BMSK);
ctrl->reg_write(ctrl, SWRM_MCP_CFG_ADDR, val);

/* Configure number of retries of a read/write cmd */
@@ -372,8 +372,8 @@ static int qcom_swrm_pre_bank_switch(struct sdw_bus *bus)

ctrl->reg_read(ctrl, reg, &val);

- val |= FIELD_PREP(SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_BMSK, SWRM_MAX_COL_VAL);
- val |= FIELD_PREP(SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_BMSK, SWRM_MAX_ROW_VAL);
+ val = u32_replace_bits(val, SWRM_MAX_COL_VAL, SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_BMSK);
+ val = u32_replace_bits(val, SWRM_MAX_ROW_VAL, SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_BMSK);

return ctrl->reg_write(ctrl, reg, val);
}
--
2.21.0
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